The Scientific Sections*

832

The Journal of the American Dental Association

To the Seventh International Dental gress, Greetings:

Con­

It is the desire o f America in general, and o f the 35,000 members o f the American Den­ tal Association in particular, to greet all o f the foreign visitors w ho w ill meet in Phila­ delphia, Pennsylvania, August 23 to 27, 1926, to attend the Seventh International Dental Congress. It is the hope o f America that the attendance w ill be great. The officers and committees o f the Am eri­ can Dental Association are cooperating with the committees o f the Congress to make this the greatest dental convention and the most important to humanity during its history. What other time could be more propitious fo r such a Congress? W e wish to call attention to some o f the features o f the Congress to which the Am er­ ican Dental Association is directly contribut­ ing. On Friday, August 27, the Congress will be given over to the clinics, at which time

there w ill be staged a w onderful exhibition conducted by men o f outstanding prominence in the various branches o f the profession. T h e entire auditorium w ill be cleared o f seats and w ill be divided into spaces, where every phase o f American dentistry w ill be demon­ strated. T he American Dental Association is planning a reception fo r the members o f the Congress. A luncheon w ill be tendered the women visiting the Congress, at which the w ife o f the President o f the American Dental Asso­ ciation w ill act as hostess. T he House o f Delegates o f the American Dental Association w ill hold its first meeting on Saturday, August 21, immediately previous to the opening o f the Congress, and w ill meet also on the f o llo w '-’ g M onday and T uesday. America lv c i. the dentists ' the w orld to Philadelphia. Sheppard ' j. F o ste r , Presto? •*, Americai. Dental Associa, i.

THE SCIENTIFIC SECTIONS* S E C T I O N Is A N A T O M Y , P H Y S I ­ O L O G Y , M A T E R IA M E D IC A A N D T H E R A P E U T IC S O FFICERS OF SECTION

President: Thomas P. Hinman___________ Atlanta, Ga. H onorary Presidents: D r. A. Blatter ________________Paris, France Dr. J. H oward Mummery --------------------__________________________ London, England D r. Louis Quintin______ Brussels, Belgium D r. Juan Carol _____________ M adrid, Spain D r. J. Vichot _________________ Paris, France D r. Tsurukichi Okumura----- T ok y o, Japan P rof. Dr. Hermann Euler--------------------__________________________ Breslau, Germany P ro f. W . Lepkowski______ Krakow, Poland D r. Kazuo Sato _____________ T ok y o, Japan D r. M aria L. R o jo -----------------------M exico Dr. Federico Eyer._.----- ----------- Brazil, S. A. A. Hopewell-Smith_______Philadelphia, Pa. John P. Buckley ______Los Angeles, Calif. Hermann Prinz ____________Lansdowne, Pa. •The time allowed for presentation of a paper, including showing of slides, before a section will be limited to from fifteen to twenty minutes. Discussioni will be limited to flv& minute*.

V ice-Prtfsidents: F red erick B. N oyes __________ C h ica g o, 111. I. N orm a n B ro o m e ll ____ Philadelphia, Pa. G. A . Crise -----------------------M anhattan, K an.

Secretaries: W illia m H opkinson ______M ilw a u k ee, W is. E d ga r D . C o o lid g e ___________ C h ica g o, 111. FOREW ORD

“ Ignoran ce is the curse o f G o d ; K n o w l­ edge, the w in gs by w hich w e fly to H ea ven .” T h e hearty cooperation and splendid as­ sistance we have received in p rep arin g our p ro g ra m , n ot o n ly fr o m the members o f our p rofession in this cou n try but also fr o m o u r colleagues abroad is indeed g r a tify in g to the officers o f this Section. T h e usual response fr o m those o f other nations has m ade ou r p ro g ra m an outstanding on e, and w e wish, at this tim e, to extend to them ou r p r o fo u n d gratitude. T h e progress m ade in that part o f o u r p rofession al w o r k w h ich is to be cov ered in this section w ill be show n by the papers presented. T h e departm ent o f ther­ apeutics has concentrated its efforts on the great p rob lem n o w fa c in g the p rofession , i.e., the treatment o f the pulpless tooth . W e fe e l

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The Philadelphia Session

sure that there has never, in the history of the profession, been such a contribution of papers on this subject by authorities so eminent. We are fortunate also in having some excellent papers presented on anatomy, physiology and materia medica. T o the entire program, the officers of the Section point with pride. Every paper is o f a type that will compel attention. Again we wish to thank those at home who have so splendidly cooperated, and to those abroad we send a greeting, a welcome and an expression of deep appreciation of their loy­ alty to our profession. T h o m a s P. H i n m a n . M O N D A Y , A U G U S T 23

10 a. m. to 12 m. President’s Address “ Functional Formation o f the Jaws” By Dr. Otto Loos ________________ ______ Frankfort-on-the-Main, Germany “ The Structures of the Mouth and Their De­ velopment as Factors Predisposing to Malformations, Focal Infection and Devel­ opment of Tumors” By Philipp Fischelis___Philadelphia, Pa. Discussed by F. C. Waite _________ Cleveland, Ohio F. B. Noyes __________ __ Chicago, 111. 2 to S p. m. “ Oral Surgical Anatomy” By S. L. Silverman______ Atlanta, Ga. Discussed by T . P. Hinman____________Atlanta, Ga. C. J. Lyons________ Ann Arbor, Mich. “ Anatomy of Root Canals” By Dr. Tsurukichi Okumura----------______________ _________ Tokyo, Japan “ Anatomic Variation o f the Human Jaw Bones” By Milo Heilman______ New York City Discussed by T. W. Todd_________Cleveland, Ohio “ The Innervation of the Human Dentin” (Research from the scientific laboratories o f Prof. Dr. Wilhelm Dieck) By Dr. Tojoda_______Berlin, Germany

T U E S D A Y , A U G U S T 24 9 a. m. to 12 m. “ The Inderdental Canals” By I. H irschfeld________ New York City Discussed by Robert H. Ivy________ Philadelphia, Pa. Adolph Berger__________New Y ork City “ A H istologic Report on Pathologic Dental Tissues o f Artificial Caries Produced by Diet” By John A . Marshall_________ ______ _ ---------------------------- „San Francisco, Calif. “ Anatom y o f the Gasserion G anglion” (Illustrated with microscopic sections) By T . P. Hinman and P. A . Stegall..-. ------- ----- -------------------------------Atlanta, Ga. 2 to 5 p. m. “ T h e Development o f the Dental Groove” By Dr. Walter Adrion Berlin, Germany “ Physiology o f the Ton gu e” By Dr. J. M eyer___________ Paris, France “ Residual M outh Odors” By Harvey Stallard ..San D iego, Calif. Discussed by Russell W . Bunting ...Ann Arbor, M ich. H. C. Ferris ____________ New Y ork City “ Nutrition and Teeth” By D r. B. Orban_______ Vienna, Austria “ Studies Concerning the Saliva” By D r. Knoche________Munich, Germany W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ T he Principles o f B iologic Therapy and Measures fo r Increasing the Span o f Hu­ man L ife in the A dult” By John P. Buckley._Los Angeles, C alif. Discussed by T . B. Hartzeil_______Minneapolis, Minn. M . L. Rhein____________ New Y ork City “ Therapeutic Control o f Saliva” By D r. R. Weise________ Berlin, Germany “ T he Relation o f i!'.e Dentinocemental Junc­ tion to Pulp Canal Therapy” By John A . M arshall________________ ______________________ San Francisco, Calif. Discussed by A . Hopewell-Smith___Philadelphia, Pa. John P. B u ck ley..... Los Angeles, C alif.

The Journal of the American Dental Association

834

“ Linguocellulitis o f Dental O rigin : Its Treat­ ment by Vaccines” By D r. Dona Josefina Landete_______ ___ ___________ ___ _________ M adrid, Spain 2 to 5 p. m. “ Fundamentals Essential to Successful Root Canal Therapeutics” By U. G. Rickert____ Ann Arbor, Mich. Discussed by B. S. H ert_____________ Rochester, N. Y . “ R oot Canal Therapy” By Harry B. Johnston______Atlanta, Ga. Discussed by C. F. Ash_______________ New Y ork City “ T he Root Canal Problem” By M . L. Rhein_________ New Y ork City Discussed by E. D . C oolidge____________ Chicago, 111. H. B. Johnston____________ Atlanta, Ga. “ R oot Canal Therapy” By Hermann Prinz____ Philadelphia, Pa.

THURSDAY, AUGUST 26 9 a. m. to 12 m. Report on

“ The

Problem T o o th ”

of

the Pulpless

“ Diagnosis Preceding R oot Canal Treatment” By Arthur B. Crane.. Washington, D . C. “ T h e Mechanics o f R oot Canal Treatment” By E. M . H all________ Kansas City, M o. “ T h e Medicinal Treatment and F illing o f R oot Canals” By J. R. Blayney__________Chicago, 111. “ R oot Canal F illin g Materials” By P. G. Puterbaugh_______ Chicago, 111. “ The Use o f Copper Am algam in Filling R oot Canals” By F. C. Husband ____T oron to, Canada 2 to 5 p. m. “ Causes o f Periapical Infections” By Carl J. G r o v e _______ St. Paul, Minn. “ Interpretation o f the H istologic Character­ istics o f the Periapical Tissue with Regard to R oot Canal Treatment” By Arthur Hopewell-Smith__________ ________...________ ________ Philadelphia, Pa.

“ Histopathologic Picture Following Root Canal Filling” By E. H. Hatton_________ Chicago, 111. “ Records o f Pulp Canal Histories and Root Canal Filling” By Edgar D. Coolidge____ Chicago, 111. “ Bleaching Teeth” By Dr. Scherbel_____ Leipzig, Germany At the close o f the reports, an opportunity will be given each essayist in this section to demonstrate his method of filling root canals by table clinics. SECTION II: BACTERIOLOGY, PATHOLOGY AND DIAG­ NOSIS O FFICERS OF SECTION

President:

Arthur D. Black___________ Chicago, 111. H onorary Presidents:

Dr. H. P. Pickerill-------------- New Zealand Dr. R. Wieser------------------ Vienna, Austria Dr. B. Gottlieb__________ Vienna, Austria Dr. H. Allerhand_________ Lwow, Poland Prof. Dr. Wilhelm Sachs .Berlin, Germany Dr. Edmond Rosenthal .—Brussels, Belgium Dr. Leon Frey_____________ Paris, France Dr. Rene Jaccard____Geneva, Switzerland Prof. Dr. Oscar Romer.—Leipzig, Germany Dr. Dona Josefina Landete ..Madrid, Spain Dr. Kanaye Hanazawa .... Tokyo, Japan Dr. L. Watry----------------Antwerp, Belgium Prof. Dr. Otto Walkhoff____________ --------------- --------------Wurzburg, Germany Dr. Caumartin_____________ Lille, France Dr. Friteau________________________ Paris Percy R. Howe-------------------Boston, Mass. Clarence J. Grieves________Baltimore, Md. Vice-Presidents:

Weston A. Price_________ Cleveland, Ohio Thomas B. Hartzell— Minneapolis, Minn. A. H. Hippie_______________ Omaha, Nebr. Secretary:

Russell W. Bunting____Ann Arbor, Mich. FOREW ORD

Section II extends greetings to the pro­ fession o f the world and presents its prelim­ inary program. In preparing the program oi this Section, an effort has been made to secure as many as possible o f the workers whose names are known the world over for

The Philadelphia Session their splendid studies in histopathology and bacteriology in the dental field. Appreciation is herewith expressed to all who are contrib­ utors. Invitations have been extended to several others, in foreign lands, from whom replies are expected within a fe w weeks. The American dentists o f this particular group o f workers extend to confrères in other lands a most cordial welcome to meet in Philadelphia in August f o r the discussion o f these subjects, which are fundamental to the progress o f the splendid service which den­ tistry is contributing to the advancement o f health. A r t h u r D. B l a c k .

835

TUESDAY, AU G U ST 24 9 a. m. to 12 m. “ Tissue Changes in Pyorrhea” By B. Gottlieb___________Vienna, Austria “ Studies o f the Peridental Tissues” By W . G. Skillen and Em il M ueller__ _____________________________ Chicago, 111. “ Clinical Value o f Blood Counts in Gum Bleeding” By Shirokuro Endo ______ T ok y o, Japan “ T h e Lymphatics o f the Peridental M em ­ brane and Dental Pulp” By Frederick B. Noyes____ Chicago, 111.

M O N D A Y , A U GU ST 23 10 a. m. to 12 m. President’s Address: “ T he Field o f Research in Dentistry.” T he Histopathology o f the Enamel and Dentin “ Structure o f the Enamel and Dentin with Reference to Pathology” By J. H ow ard Mummery____________ ------------------------------------ London, England “ Report on J. Leon W illiams’ Studies o f the Pathology o f the Enamel, with Report o f Experiments to Determine the Presence or Lack o f M etabolic Changes in the Enamel” By W illiam J. Gies____ New Y ork City “ Studies o f the Enamel” By R ufus W . Leigh — Washington, D . C. 2 to 5 p. m. T h e Pathology o f Dental Caries “ Bacteriologic Studies o f Dental Caries” By Russell W . Bunting_______________ _________________________ Ann Arbor, M ich. “ Bacteriologic Studies o f Dental Decay, Par­ ticularly as A ffecting the Hard Dental Tissue” By Tsurukichi Okumura ..T ok yo, Japan

Congress H all, where the first Congress o f the United States met. 2 to S p. m. Focal Infections “ The Teeth in Relation to General Health” By E. C. Rosenow____ Rochester, Minn. “ T he Problem o f Focal Infection as Pre­ sented in European Literature” By H. Allerhand________ L w ow , Poland “ Pathologic Aspects o f T ooth Infection” By Russell L. Haden__Kansas City, M o.

“ Metabolism, Glands o f Internal Secretion and Dental Caries” By R. Jaccard_____ Geneva, Switzerland

“ Clinical Case o f Femoral Neuritis Having a Focal Dental O rigin” By Rafael Biada _________Havana, Cuba

“ The M orp h ology o f the Oral Flora” By Theodore B. Beust___ Louisville, Ky.

“ Ludw ig’s Angina o f Dental Origin” By J. Meyer----------------------- Paris, France

836

The Journal of the American Dental Association

WEDNESDAY, AUGUST 25 9 a. m. to 12 m. “ Papers and Reports on F ocal Infections”

(Discussion of papers read at a previous meeting) By Edward H. Hatton____Chicago, 111. J. G. Meisser______ Cleveland, Ohio 2 to 5 p. m.

Etiology and Treatment o f the Dental Pulp and Chronic Alveolar Abscess “ Histopathology of the Dental Pulp” By Silvio Palazzi ________ Milan, Italy “ Pulpotoxin”

By Dr. Tadashi Masaki____Tokyo, Japan “ Extemporaneous Sterilization o f Cotton Wicks for Root Canals” By Dr. F. Brochier_______ Paris, France “ Clinical Significance of Infected, Degener­ ated Vital Pulps as Compared with the Infections About Teeth with Root Fillings” By U. G. Rickert____ Ann Arbor, Mich. “ Comparison of the Pathologic Changes of Pericementitis and Pulpitis” By Dr. Kanaye Hanazawa .Tokyo, Japan “ Bacteriologic Study o f the Pulpless Tooth” By M. L. Rhein______ New York City THURSDAY, AUGUST 26 9 a. m. to 12 m.

Diet in Relation to Dental Caries and Pyorrhea “ Report on Dental Disorders in the Sugar Industry” By Edmond Rosenthal and L. Watry _______________________ Brussels, Belgium “ Experimental Study of the Changes in the Dental and Oral Tissues Due to Vitamin Deficiency” By Tadashi Masaki------------ T ok y o, Japan “ T ooth Development”

By Dr. Bell_____ Dunedin, New Zealand “ Development of the Teeth and Jaws of Animals Under Normal and Abnormal Conditions” By D r. P roell_________________ Germany

“ Investigations of Dental Caries” By P. R. Howe__________ Boston, Mass.

“ The Relation of Oral Spirochetosis to Pul­ monary Gangrene” By B. S. Kline (M .D.) and F. S. Berger (M .D .)----------- Cleveland, Ohio “ Calcium; Its Activation, Utilization and Disturbances; Report o f Researches” By Weston A. Price___ Cleveland, Ohio 2 to 5 p. m.

General clinic. All the essayists on the program of Section II will be given an op­ portunity to present slides, charts and patho­ logic specimens in the form of table clinics to illustrate the ideas presented in their papers. SECTION III: PHYSICS, CHEMISTRY AND METALLURGY OFFICERS OF SECTION

President:

Marcus L. Ward ______ Ann Arbor, Mich. H onorary Presidents:

Dr. Bennejeant -------------------Oran, France Prof. Dr. Schonbeck_____Berlin, Germany Dr. Elander------------------Goteberg, Sweden Dr. Franchette ------------------Paris, France Dr. A. A. Nouel________ Venezuela, S. A. James H. Prothero__________ Chicago, 111. J. B. Robinson ___________ Baltimore, Md. William T . Chambers_____ Denver, Colo. Vice-Presidents:

L. E. Ford---------------- Los Angeles, Calif. J. A. C. Hoggan__________ Richmond, Va. John F. Stephan________ Cleveland, Ohio Secretaries:

Arthur R. McDowell _San Francisco, Calif. R. H. Volland---------------- Iowa City, Iowa FOREWORD

It is especially pleasant to extend greetings and words o f welcome to those interested in Section III, encompassing as it does three subjects that have attracted the attention of the public through the application of the marvelous developments in them to the hap­ piness of mankind, to the progress of indus­ try and to the readjustment of education in science. Physics, chemistry and metallurgy as pure sciences are fast becoming part of the work of preparatory schools and colleges, but the application of them has become not only a function of the professional schools but also a part of the duties of every person in any walk of life. The application of these subjects under the name of engineering

The Philadelphia Session is well known even to the pupils in the grade schools. T h e w ork o f physicists in the field o f the atom, and especially that part relating to the behavior and nature o f the electron, has touched some o f the secrets o f life as they have never been revealed before, thereby making obsolete much o f the information that

837

M O N D A Y , A U GU ST 23 10 a. m. to 12 m. President’s Address “ Selection o f Dental Materials” By W ilm er Souder (P h .D .) ________ ________________________Washington, D. C.

B elow : Philadelphia Commercial Museum, where the Seventh International Dental Con­ gress w ill be held. A b ove: Convention Hall, Philadelphia Commercial Museum.

has heretofore been regarded authentic. Your chairman extends thanks f o r the cooperation o f the officers o f this section in their efforts to present a program during this, the most rapid transition in the scientific development o f the w orld, and expresses the sincere hope that mutually beneficial discussions with rep­ resentatives o f other countries w ill take place at the approaching Congress. M arcus L. W ard .

“ B iologic Chemistry and the Dental Curric­ ulum” By Joseph S. Hepburn (P h .D .)______ ------------------------------------ Philadelphia, Pa. 2 to 5 p. m. “ Physical Chemistry o f Dental Cement” By Walter S. Crow ell (B .S .) _______ ------------------------------------ Philadelphia, Pa.

The Journal of the American Dental Association

838

“ M etallurgie Phenomena in Dental A lloys” By John S. Shell ( M . A . ) ___________ ___________________San Francisco, C alif. “ Chemical Problems in the Dental Office” By Ingo W . D . Hackh ( A .B .) ______ ____________________ San Francisco, C alif. “ Technic Metals” By Norris O. T a y lo r ( P h .D .) _______ __________________________ Iow a City, Iowa “ Electromotive Phenomena in Teeth” By W . R. Amberson (P h .D .), R. W . W illiams and H. Klein .Philadelphia, Pa. Part I. Clinical Observations, presented by M r. Williams. Part II. T h eory, presented by M r. Klein. S E C T IO N I V : O P E R A T I V E D E N ­ T IS T R Y O FFICERS OF SECTION

President: C. N. Johnson________________ Chicago, 111. Honorary Presidents: Dr. J. M . Whitney______ H onolulu, T . H. Dr. A . E. Webster_______T oron to, Canada P ro f. D r. W ilhelm Dieck Berlin, Germany Dr. M . deBoer________Amsterdam, Holland P ro f. H. W ilga ____________Warsaw, Poland D r. Georgei Roussel__________ Paris, France M r. J. W . Switters________ Utrecht, H olland P ro f. Dr. E. M etral.—Geneva, Switzerland Dr. Eco Calderon C _______________ M exico D r. Lubetjki_________________ Paris, France P ro f. D r. G. A . Stoppany----------------------_______________________ Zurich, Switzerland D r. Morineau___________ Paris, France D r. N. Etchepareborda--------------------------___________________Buenos Ayres, Argentina D r. Luis C. Aleman_______ Paraguay, S. A. Edwin T . Darby__________ Philadelphia, Pa. W . H. T a gg art_____________ Chicago, 111. Edward K . Wedelstaedt___ St. Paul, Minn. V ice-Presidents: C. E. W oodbury_____Council Bluffs, Iowa D onald M . Gallie_____________ Chicago, 111. John V. Conzett___________ Dubuque, Iowa Secretaries: W . L. F ic k e s ________________Pittsburgh, Pa. H. M . Semans____________ Columbus, Ohio FOREW ORD

A brief glance at the program f o r Section IV w ill convince the reader that the officers o f the Section have enjoyed the hearty cooper­

ation o f the most noted men in the field o f operative dentistry. Never has there been a more cordial attitude manifest on the part o f our best writers toward any meeting than that displayed in the present instance in the building o f this program. When the fact is noted that not one refusal to cooperate has been received by the officers o f Section IV, it is an eloquent demonstration o f the spirit which pervades the profession in con­ nection with the com ing Congress. Even our colleagues from other countries seem only too anxious to aid in any way in advancing the interests o f the Section, and the officers hereby tender their thanks to all who have responded to their appeal. A slight and very desirable change, at a late moment, in the plan o f presenting certain o f the topics has necessitated the addition o f a fe w names which are not included in the present list, but which w ill be added before the official program goes to press. C. N. J o h n s o n .

M O N D A Y , A U G U ST 23 10 a. m. to 12 m. President’s Address “ Report on G old F o il” By Charles E. W oodbury____________ -------------------------------Council Bluffs, Iowa Frederick H. Waters_____ Ames, Iowa Robert E. Blackwell____ Chicago, 111. “ Proper Form o f Fillings” By W illiam Finn________ Pittsburgh, Pa., John Scholten_C edar Rapids, Iowa H . A . T ru e________ Des Moines, Iowa Report on Cavity Preparation “ Cavity Preparation fo r F oil” By John V. Conzett______Dubuque, Iowa “ Cavity Preparation f o r Am algam ” B y R . R. Byrnes-------------------- Atlanta, Ga. “ Cavity Preparation f o r Gold Inlays” By Roscoe H. Volland—-Iowa City, Iowa 2 to 5 p. m. “ Amalgam Operations” By E. K . Wedelstaedt____ St. Paul, Minn. H. E. Friesell------------ Pittsburgh, Pa. Charles E. W oodbury____________ ------------------------------ Council Bluffs, Iowa

The Philadelphia Session “ General Practice o f Operative Dentistry” By A lfre d W alker__ ___ New Y ork City Charles F. B odecker.N ew Y ork City H. E. Friesell________ Pittsburgh, Pa. “ Conservatism in Operative Dentistry” By Henry W . G illett____ New Y ork City Edward B. Spalding-_____________ _____________________ Birmingham, M ich. Thaddeus P. Hyatt______New Y ork City “ Management o f Margins” By W . D . T r a c y ______ New Y ork City O. G. L. Lewis____ Philadelphia, Pa. John J. T ravis___ Ann Arbor, M ich. “ Teaching By R. H. A.

Operative Dentistry” R. Byrnes__ _________ Atlanta, Ga. M . Semans ___ Columbus, Ohio C. L'aTouche„_ Los Angeles, C alif.

839

Report on Porcelain “ Its Properties” By W illiam A. Capon—-Philadelphia, Pa. “ Its Indications as a Filling Material” By J. M elville Thom pson Detroit, Mich. “ Technic as It Relates to Inlays” By W . D . Vehe_____Minneapolis, Minn. “ Its General Indications” By A . L. LeGro__________ Detroit, Mich. 2 to 5 p. m. “ Bronchoscopic Cases o f Dental Interest” By Chevalier Jackson ( M . D .) _______ _______________________ Philadelphia, Pa. W illis F. Manges— Philadelphia, Pa. A . L. M idgley____ Providence, R. I.

Palace o f Fashions, which w ill house exhibits o f wearing apparel and textiles during the Sesquicentennial. T U E S D A Y , A U G U S T 24 9 a. m. to 12 m. “ Instruments and Instrumentation” By R. D . Thornton_______Richmond, Va. John J. T ravis___ Ann A rbor, M ich. J. Ben Robinson____ Baltimore, M d. “ Selection o f F illin g Materials” By A . E. Webster______ T oron to, Canada P rof. W . H. Gilmour--------------------_____________________ Liverpool, England R. D . T hornton_______Richmond, Va. “ G old and Its A lloys fo r Inlays” By F. V. Simonton.San Francisco, C alif. “ Occlusion in Operative Dentistry” By George T . W illiams__Seattle, Wash.

“ The Most Sensitive Areas o f the Teeth and Their Operative Treatment” By Charles F. Bodecker, L. M . Waugh and LeRoy L. Hartm an„New Y ork City “ M inim izing o f Pain” By W illiam P. Smedley-------Denver, Colo. E. H. Bruening_________ Omaha, Nebr. W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ Enamel Margins f o r Fillings” By John F. Stephan____Cleveland, Ohio C. N. Johnson_________ Chicago, 111. W . D . T racy______ New Y ork City

840

The Journal of the American Dental Association

“ Preventive Dentistry” By W allace Seccombe— T oronto, Canada Arthur L. Walters______Tulsa, Okla. John G. Hildebrand W aterloo, Iowa “ T h e Cast G old Inlay” By L. B. M orris_______ Denver,

Colo.

2 to 5 p. m. “ Thym ol-Cem ent as aCavity F illin g” By P ro f. J. Jarza b _______ Lw ow , Poland “ Special A llo y ” By Dr. Mitsuru Okada___ T ok y o, Japan “ Stages o f the Technic o f H igh Speed M otors. Cavity Preparation Based on E x­ perimental and Theoretical Study, with Special Reference to the Sensitivity o f the Dentin and the Rhythm o f Cavity M ar­ gins” By Emile Huet _______ Brussels, Belgium “ Protection o f the Interproximal Space” By P ro f. J. W . Switters_____________ ___ ____________________ Utrecht, H olland “ Silicate Cements” By Dr. M . Kulka_______ Vienna, Austria S E C T IO N V : P A R T IA L D E N T U R E P R O S T H E S IS (In clu d in g C r o w n a nd B rid ge W o r k ) OFFICERS OF SECTION

President: Hart J. Goslee------------------------ Chicago, 111. H onorary Presidents: D r. Henri Villain____________ Paris, France D r. W illiam E. Cum m er„Toronto, Canada D r. H ousset__________________ Paris, France P r o f. Dr. C.. F. Pfaeffli--------------------------______________________ Geneva, Switzerland P r o f. Dr. Carl Fritsch_________________ __________Frankfort-on-the-M ain, Germany D r. H. Ganz______Prague, Czechoslovakia D r. Luis Subirana___________M adrid, Spain D r. Pedro Labarco .Ilubertson, Chili, S. A . D r. Sergis Cabrera______ Bello, Peru, S. A. Charles L. Alexander______Charlotte, N. C. F. E. Roach___________________Tam pa, Fla. Forrest H . Orton____ San Francisco, Calif. V ice-Presidents: E. T . Tinker__________ Minneapolis, Minn. James Kendall Burgess------- New Y ork City W illiam H. Elliott________ Detroit, M ich. Secretaries: Ellison H illyer_____________ Brooklyn, N. Y . C. S. T u ller______________ New Orleans, La.

FOREW ORD

T h e officers o f Section V feel that partial denture prosthesis, including crown and bridgework, embraces a very important field in the science and art o f dentistry, and have put forth every effort to build a program in every way fittingly expressive o f the progress and advancement which has been made along these lines. T he program offered, while per­ haps not yet entirely complete, is nevertheless representative o f every part o f the world, and expressive o f the best and most rational thought o f the leading minds o f today. T o our foreign guests who pay us the honor o f their presence, and o f their valued contribu­ tions, we extend homage, together with as­ surances o f our keen and deep appreciation, and o f our warmest welcome and best wishes. T o those o f our own members who have so w illingly and cheerfully aided in building and contributing to this program , we extend our grateful thanks f o r their prompt response to the call, and f o r their loyal support. H a r t J. G o sle e .

M O N D A Y , A U G U ST 23 10 a. m. to 12 m. President’s Address Discussed by Rea Proctor M cG ee_____ Pittsburgh, Pa. “ Partial Denture Prosthesis” By Georges Villain________Paris, France Discussed by G. Walter Dittmar________Chicago, 111. “ Crown and Bridgework in Czechoslovakia” By H . G a n z------ Prague, Czechoslovakia Discussed by W illiam D . T ra cy______ New Y ork City “ Design and Construction o f Unilateral Par­ tial Dentures” By Masakata Yazaki______T ok y o, Japan Discussed by Edward Kennedy________New Y ork City 2 to 5 p. m. “ Some Considerations on Fixed and Rem ov­ able Bridgew ork” (In Spanish) By E. L. Crabb----------------Havana, Cuba Discussed by C. Victor Vignes______New Orleans, La.

The Philadelphia Session “ Determining Future Types o f Crown and Bridgework by a Scientific Knowledge o f Supporting Tissues” By T . A . H ardgrove-F ond du Lac, Wis. Discussed by Frederick B. Noyes________ Chicago, 111. W illiam Hopkinson___ M ilwaukee, Wis. “ Some Basic Facts out o f the Dual Individu­ ality o f the Human Denture and Their Relation to Success and Failure in Bridgew ork” By James Kendall Burgess___________ _________________________ New Y ork City

841

T U E S D A Y , A U G U S T 24 9 a. m. to 12 m. “ A Modern Conception o f Proper Bridge Attachments f o r Vital Teeth” By K. W . Knapp___ Minneapolis, Minn. Discussed by Stanley D . Tylm an________ Chicago, 111. J. M . Prime_____________ Omaha, Nebr. “ A Consideration o f Some Important Factors in Partial Denture Prosthesis” By Norman B. Nesbitt____ Boston, Mass. Discussed by H. F. Methven____________ Chicago, 111. “ T he Use o f Cast G old Inlays as Bridge Abutments” By R. H. Volland______ Iow a City, Iowa Discussed by J. V. Conzett___________ Dubuque, Iowa “ T he Balancing Principle in Partial Dentures and Bridgework as Distinguished from Full Dentures” By Joseph Homer_______New Y ork City Discussed by John H. Hospers___________ Chicago, 111. “ Preparation o f a Vital T ooth fo r a Porce­ lain Jacket Crown” (Illustrated in detail by m oving pictures) By H. Spalding Both___ New Y ork City Discussed by W . D . T racy and W illiam A. Squires ____________________ ____ New Y ork City 2 to 5 p. m. C L IN IC A L

T he Liberty Bell, whose ringing announced the signing o f the Declaration o f Independ­ ence, July 4, 1776. Discussed by Ellison H illyer_________ Brooklyn, N. Y. John Oppie M cC all____New Y ork City “ Conservatism in Bridgework” By W . D . N. M oore___ ____Chicago, 111. Discussed by Marcus L. W ard____ Ann A rbor, Mich. “ Some Important Changes in the Practice o f Bridgework” By F. B. Vedder______Ann Arbor, Mich. Discussed by A . J. Irving___________ New Y ork City

M A T IN E E

Tuesday afternoon from 2:00 to 5:00 will be devoted entirely to a general clinic at which all o f the essayists o f Section V w ill be given an opportunity to illustrate papers by means o f table clinic demonstrations. W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ Clinical and Radiographic Observations on Fixed and Semifixed Bridgework” By Stanley D . T ylm an ____ Chicago, 111. Discussed by Otto G. Krause________ Milwaukee, Wis. “ Crown and Bridgework in General Practice” By Carlisle C. Bastian—-New Y ork City Discussed by Oscar J. Chase__________New York City

842

The Journal of the American Dental Association

“ The Service Rendered by Fixed B ridgew ork” By R. J. Rinehart_____ Kansas City, M o. Discussed by E. H. Hubbuch___________ Louisville, Ky. “ A Consideration o f Fixed Bridge Restora­ tions; Their Indications, Limitations and Construction” By A. O. Klaffenbach— Iow a City, Iowa Discussed by Robert E. M a cB oy le _______ Chicago, 111. “ Partial Denture Construction” By Edward Kennedy_____ New Y ork City Discussed by Polk E. Akers______________ Chicago, 111. A. L. M u lfo r d _________ Philadelphia, Pa. 2 to 5 p. m. “ Fixed Bridgework with Special Reference to Porcelain Pontics, Where the Supporting Metal Member Does Not Come in Contact with the Mucosa” By E. E. Haverstick ____ St. Louis,

M o.

Discussed by W . A. Coston__________ Kansas City, M o. George B. Scott___________ St. Louis, M o. E. H. Bruening____________ Omaha, Nebr. “ A Consideration o f the Essentials o f A void ­ ing Trauma in Partial Dentures’, Including a Form o f Hand-Made Joint” By S. H. M cA fee _____ N ew Orleans, La. Discussed by S. S. Grosjean_________ New Orleans, La. “ A Simple, Somewhat Condensed, Practical and Accurate Technic fo r Partial Denture Construction” By K . K . Cross____________Denver, Colo. Discussed by Charles L. Alexander____Charlotte, N. C. Arthur H. Brown_______ Denver, Colo. “ Balanced Occlusion in Bridgework and the Detailed Steps in the Construction o f a Removable Bridge” By L. W . Doxtater_______New Y ork City Discussed by Forry R. G e tz ___________ New Y ork City

TH U RSDAY, AU G U ST 26 9 a. m. to 12 m. “ Structural Variations o f A lveolar Bone Under Removable and Fixed Restorations” By S. M . W eaver_____ Cleveland, Ohio Discussed by H. W . M acM illan _____ Cincinnati,

Ohio

“ Bridge Abutments on Vital Teeth” By J. Russell M itchell_____ Atlanta, Ga. Discussed by Delos L. H ill______________ Atlanta, Ga. “ Partial Denture Design” By Hugh M cW illiam s .Philadelphia, Pa. Discussed by Frank A. F o x _______ _Philadelphia, Pa. “ Partial Denture Construction from an Engi­ neering Point o f View Based upon the Physiologic Requirements” By Arthur P. Little____ St. Paul, Minn. Discussed by G. E. Cleophas_____________________ ___ Beloit,Wis. I. L. Furnas_____________ Cleveland, Ohio “ Occlusal Correction in the Construction o f Fixed and Removable Partial Restorations” By Harry G. M o r to n —Milwaukee, Wis. Discussed by J. W . C r a w fo r d _______ Milwaukee, Wis. 2 to 5 p. m. “ Application and Construction o f Removable Bridgework by Means o f Single Unit Cast­ ings” By Polk E. A k ers _________ Chicago, 111. Discussed by F. van M inden____________ Chicago, 111. “ Porcelain Jacket Crowns, Field o f Useful­ ness and Details o f Construction” By H ugh Avary___ San Francisco, C alif. Discussed by Nye W . Goodman____Los Angeles, Calif. W illiam D . Vehe____Minneapolis, Minn.

■ “ Sectional Impression Technic” By M . B. R u d d _________ Richmond, Va.

“ Efficient and Economical Partial Dentures in Simplified Types” By Edwin H. M auk_________________

Discussed by A. L. LeG ro-------------------- Detroit, M ich. F. E. Roach________________ Tam pa, Fla.

Discussed by W illiam E. Cummer. ..Toronto, Canada

------ ----- ------------------ San Francisco, C alif.

7 he Philadelphia Session “ Truncated Cone Versus Mandibular M ove­ ment” By F. W . Frahm____ Los Angeles, Calif. Discussed by Russell W . Tench_______ New Y ork City R. O. Schlosser_____________ Chicago, 111. “ Stationary or Removable Bridges” •By E. Steinschneider___ Vienna, Austria

843 FOREWORD

Our objective in the construction o f the program o f Section V I has been to represent fu ll denture construction as nearly as is pos­ sible. W e believe that which is good must, “ T ake its place in the sun,” and we live in hope that many occasions may present fo r the exposition o f that which is o f value and which is not here recorded. T he first two days are devoted to essays and reports, which ow in g to the number to be presented must be confined to one half hour each. T h e last tw o days w ill be devoted to clinics, so that these essayists and others may demonstrate their subject matter. C harles

Lane.

M O N D A Y , A U G U S T 23 10

a. m. to

12

m.

“ T h e Application o f the Spherical Principles o f Occlusion in Full Dentures” By H. B. Washburn_____ St. Paul, Minn. “ Esthetics and Denture Construction” By M . M . House Kansas City, M o. “ Mandibular Movements and Occlusion” By John W . Needles______ Pueblo, Colo. “ Compound Impressions” By F. M . H ight_______ Houston, Texas Penn Athletic Club. S E C T IO N V I : F U L L D E N T U R E P R O S T H E S IS OFFICERS OF SECTION

President: Charles Lane________________Detroit, M ich. Honorary Presidents: Dr. A . Gysi__________ Zurich, Switzerland Dr. W . J. Tuckfield______________ Australia Dr. Marcelino Weiss_______ Havana, Cuba P ro f. Dr. Hermann Schroder___________ ____________________________Berlin, Germany Dr. Enrique Gomez________________ M exico J. Leon W illiams__________ New Y ork City Rupert E. H a ll________________Chicago, III. George S. M onson________ St. Paul, Minn. V ice-Presidents: Dayton Dunbar Campbell Kansas City, M o. M . M . House_____________Kansas City, M o. R. R. Gillis.________________ Hammond, Ind. Secretaries: E. B. Owen___________________St. Louis, M o. J. W . C raw ford__________ Milwaukee, Wis.

“ T h e Influence o f Speech Habits. Reproduc­ tion o f Expression on the Arrangement o f Teeth in Full Artificial Dentures” By Russell W . Tench___ New Y ork City “ Architectural Bone Changes o f Face and Cranium” By George S. M onson._St. Paul, Minn. 2 to 5 p. m. “ Condylar Adjustment— A Simplified Equip­ ment and Accurate Method fo r Its Use in the Teaching and Practice o f Full Denture Construction” By W . H. W right_______ Pittsburgh, Pa. “ Fundamentals in the Reproduction o f M an­ dibular Movements in Edentulous Mouths” By George P. Phillips____ Boston, Mass. “ A Summary o f the Development o f the A r­ ticulator. A Summary o f the Delevopment o f the Metal Base Dentures” By Rupert E. H all________ Chicago, 111. “ A New and Simplified Method o f Construct­ ing Vulcanite Dentures” By Charles L. Alexander_____________ _________________________Charlotte, N. C.

844

The Journal of the American Dental Association T U E S D A Y , A U G U S T 24 9 a. m. to 12 m.

“ The Casting o f Dentures” By Keiichi H o r ie ...........

T ok y o, Japan

“ Denture Impressions Under Controlled Pressure” By Arthur H. Brown .. . Denver, Colo. “ The Dental Radiogram— Its Importance to the Prosthodontist” By H oward H. Jackson —Detroit, Mich.

“ A Demonstration o f Accurate Methods o f Teaching and Practicing Full Denture Construction” By W . H. W r ig h t______ Pittsburgh, Pa. “ Registration o f Mandibular Movements with Plastic Material” By W . A. Giffen ___ _____ Detroit, Mich. “ Instructing Patients in the Care o f Dentures and Bridges” By Henry W . Gillett___ New Y ork City

“ The Dentist’ s Responsibility fo r Patient’s Care o f Dentures” By Henry W . G illett____ New Y ork City

“ A New and Simplified M ethod o f Con­ structing Vulcanite Dentures” By Charles L. Alexander................-..... _________________________ Charlotte, N. C.

“ Registration o f M andibular Movements with Plastic M aterial” By W . A. Giffen ________Detroit, Mich.

“ A Summary o f the Development o f the Articulator” By Rupert E. H a l l................ Chicago, 111.

“ Principles o f Articulation” By A lfred Gysi - Zurich, Switzerland

“ Principles o f Articulation” By A lfred G y s i___ Zurich, Switzerland

2 to

5 p. m.

“ A Study o f the Dental Arch Forms o f Japanese Races” By Mitsuru Okada ______T ok y o, Japan “ Human Dental Mechanism— Articulation in Prosthesias (Physiologic Method o f Taking the B ite )” By Georges Villain ______ Paris, France “ The Line o f Occlusion or the Line o f the D .ntal A rch” By M arcellino W eiss____ Havana, Cuba “ Sterilization o f Full Dentures” By J. M e y e r_______________Paris, France “ Kinematics o f M andible” By B. R. Bakker______ Utrecht, Holland W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. CLINICS

“ The Radiogram as an A id to the Prostho­ dontist” (A presentation o f dry specimens showing conditions o f the cortical layer. Radiograms o f these w ill be presented so that comparison may be made with radio­ grams from patients illustrating similar conditions) By H oward H. Jackson.—Detroit, Mich. “ Method o f Reproducing Mandibular M ove­ ments in Full Denture Cases” By George P. Phillips____ Boston, Mass.

2 to 5 p. m. Clinics w ill be presented by operators o f other nations. T H U R S D A Y , A U G U S T 26 9 a. m. to 12 m. “ The Theory o f Articulation and M andib­ ular M ovem ent” By Russell W . Tench New Y ork City “ Mechanical Arrangement o f Posterior Teeth” By Victor' H. Sears....... - New York City “ The Palladium A lloy Base Plates. Its A d­ vantage and the Technic fo r Its Construc­ tion” By W . J. Pryor________ Cleveland, Ohio “ Checking and Adjusting Dentures for Resilient Tissue” By A. A lfred N elson ___ Detroit, Mich. “ Selecting Teeth fo r the Edentulous Case” By Edward H. Bruening— Omaha, Nebr. “ Compound Impression” By F. M . H ight............. Houston, Texas “ Another Articulating Device” By Arthur H. B ro w n ..___ Denver, Colo. 2 to 5 p. m. “ Impressions j Preparing the Casts} Fitting the Base Plates $ Constructing the Occlusal Rim sj Technic fo r Balancing in the Mouth 5 Transfer fo r Balanced Relation-

Pet

Aur tin F. J a m e s C hicago, 111. Hono rary Preside

Grace Rogers S~alc

Gillette Hatden

C0lu1mhus, Ohio s4acretary

h: 4

Birm inghnm, MIC

Secretary 1 R. Stillmar Ne_w York City

C. H. Schott

Cincinnati. Ohio Vic e President

Cl ycle M. Gearhart Was hineton, D. C.

ferhert Hoot "eland, Ohia Vi ce President

Vi ce President

Officers of the Section on Periodontia, Seventh International Dental Congress, Philadelphia, Pa., Aug. 23-27, 1926.

The Journal of the American Dental Association

846

ship by the Use o f the Transfer B ow and Equalizing W a x ; M ounting on the In­ strument; Securing Central Occlusion; Setting up the Teeth (Esthetics and Sta­ bility) ; Finishing the Case and the Final Grind-In” By George S. M onson .... St. Paul, Minn. W illiam Denton T a y lo r___________ _______ ________________Newark, N. J. J. W . M cConnell____Pittsburgh, Pa. Charles H. Jamieson ..Frederic, Wis. H. B. Washburn_____ St. Paul, Minn. “ Complete Technic o f Denture Construction” By M . M . House____ Kansas City, M o. “ Studies o f Occlusion” By J. W . Needles__________ Pueblo, Colo. “ Bridgew ork in Coordination with Dentures” By Leo S. Johnston______ Louisville, Ky. “ Continuous Gum Dentures” By Dayton D . Campbell_____________ ____________________ Kansas City, M o. “ G old Dentures” By Harry E. Holaday..Kansas City, M o. S E C T IO N V I I : E X O D O N T I A , A N E S T H E S IA A N D R O E N T G E N O L O G Y O FFICERS OF SECTION

President: J. F. Biddle___ Pittsburgh, Pa. (Deceased) A cting President: R. Boyd B ogle___________ Nashville, Tenn. H onorary Presidents: Dr. W illiam Guy____ Edinburgh, Scotland P ro f. D r. Guido Fischer______ ____ _____ ------------------------ ----------- Hamburg, Germany P ro f. A . Cieszynski_________ L w ow , Poland P ro f. D r. Hans Seidel.M arburg, Germany D r. Bias R o ca fort____ ___...Havana, Cuba Dr. George J. Baudoux ...Brussels, Belgium D r. Gerard M aurel__________ Paris, France D r. B. M ayerhofer_________ Vienna, Austria Dr. Carlos Occelli__________________ M exico D r. M iegeville________________Paris, France D r. Pedro Gracia M . ______________ M exico D r. Paulino Franco________ Colom bia, S. A. C. Edmund Kells_______ New Orleans, La. George B. W inter___________ St. Louis, M o. Vice-Presidents: H ow ard R. Raper______________________ -------------------------Albuquerque, New M exico Horace M . Davis___________ Baltimore, M d. H. A. Maves_________ Minneapolis, Minn.

Secretaries: A. L. Frew __________________ Dallas, Texas W illiam J. M cK inley__ Philadelphia, Pa. FOREWORD

The gathering o f representatives o f the dental profession from all parts o f the w orld to attend and contribute to the success o f the Seventh International Dental Congress w ill make it the largest and most important meet­ ing in dental history. Presentation o f papers from members o f the profession in the United States and abroad w ill record the achieve­ ments and advancement o f professional activities. T h e officers o f this section desire to express their sincere appreciation to those who have so w illingly contributed to the program. T h ey have made it possible a pro­ gram o f value to all interested in exodontia, roentgenology and anesthesia. T he gather­ ing o f the forem ost scientists and practitioners, who w ill take part in its deliberations, will make enviable history fo r dentistry. It is hoped that the profession at large w ill avail themselves o f the rare opportunity to attend a meeting o f such magnitude and importance. R. B o y d B o g l e . M O N D A Y , A U G U S T 23 10 a. m. to 12 m. Address o f the Acting President By R. Boyd B ogle______ Nashville, Tenn. “ Roentgen-Ray Burns” By C. Edmund Kells.—New Orleans, La. Discussed by Thomas P. H inm an ..... ...... Atlanta, Ga. “ R adiology” By D r. Scherbel_____ Leipzig, Germany “ T he Progress o f Dental Radiography in Cuba” By Dr. Bias R o c a fo r t ____ Havana, Cuba 2 to 5 p. m. “ Physical Examination o f Patients Before Extraction o f Teeth Under General Anes­ thetics” By Lawrence C urtis__ Philadelphia, Pa. “ General Anesthesia” By P rof. W illiam Guy_______________ ____________________ Edinburgh, Scotland “ Ethylene Anesthesia in Dental Surgery” By Edward L. M oravec_____________ _____________________ Cedar Rapids, Iowa “ Nitrous Oxid-O xygen Anesthesia” By Charles K . Teter___ Cleveland, Ohio

847

Th e Philadelphia Session T U E S D A Y , A U G U S T 24 9 a. m. to 12 m. “ T he Relationship o f the Teeth to the M a x­ illary Sinus; Anatomic Factors Underlying the Diagnosis and Surgery o f This Region” (Illustrated) By H ugh W . M a cM illan ____________ _________________________ Cincinnati, Ohio “ Relationship o f the Teeth to the Mandibular Canal and the M axillary Sinus” By Thestle T . Job and Ralph H. Fouser___________________ Chicago, 111. “ Exodontia” By C. R. Grissinger_______Pittsburgh, Pa. “ Position o f the Head o f the Patient A ccord­ ing to the Plane o f the Direction o f Piercing the Needle in Deep Injections into the T rifa cia l Nerve” By P r o f. A. Cieszynski— L w ow , Poland “ Periseronitis or the Difficult Dentition o f the T h ird M o la r” By Shirokuro E n d o ______ T ok y o, Japan 2 to 5 p. m. “ Radiographic Interpretation o f the Various Types o f Impacted Mandibular T h ird M olar, from W hich a Definite Operative Technic Can Be Analyzed” By Frank W . Rounds____ Boston, Mass. “ Operative Technic fo r the Rem oval o f the Various Types o f Impacted Mandibular T h ird M olar. T he results o f ten years’ research. (Lantern slide illustrations made from original drawings by the artist, T om Jones, detailing the operative procedure fo r vertical, mesioangular, distoangular, horizontal, buccoangular, linguoangular and complete lingual types o f im paction)” By George B. W inter____ St. Louis, M o. “ Postoperative Treatment A fter the Rem oval o f the Impacted Mandibular T h ird M ola r” By George C. Fahy— New Haven, Conn. W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ T he Value o f the Radiogram in General Practice” By H ow ard R. Raper________________ ____________________ Albuquerque, N. M . “ T he Value o f the Radiogram in R oot Canal T herapy” By H arry B. Johnston_____ Atlanta, Ga.

“ T he Value o f the Radiogram in Exodontia” • By Frederick F. M o l t _____ Chicago, 111. “ T he Possibilities o f the Radiographic D iag­ nostic Difficulties and Errors” By P r o f. Dr. Wilhelm Dieck________ _________________________ Berlin, Germany “ Implantation and Healing-In o f Foreign Matter” (W ith roentgen-ray projection o f clinical cases) By E. P. W eigele____ Leipzig, Germany “ Implantation Attempts” By D r. G. Stein________ Vienna, Austria 2 to 5 p. m. “ The Value o f the Roentgen Ray in Oral Diagnosis” By Clarence O. Simpson— St. Louis, M o. “ T he Value o f the Roentgen Ray in Oral Surgery” By Robt. H. Ivy and Leroy M . Ennis _____ ,__________________ Philadelphia, Pa. “ The Value o f the Roentgen Ray in Orthodontia” By L. W . W augh________New Y ork City “ T he Roentgen Ray in the Diagnosis and Prognosis o f Periodontal Lesions” By John Oppie M cC all— Buffalo, N. Y. “ The Status o f M outh Preparation f o r Den­ ture Construction” By M . M . House______ Kansas City, M o. T H U R S D A Y , A U G U S T 26 9 a. m. to 12 m. “ The Problem o f Root Resection” By F. B. M ooreh ea d______ Chicago, 111. “ Apicoectom y” By Chalmers J. Lyons. Ann Arbor, Mich. “ The Pathology o f the M axillary Sinus and Its Management from the Dental Oral Surgeon’ s Point o f View ” By T . A. H ardgrove Fond du Lac, Wis. “ Some Systemic Aspects o f Periodontal Dis­ ease” (Illustrated) By Herman R. O s g o o d __ Boston, Mass. 2 to 5 p. m. “ T he Internal Anatomy o f the Mandible and M axillae, with Special Reference to Local Anesthesia” By L. W allace Ohl______Pittsburgh, Pa.

848

The Journal of the Am erican D ental Association

“ Local Anesthetics” By F. N. Doubleday ...London, England “ Probable Anomalies o f the M axilla ” By Dr. Pedro Gracia M _________M exico “ Extraction o f the T h ird M ola r” By Carlos O c c e lli________________ M exico

SECTION V III:

O R T H O D O N T IA

O FFICERS OF SECTION

President: B. E. Lischer_______________ St. Louis, M o. H onorary Presidents: P ro f. Dr. R. Schwarz.__.Basel, Switzerland D r. Jose J. R o jo ___________________ M exico Dr. Orosman Lopez________ Havana, Cuba Privatdocent Dr. Paul Simon___________ ---------------------------------------- Berlin, Germany Dr. Jose Valderrana_________ M adrid, Spain D r. Stanley Wilkinson___________________ -------------------------------- Canterbury, Australia Dr. T a ca il----------------------------- Paris, France Dr. Juan Manes--------------------M adrid, Spain Dr. Quintero________________ Lyons, France Dr. W ilhelm P f a f f ......Leipzig, Germany Dr. R o d o lfo Tarrasido___ Argentine, S. A. Edward H. A n gle________ Pasadena, Calif. Victor H ugo Jackson_____ N ew Y ork City V ice-Presidents: Frank M . Casto _________ Cleveland, Ohio H. A . Pullen_________________Buffalo, N. Y. O. A . Oliver-----------------------Nashville, Tenn. Secretaries: L. M . W a u g h -------- ---- ------ New Y ork City Roscoe A. D a y ______ San Francisco, Calif. FOREW ORD

On behalf o f the officers o f the Congress and o f Section V III, I desire to express our grateful appreciation to all o f the essayists, clinicians and discussors who have so freely consented to contribute to the program o f the section, and our esteem fo r the profession at large fo r the opportunity o f presenting a summary o f orthodontic knowledge, and to extend cordial greetings to our colleagues in foreign lands. A t a meeting o f the officers o f the section last September, it was deemed advisable to arrange the program in a man­ ner which w ould present the present status o f the specialty. T h e reader w ill note that the contributions scheduled f o r each session are closely related and devoted to a central theme. Thus, the practice o f orthodontics is first considered, to be follow ed by reports on

orthodontic education. Then, the etiology and diagnosis o f dental anomalies are dis­ cussed, after which, office procedures are presented in various ways. Principles o f treatment are follow ed by surgical ortho­ dontics and, finally, methods o f treatment are discussed in detail. W hile much o f the matter to be presented is o f a specialized nature, its principal purpose is to provide the dentist with a more comprehensive conception o f the problems encountered in orthodontic service. B. E. L ischer . M O N D A Y , A U G U S T 23 10 a. m. to 12 m. President’s Address: “ The Orthodontic T rend” Discussed by C. A . H awley_______ Washington, D . C. W . R. Dinham___________ Portland, Ore. “ T he Value o f Orthodontic Experience in General Practice” By A lfred C. Lockett..London, England Discussed by R. Ottolengui__________ New Y ork City W . W . W oodbury____ H alifax, N. S. “ Some Ethical Phases o f Practice” By J. Low e Y ou n g_____ New Y ork City Discussed by Lloyd S. Lourie____________ Chicago, 111. H arold Chapman______ London, England “ Keeping One’s M ind Open” By Allen H . Suggett-------------------------____________________San Francisco, C alif. Discussed by Oscar Carrabine________ New Y ork City W . A . McCarter__________Topeka, Kan. 2 to 5 p. m. “ Professional Vocations and Graduate Study” By W illiam J. Gies______ New Y ork City “A University Curriculum fo r Graduate Orthodontics” By Guy S. M illberry________________ __________________ San Francisco, Calif. “ T he Technical Training o f the Orthodontist” By Abram H offm an______ Buffalo, N. Y . “ Orthodontics as a Professional Pursuit” By Frank M . Casto_____ Cleveland, Ohio “ Organizing Clinical Service to Meet Com­ munity Needs” By Arthur D . Black_______ Chicago, 111. General Discussion

Officers o f the Section on Mouth Hygiene, Preventive Dentistry k. and Public Health A

T hom as A lexander Forsyth B oston , Mass. H on orary President

G eorge Eastman R ochester, N . Y . H on orary President

G uy S. M illberry San Francisco, Calif. Secretary

E, L . Petlibone C leveland, O h io Secretary H. J« Burkhart R ochester, N . Y. President

A lfred C . Fon es B ridgeport, C on n . V ice President

Herbert L. W heeler N ew Y ork City V ice President

Charles H . O akm an D etroit, M ich , V ice President

Officers o f the Section on Mouth Hygiene, Preventive Dentistry and Public Health, Seventh Interna­ tional Dental Congress, Philadelphia, Pa., Aug. 23-27, 1926.

850

T h e Journal o f the American D ental Association T U E S D A Y , A U G U S T 24 9 a. m. to 12 m.

“ One o f the Fundamental Factors Concerned in the E tiology o f D entofacial D e­ formities” By M ilo Heilman______ New Y ork City Discussed by B. W . W einberger______ New Y ork City Harvey Stallard_____ San D iego, Calif. “ Indications fo r the Treatment o f M aloc­ clusion” By Charles R. Baker______Evanston, 111. Discussed by R. C. W illett________________ Peoria, 111. M ax E. P. Ernst_________ St. Paul, Minn. “ Radiographic Diagnosis o f Difficult Den­ tition” By Clarence O. Simpson.—St. Louis, M o. Discussed by M . N. Federspiel______Milwaukee, Wis. W . H. Gilpatric__________ Boston, Mass. “ Engineering in Orthodontic Diagnosis” By F. L. Stanton—-....... New Y ork CityDiscussed by Abram H offman_________ Buffalo, N. Y. Norman L. H illyer_____Brooklyn, N. Y. “ Orthodontic Diagnosis” By Paul W . Simon____ Berlin, Germany Discussed by A . H. Suggett____ San Francisco, Calif. C. A. H awley_______ Washington, D . C. “ Further Gnathostatic Research; T h e Im por­ tance o f the External Orbital Plane” By A . Cieszynski_______ L w ow , Poland

City

Discussed by B. G. DeVries_____ Minneapolis, Minn. T . G. Duckworth ...San Antonio, Texas “ Office Records” By C. W . B. Wheeler___New Y ork

“ The Utilization o f Orthodontic Methods to Prevent Denture Maldevelopm ent” By A . C. Rohde________ Milwaukee, Wis. Discussed by J. B. K ohagen__________ Duluth, Minn. F. C. Rodgers___________ St. Louis, M o. “ Improved M od el Anchor Bands and Band M aterial” By A . Edel________ Amsterdam, Holland W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ A Resume o f Our K now ledge o f Tissue Changes Caused by Orthodontic T ooth M ovem ent” By L. M . W augh________ New Y ork City Discussed by Martin Dewey and Charles F. Bodecker. _____________ New York City “A Radiographic Study o f Orthodontic T ooth-M ovem ent” By A . H. K etcham _________Denver, Colo. Discussed by O. W . W hite______________ Detroit, M ich. Hardy G. Bean________ T oron to, Canada “ Developments in Electrometallurgy o f Inter­ est to the Dental Profession^’ By Reginald V. W illiam s.„Buffalo, N. Y. Discussed by F. R; Blumenthal__________ Boston, Mass. C. M . M cCauley____ Los Angeles, Calif. “ Cephalometry and Orthodontia” By P rof. R. Schwarz __ Basel, Switzerland

2 to 5 p. m. “ Office Organization” By Joseph D . Eby______ New Y ork

“ Laboratory Methods” By Ernest N. Bach_________ T oled o, Ohio Discussed by J. E. Johnson____________ Louisville, Ky. H. D . Keeler__________ Des Moines, Iowa

City

Discussed by F. A. Delabarre___________ Boston, Mass. O. W . Brandhorst______ St. Louis, M o. “ Office Treatments” By Ralph W aldron________Newark, N. J. Discussed by S. P. Cameron________Philadelphia, Pa. W . E. Flesher____ Oklahoma City, Okla.

“ Occlusion and Articulation in Orthodontics” By Georges Villain_________ Paris, France Discussed by Martin Dewey__________New Y ork City F. T . Murless....- ....... H artford, Conn. “ Comparative Advantages o f the Ribbon A rch ” By Orosman Lopez________Havana, Cuba 2 to S p. m. “ Principal Forms o f T h ird M olar Impac­ tions” By George B. W inter____ St. Louis, M o. Discussed by H. E. Kelsey_____________ Baltimore, M d. W . E. Stoft_______________ Omaha, Nebr.

851

The Philadelphia Session

“ Surgical Procedures which Extend the Field of Dentofacial Orthopedics” By M . N. Federspiel

.M ilwaukee, Wis.

Discussed by Louis Schultz_____________ Chicago, 111. Chalmers J. Lyons___Ann Arbor, Mich. Case Reports from Practice “ Surgical-Orthodontic Correction o f a Mac­ ro-mandibular Deformity” By Louis Schultz__________ Chicago, 111. R. C. Willett____________ Peoria, 111. “ Practical Demonstration” By Paul W. Simon_____ Berlin, Germany TH U RSDAY, A U G U ST 26 9 a . m . to 12 m.

“ Some Fundamental Principles o f Removable Appliances” By V. H. Jackson_______ New Y ork City

“ The Present Status o f Lingual Appliances” By Oren A. Oliver____ Nashville, Tenn. “ Recent Advances in Fixed Appliances” By Henry C. Ferris____ New York City “ The Value o f Fixed Attachments in Treat­ ment Appliances” By G. W. Grieve_____ Toronto, Canada “ The Practical Simplification o f Fixed Appliances” By J. D. McCoy____ Los Angeles, Calif. 2 to 5 p. m. “ Special Studies in Orthodontia” By Juan Manes__________ Madrid, Spain “ The Treatment of Malocclusion in Adults” By Thomas L. Grisamore._Chicago, 111. “ Some Efficient Simplified Appliances” By Lloyd S. Lourie______—Chicago, 111. “ The Nonmechanical Treatment o f Dento­ facial Deformities” By A lfre d P. Rogers______ Boston, Mass. “Present-Day Tendencies in Orthodontic Therapy” By Herbert A. Pullen____ Buffalo, N. Y. “ Consideration o f Certain Underlying Prob­ lems in Orthodontia” By Jose J. R ojo_______________ Mexico “ The Treatment of Class II Cases” By Dr. Moritz Tischler Vienna, Austria G e n e ra l D iscu ssio n

S E C T IO N I X : M A X I L L O F A C I A L S U R G E R Y A N D S U R G IC A L P R O S T H E S IS OFFICERS OF SECTION

President: Henry S. D unning_________ New Y ork City H onorary Presidents: D r. Georges Villain___________Paris, France D r. W . Kelsey Fry______London, England D r. Fulton Risdon______ T oron to, Canada Dr. J. A . W . vanLoon___ Utrecht, H olland D r. B. Landete_____________ M adrid, Spain D r. A . Pont__________________ Lyon, France D r. Rubbrecht____________Brussels, Belgium D r. A . Meissner________ Warsaw, Poland P r o f. D r. J. Jesensky____________________ ____________________ Prague, Czechoslovakia P r o f. Dr. F. Bazant____________________ ____________________ Prague, Czechoslovakia P r o f. Dr. F. Kostecka__________________ ____________________ Prague, Czechoslovakia D r. H. Pichler_____________ Vienna, Austria D r. D elair____________________ Paris, France P r o f. D r. Partsch________Breslau, Germany Trum an W . Brophy__________ Chicago, 111. Thom as L. Gilmer____________Chicago, 111. V ice-Presidents: V. H. Kazanjian______________ Boston, Mass. M . N. Federspiel________ Milwaukee, Wis. James Graham Sharp .San Francisco, C alif. Robert H. Ivy_____________ Philadelphia, Pa. Secretaries: Leroy M . S. M iner___________Boston, Mass. W illiam L. Shearer___________Omaha, Nebr. FOREWORD

Let us pause to consider what this great meeting means to us and the w orld. The war is over, “ the tread o f marching feet is stilled,” blue sky prevails. It is summer again and we are once more turning our energies toward peace, happiness and the re­ pair o f wounds. I hope that all members and guests present and those absent will feel the warmth o f our greeting. W e Americans, your host, feel honored in having you visit our land. W e appreciate deeply our respon­ sibility in attempting to entertain you. We shall strive hard to make your visit to our shores worthwhile and to make you forget the many miles o f travel that you have en­ dured to be with us. Every nation in the w orld has learned much from the terrible suffering caused by the great conflict that

852

T h e Journal o f the American D ental Association

took place but a short time ago. World famous men from every country are here with us at this meeting' and we are most anxious to know one another, to understand one another and to learn each from the other’s experience. We are brothers, we are all striv­ ing for the same thing, the alleviation of suffering. H en ry

S. D u n n i n g .

WEDNESDAY, A U G U ST 259 a.

m.

to 12 m.

President’s Address “ Surgical Prosthesis” By Dr. Georges Villain___Paris, France “ Special Appliances for War Injuries In­ volving the Jaws” By Dr. V. Guerini________ Naples, Italy “ A System of Fixation of Obturators” By Miss J. G. Schiuringa__________ ------------------------------- Utrecht, Holland “ Prosthesis as an Aid to Surgery o f Cleft Palate” By W. Kelsey Fry____London, England “ Report on Surgery of Cleft Palate and Cleft Lip. ( a ) Lip: Complete and Incomplete Clefts, (b) Palate: Complete and Incomcomplete Clefts” (With illustrations) By Chalmers W. Lyons____________ ___________________ Ann Arbor, Mich. William H. G. Logan„.Chicago, 111. Frederick B. Moorhead Chicago, 111. Truman W. Brophy___Chicago, 111. Discussed by George M. Dorrance (M .D .)______ _____________________Philadelphia, Pa. Varaztad H. Kazanjian__ Boston, Mass. 2 to 5 p. m. “ Cysts of the Mandible and Maxillae: 1. Classification. 2. Diagnosis. 3. Treat­ ment” By Louis Schultz-------------- Chicago, 111. Morris I. Schamberg-_New York City William L. Shearer____ Omaha, Nebr. Herbert A. Potts______ Chicago, 111. Discussed by Guy R. Harrison

“ Osteitis o f the M andible and M axillae: 1. E tiology. 2. Diagnosis. 3. Treatment o f Acute and Chronic Stages” By H arold S. Vaughan..New Y ork City Matthew N. Federspiel___________ ________ „______________ Milwaukee,, Wis. Leroy M . S. M iner____ Boston, Mass. “ Facial Restorations” By S. A . T . C oxon _____________ England T H U R S D A Y , A U G U S T 26 9 a. m. to 12 m. “ Fractures o f the M andible: 1. Classification. 2. Diagnosis. 3. Treatment” By A dolph Berger______ New Y ork City Carl W . W aldron„M inneapolis, Minn. Robert H. Ivy______ Philadelphia, Pa. “ Practical Methods o f Orthopedic Treatment in Fractures o f the M andible” By P rof. Alexander Linberg__________ ______________________ Leningrad, Russia Discussed by Thom as L. Gilmer__________Chicago, 111. “ Facial Neuralgia, Original Treatment” By D r. B. Landete_______ M adrid, Spain “ Unilateral Deformities o f the Low er Jaw Due to Childhood Injuries” By Varaztad H. Kazanj ian„Boston, Mass. 2 to S p. m. “ Principles o f Plastic Surgery o f the Face: 1. Types o f Flap. 2. Preparation and Planning. 3. Methods o f Transferring and Applying. 4. After-C are” By Joseph E. Sheehan ( M . D .) _______ _________________________ New Y ork City John S. Davis ( M . D .) ___________ ________________________ Baltimore, M d. Ferris Smith ( M . D .) _____________ ____________________ Grand Rapids, Mich. Clarence A . M cW illiam s (M .D .) _________________________ New Y ork City “ Plastic Surgery” By H. D . Gillies______ London, England “ Tem porom andibular Ankylosis: 1. Etiology. 2. Diagnosis. 3. Treatment” By Fulton Risdon_____T oron to, Canada “ M ethod o f Lengthening the Horizontal Part o f the Mandible in Cases o f Asymmetry, Caused by Unilateral M icrogeny” By P rof. Alexander Linberg__________ ______________________ Leningrad, Russia

The Philadelphia Session

“ Surgery of the Temporomandibular Articu­ lation” By Leon Dufourmentel___Paris, France Leon Frison___________Paris, France “ Ankylosis o f the Jaws, Original Treatment” By Dr. B. Landete______ Madrid, Spain “ Surgical Correction of the Protrusion of the Upper Jaw” By Dr. F. Kostecka_______________ _______________ Prague, Czechoslovakia “ Surgical and Orthopedic Treatment of Prognathism and Micrognathia” By Prof. Christian Bruhn_____ Germany

853

T he horizon o f knowledge in this branch o f dental science has been broadening rapidly in late years. Dentists need no longer look on periodontoclasia as an incurable disease. The officers o f this section believed that, under these circumstances, the least that they could do was to present a program which would accurately delineate every phase o f this com­ plex problem. It is not too much to say that such a program has been prepared. T he officers o f Section X extend a fraternal greet­ ing to all who feel an interest in this subject.

“ Plastic Surgery in Defects o f the Mandible” By Dr. Hans Pichler____ Vienna, Austria SECTION X :

PERIODON TIA

OFFICERS OF SECTION

President:

Paul R. Stillman__________ New York City Honorary Presidents:

Dr. Maurice Roy___________ Paris, France Dr. Leon Frison____________ Paris, France Dr. Eugene Dubeau___ Montreal, Canada Prof. Dr. F. Egger____Berne, Switzerland Dr. A. E. Rowlett_____Leicester, England Dr. A. J. McDonagh____ Toronto, Canada Dr. Emil Schulz__ Prague, Czechoslovakia Dr. Robert M. Fox______Toronto, Canada Dr. G. Aasgaard_________ Bergen, Norway Prof. Dr. Otto Loos_________________ ________ Frankfort-on-the-Main, Germany Dr. Choquet________________ Paris, France Prof. Dr. Robert Neumann____________ ------------------------------------ Berlin, Germany Dr. Victor A. Vera______ Paraguay, S. A. J. D. Patterson________Kansas City, Mo. Austin F. James_____________ Chicago, 111. J. O. McCall ___________ Buffalo, N. Y. V ice-Presidents:

C. H. Schott---------------------Cincinnati, Ohio Clyde M. Gearhart_____Washington, D. C. J. Herbert Hood________ Cleveland, Ohio Secretaries:

Gillette Hayden_________ Columbus, Ohio Grace Rogers Spalding..Birmingham, Mich. FOREW ORD

The Section on Periodontia will be the medium for the presentation o f all available authentic information in the field o f the diag­ nosis and treatment o f periodontal disease.

Benjamin Franklin’s grave. M any distinguished visitors from foreign lands are to come f o r the purpose o f present­ ing to the w orld through Section X their studies, based upon research. These and all other confreres visiting this country, we bid a cordial welcome. T he inform ation to be presented is authentic. T h e scientific aspects o f the subject w ill be adequately presented. Treatment in all its phases, as practiced by those most successful in this field, w ill be fu lly described. Collateral subjects, dealing with sources o f irritation to the periodontal tissues, w ill also receive due consideration. In short, no effort has been spared to provide a program complete from both the practical and the purely scientific standpoints. P a u l R . St il l m a n .

854

The Journal of the American Dental Association

MONDAY, AUGUST 23 10 a. m. to 12 m. President’s Address: “ The Contribution of Periodontia to Preventive Dentistry” “ The Influence of the Growth o f Bone on the Arrangement of Teeth and Its Rela­ tion to Periodontal Disease” By Mr. J. G. Turner—-London, England “ The Variation in Cell Response to Injury of the Periodontal Tissues” By Benjamin Tishler______ Boston, Mass. Discussed by Arthur H. Merritt_____ New York City “ Calculation of the Size o f Gingival Pockets in Periodontoclasia” By Prof. A. Cieszynski___Lwow, Poland “ Ultraviolet Radiation” By A. A. Rowlett___Leicester, England Discussed by Frederick W. Lake________ Boston, Mass. “ Pyorrhea Alveolaris” By Prof. Hans Seidel-Marburg, Germany Dr. Widman’s Surgical Treatment o f Pyor­ rhea Alveolaris” By Dr. G. Aasgaard___Bergen, Norway 2 to S p. m. “ What is the Action o f the Ameba in the Etiology o f Pyorrhea Alveolaris” By Prof. Dr. Mamlock Berlin, Germany Discussed by M. T . Barrett________ Philadelphia, Pa. “ Etiology of Pyorrhea” By B. Gottlieb________ Vienna, Austria “ Research on the Etiology o f Pyorrhea” By F. V. Simonton.—San Francisco, Calif. Discussed by Walter Adrion_______ Berlin, Germany Russell W. Bunting_Ann Arbor, Mich. Edward H. Hatton_______Chicago, 111. “ Pathology, Etiology and Treatment of Pyorrhea” By Dr. F. L. Burnett_______________ ______________ Buenos Aires, Argentina “ Radiographic Diagnosis o f Rarefying Peri­ cementitis Fibrosa” By Robert M. Box____Toronto, Canada Discussed by Howard R. Raper—Albuquerque, N. M.

“ Tissue Changes and Repair of Supporting Structures o f the Tooth” By Alfonse Lang_____ Cincinnati, Ohio Discussed by Charles E. Sutton..... — Toronto, Canada “ Etiology and Nature of Pyorrhea Alveolaris” By Maurice Roy_________ Paris, France TUESDAY, AUGUST 24 9 a. m. to 12 m. The Principles of Practice in Periodontia “ Examination and Case Records” By Elmer S. Best___Minneapolis, Minn. “ Etiology and Diagnosis” By Thomas B. Hartzell____________ ---------------------------- Minneapolis, Minn. “ Aims and Results of Periodontal Treatment” By Austin F. James________Chicago, 111. “ The Sequence o f Steps in Treatment” By M. H. Garvin____Winnipeg, Canada “ Root Surgery” By Julian Smith-------------- Dallas, Texas “ Soft Tissue and Bone Surgery” By F. W. Merrifield_______Chicago, 111. Correlation o f reports by Arthur H. Merritt____ New York City 2 to 5 p. m. “ The Clinical Significance o f Atrophy o f the Alveolar Process” (Illustrated) By Hugh W. MacMillan__________ --------------------------------- Cincinnati, Ohio Discussed by Paul R. Stillman_______ New York City “ Experience with Inava Vaccine in the Treat­ ment of Pyorrhea” By Eudore Dubeau___Montreal, Canada Discussed by I. Hirschfeld___________New York City “ The Indication for the Different Therapeu­ tic Methods in the Treatment o f Paradontosis” By Dr. Hans Sachs____Berlin, Germany “ Gingivectomy Versus Radical Operation” By Prof. A. Cieszynski.—Lwow, Poland

855

The Philadelphia Session W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. H ow the Factors o f Irritation to the Perio­ dontium M ay Be Eliminated in Dental Restorations

“ T h e Value o f Dental Prophylaxis and the W ork o f the Dental Hygienist in Preven­ tive Dentistry” By H arold J. Leonard________________ _____________________ Minneapolis, Minn.

“ Reducing Periodontal Irritation to a M in i­ mum when Using Partial Restorations” By Walter F. Chappelle._Buffalo, N. Y .

“ T he Value o f Dental Prophylaxis in Early Childhood” By M . Evangeline Jordon____________ _____________________ Los Angeles, C alif.

“ Some Common Defects in Operative Res­ torations Which Contribute to the Injury o f the Supporting Structures” By A lvin Wesley B ryan-Iow a City, Iow a

“ A Consideration o f So-Called Periodontal Nomenclature” By L. Pierce Anthony__._Philadelphia, Pa.

“ Functional Freedom Necessary f o r the Health o f Abutment Teeth in Bridge and Saddle Restorations” By Edward B. Spalding_____________ _____________________ Birmingham, M ich. “ Disturbance o f Function o f the Periodontal Tissues and T h eir Sequelae” By James Kendall Burgess___________ _______________________ —New Y ork City “ Reconstruction f o r Preventing G ingival Irritation o f Especial Value in Periodontia” By T h eodore W . Maves .Cleveland, Ohio “ M ov in g Malposed Teeth into Proper Rela­ tion to Lines o f Stress and Establishing a Balanced Occlusal Relation by Mechanical Restorations” By O. DeForest Davis________________ _____________________ Minneapolis, M inn. Correlation o f reports by H. E. Friesell___________ Pittsburgh, Pa. T H U R S D A Y , A U G U S T 26 9 a. m. to 12 m. Practical Measures Employed and the M an­ agement o f Cases in Dental Prophylaxis “ T he Dental Hygienist” By E. M elville Quinby___ Boston, Mass. “ Oral Prophylaxis as Practiced—-A Failure or a Success” By Robin Adair____________ Atlanta, Ga. “ Immunizing M outh Tissues Both Hard and S oft to Infection by Correct Stimulation with the Toothbrush” By W . J. Charters___ Des Moines, Iow a “ Fundamentals o f Dental Prophylaxis” By Grace Rogers Spalding___________ _____________________ Birmingham, M ich.

Discussed by Rodriguez Ottolengui. - New Y ork City John Oppie M cC a ll____ New Y ork City F. V. Simonton____ San Francisco, C alif. “ T he Measure o f Success in Periodontia Treatment” By John Oppie M cC a ll-N ew Y ork City Discussed by Russell B. M acfarlane_____Boston, Mass. H arold J. Leonard—-Minneapolis, M inn.

2 to 5 p. m. “ T h e Importance o f the Gingivae in Prac­ tical Dentistry” By Dr. G. Lind___ Amsterdam, H olland “ T h e Duty o f the General Practitioner and o f the School Dentist in the Prophylaxis o f Dental Malpositions and M axillary M alform ations” By Dr. Georges V illain ___ Paris, France “ T h e Hygiene o f the M outh” By M ildred W . Dickerson____________ ______________________ Washington, D . C. Discussed by Anna V. Hughes and C. B. Fowlkes.— ________________________ New Y ork City S E C T IO N X I j M O U T H H Y G IE N E , P R E V E N T IV E D E N T I S T R Y A N D P U B L IC H E A L T H O FFICERS OF SECTION

President: H. J. Burkhart___________ Rochester, N. Y . H onorary Presidents: P rof. D r. Ernst Jessen—.Basel, Switzerland Dr. A . L. J. C. VanHasselt____________ ______________________ T h e Hague, H olland Dr. George Kerr T h om p son -H a lifa x, N. S. D r. W allace Seccombe___ T oron to, Canada

856

The Journal of the American Dental Association

Dr. Walter Harrison___Brighton, England Dr. Bousquet____________ Besanon, France Dr. A. Piperno_____________ Rome, Italy Dr. John Nilsen___________ Oslo, Norway Dr. J. S. Bruske_____ Amsterdam, Holland Dr. C. Lind________ Amsterdam, Holland Dr. F. Trauner___________Vienna, Austria Dr. Kieffer___________ Strasbourg, France Prof. Z. Urbanska-Filipowiczowa______ ________________________ Warsaw, Poland Mr. Bryan J. Wood____ London, England Thomas Alexander Forsyth__ Boston, Mass. George Eastman_________ Rochester, N. Y. V ice-Presidents:

Alfred C. Fones___ Bridgeport, Harold DeWitt Cross_______ Boston, Herbert L. Wheeler_____ New York Charles H. Oakman________Detroit,

Conn. Mass. City Mich.

Secretaries:

Guy S. Millberry____ San Francisco, Calif. E. L. Pettibone____________ Cleveland, Ohio FOREWORD The president of this section, on behalf of the officers of the Congress, and his associates in the preparation of this program, takes this opportunity of extending a hearty welcome to those who, by their presence and contribu­ tions, will make a success of the aims and ideals of this section. It will be observed from the program that the activities o f every department of Section XI have been covered, and papers and reports on the various divi­ sions will be given by the leaders o f the profession from abroad and in our own country. The Congress is to be congratulated upon the fact that they will have the oppor­ tunity of extending a personal greeting to many distinguished colleagues from other countries, who have done pioneer work and rendered outstanding service in mouth hy­ giene and preventive dentistry. It will be our endeavor to make their stay as enjoyable and pleasant as possible, and have them feel the warmth of our appreciation of their splendid service, covering in many cases a long period of years, under most trying and difficult circumstances. If is also a pleasure to express a word of deep appreciation to the members from our own country, whose names appear on the program, for their cooperation and assistance. H. J. Burkhart.

T U E S D A Y , A U G U S T 24

2 to S p. m. President’ s Address “ Advantages and Disadvantages o f Social Hygiene Institutions in Germany” By D r. Fritz Schaeffer-Stuckert______ _______ Frankfort-on-the-M ain, Germany “ Considerations on Oral Hygiene from an International Standpoint : Summarizing Report on the Activities o f the Hygiene Commission Fédération Dentaire Interna­ tionale” By D r. J. S. Bruske-Amsterdam, Holland “ T he Tasks and Aims o f the Hygiene Com­ mission o f the Fédération Dentaire Inter­ nationale, with Proposals Passed by the Hygiene Commission in Session in Geneva, 1925” By P r o f. D r. Ernst Jessen____________ ______________________ Basel, Switzerland “ Oral Hygiene in Japan” By D r. Yoshio M ukai_____T ok y o, Japan W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. “ School Dentistry in H olland, Its System and Results” By D r. A . L. J. C. VanHasselt______ -------------------------------T h e Hague, Holland “ Statistics o f Dental Caries” By D r. Conrad Cohn__ Berlin, Germany “ Industrial Dental Clinics in Great Britain” By D r. W illiam H. Shipway__________ -------------------------------------- Bristol, England “ Industrial Dentistry” By E. L. Pettibone--------- Cleveland, Ohio “ Prenatal and Preschool Dental Attention in Iowa Under the Sheppard-Towner A ct” By George H. W andelL Iow a City, Iowa “ Results o f Eight Years o f Oral Hygiene in the Public Schools o f West Virginia” By G. T . Epling.________ W elch, W . Va. 2 to 5 p. m. “ T he Historical Development o f Oral H y­ giene” By P rof. Dr. Ernst Jessen___________ ______________________ Basel, Switzerland

N e lv ille S. H o f f A n n A r b o r , M ic h . H o n o r a r y P re sid e n t

E u g e n e H . S m ith B o s t o n , M ass. H o n o r a r y P re s id e n t

D e L o s L . H ill A tla n ta , G a. S ecreta ry

F. R . H e n s h a w In d ia n a p o lis , I n d . S e cretary T h o m a s J. B a rrett W o r c e s t e r , M ass. P re s id e n t

F. T . B reen e I o w a C ity , I o w a V i c e P re sid e n t

A lfr e d O w r e M in n e a p o lis , M in n . V ic e P re s id e n t

W illia m R ic e B o s t o n , M ass. V i c e P re s id e n t

Officers o f the Section on Dental Education, Seventh International Dental Congress, Philadelphia, Pa., Aug. 23-27, 1926.

858

The Journal of the American Dental Association

“ Dental Hygiene in French Schools” By D r. A . Blatter__________Paris, France “ Conductive Lines on the Dental Treatment o f Children” By D r. Tandlaege E. Haderup_______ ___________________Copenhagen, Denmark “ Dental Health Activities in Canada” By Fred J. Conboy_____ T oron to, Canada “ T h e Origin and History o f the Dental Hygienists’ M ovem ent” By A . C. Fones------------ Bridgeport, Conn. “ T he Treatment o f Exposed and Pulpless Deciduous Teeth” By Charles A . Sweet___ Oakland, Calif. “ T h e Care o f Children’ s Teeth in the Schools o f Poland” By D r. H. Allerhand____ L w ow , Poland

TH U R SD A Y, A U G U S T

26

9 a. m. to 12 m. “ Public and Academic Hygiene in Switzer­ land” By D r. F. Piguet— Geneva, Switzerland “ T h e Care o f Children and Adults in Germany” By D r. Konrad Cohn._Berlin, Germany “ Common Dental Care in N orw ay” By D r. John Nilsen_______ Oslo, Norway “ T h e Financing o f School Clinics” By Guy S. M illberry_________________ -------------------------------San Francisco, Calif. “ Public Health” By Richard A . B olt____ Berkeley, Calif. “ T he Dental Hygienist in Private Practice, in Public School Service and in Institu­ tional W ork ” By Edith M . H ardy___ Rochester, N. Y . “ Result o f T h orou gh Dental W ork by School Dental Clinics” By Madelyn W illiams___ W elch, W . Va. f2 m. to 2 p. m. Oral Hygiene Luncheon 2 to J p. m. “ T he Present State o f Oral Hygiene in Japan” By D r. Mitsuru Okada___ T o k y o , Japan “ State Management o f M outh H ygiene” By C. J. Hollister_______ Harrisburg, Pa.

“ T h e History o f the Oral Hygiene M ov e­ ment in Cleveland” By Harris R. C. Wilson__Cleveland, Ohio “ T h e Train in g o f the Dental Hygienist” By H arold J. Leonard________________ _____________________ Minneapolis, Minn. “ Children’s Dentistry” By M . Evangeline Jordon __________ _____________________ Los Angeles, Calif. “ Dental Hygiene in the Health Program o f the Public School” By Charles H . Henshaw_____________ ______________________ Des Moines, Iowa “ Report o f the Forsyth Dental Infirmary” By H arold D eW . Cross___ Boston, Mass. “ Report o f Rochester Dental Dispensary” By Harvey J. Burkhart Rochester, N. Y. “ Clinics and Demonstrations on Children’ s Dentistry’ ” By T . P. Hyatt________ New Y ork City James M . Prime— ____ Omaha, Nebr. Clinics and demonstrations by dental h ygien -, ists Public Health Exhibit S E C T IO N X I I :

DENTAL EDUCAT IO N

OFFICERS OF SECTION

President: Thomas J. Barrett________ Worcester, Mass. H onorary Presidents: D r. Floristan A guilar________ M adrid, Spain Dr. W . H. Gilm our.—Liverpool, England Dr. Konrad Cohn_______ Berlin, Germany D r. Ch. T . L. N ord —The Hague, Holland D r. A . W . T h orn ton ___ Montreal, Canada D r. Morinosuke Chiwaki___ T ok y o, Japan D r. John S. Burnett.M ontevideo, Uruguay D r. M . Okada________________T ok y o, Japan D r. Augustin Larrauri___________Argentina D r. Santiago Sartori______________ Uruguay N elville S. H off________ Ann Arbor, Mich. Eugene H. Smith_____________ Boston, Mass. ■ John H. Kennerly____St. Petersburg, Fla. (Deceased) Vice-Presidents: F. T . Breene____:_______ Iow a City, Iowa A lfred Ow re_________ Minneapolis, Minn. W illiam Rice_________________ Boston, Mass. Secretaries: DeLos L. H ill________________ Atlanta, Ga. F. R. Henshaw__________Indianapolis, Ind.

The Philadelphia Session FOREW ORD

T he extend o f the sire to

officers o f the Section on Education most cordial greetings, to each and all essayists contributing. T h ey also de­ express their feelings o f deep appre­

ciation f o r the very valuable cooperation they have received from the leading dental educa­ tors in this and the many foreign countries that are represented on this exceptionally fine program. The progress o f dental education in this country during the past five years has been most remarkable and inspiring. Dentistry has become more effective in its methods o f pro­ moting health; more esthetic in its develop­ ment o f the fine arts; more cultural in its training and in its ability to inspire and develop higher ideals in its students. This development and improvement in dental methods and teaching has been brought about largely by the active work o f the recognized dental schools, and the universities o f which they are a part. T h ey have had the active and able assistance as well as the sympathetic efforts o f the national bodies to whom have been entrusted the dental educational problems. T he deep interest and broad public apprecia­ tion o f our professional endeavors to stimu­ late a closer relationship between clinical dentistry and clinical medicine merits at this time our best efforts, to hasten its accomplish­ ment. No doubt wise counsel and inspiring methods to this end w ill be developed during this Congress and through this assemblage o f the w orld’ s forem ost dentists. T o make den­ tistry the fu ll health service equivalent o f any other specialty o f medicine is our primary duty. W e feel that a w ord o f appreciation is appropriate and particularly fitting at this time, before this Section on Education, to the Carnegie Foundation fo r the advancement o f teaching and to their special representative, D r. W illiam J. Gies. This stimulus that dental education has received in the epochmaking effort to place dentistry on a plane o f academic and scientific equality with any and all medical specialties has been the great­ est forw ard step in all dental history. W e feel that the gratitude o f the entire dental w orld is due them fo r what has been accomplished. With our hearts filled with cordial good wishes we bid our guests from abroad a most hearty welcome and trust that much o f edu­

859

cational value fo r our mutual progress and welfare w ill be the result o f this Seventh International Dental Congress. T

homas

J. B ar r e tt .

M O N D A Y , A U G U S T 23 10 a. m. to 12 m. President’ s Address “ T h e Eventful Dental Curriculum” B y Henry L. Banzhaf.—Milwaukee, Wis. “ T h e Importance Education”

of

Fine A rt

in Dental

By W illiam J. Gies______New Y ork City “ Comments on the Carnegie Survey o f Den­ tal Education” r By A lfre d Ow re......Minneapolis, Minn. 2 to 5 p. m. “ Dental Health Education” By Dr. W illiam Guy_________________ ____________________ Edinburgh, Scotland “ Dental Education in England” By Dr. W illiam H. Gilm our________ _____________________ Liverpool, England “ Recent Progress in the Dental Legislation and Education in Japan” B y Dr. Morinosuke Chiwaki________ ___________________________ T ok y o, Japan “ The Actual Condition o f Dental Education in the W orld ” By Dr. Georges Villain___ Paris, France TU E SD A Y , A U G U S T 24 9 a. m. to 12 m. “ T he Minimum Basic Train in g fo r the Prac­ tice o f M edical Specialties, Including Dentistry” By Guy S. M illberry_________________ ____________________ San Francisco, Calif. “ The Proportion o f M edical and Dental K nowledge in the Dental Curriculum” By Dr. C. F. L. N ord_______________ ____________________T h e Hague, H olland “ Examinations o f Psychotechnic Qualifica­ tions in Dental Students” By P rof. Dr. W ilhelm D ieck ________ _________________________ Berlin, Germany “ The Educational Council in the Colleges” By Frederic R. Henshaw_____________ ________________________Indianapolis, Ind.

The Journal of the American Dental Association

860

2 to 5 p. m. “ Usefulness o f the Course on Dental Instru­ mentation” By Emile Huet________Brussels, Belgium “ Teaching' o f Preventive Dentistry to Under­ graduates” By George Kerr T h o m p s o n __________ _____________________ .. H alifax, N. S. “ T he Importance o f Hygiene and Public Health in the Dental Curriculum” By W illiam Rice_________ Boston, Mass. “ Clinical Education fo r the Dental Student” By E. A . Rogers________Iow a City, Iowa “ Exhibit o f Educational Films o f Animated Drawings Used in the Dental School o f Paris” By Dr. Georges Villain___ Paris, France S E C T IO N X I I I :

D E N T A L L E G IS L A ­ T IO N

OFFICERS OF SECTION

President: R. J. Rinehart___________ Kansas City, M o. H onorary Presidents: D r. F. Schaeffer-Stuckert----------------------________ Frankfort-on-the-M ain, Germany D r. Fourquet________________Paris, France Dr. Jesus T . Fregoso_______________ M exico Dr. Marquis de los Delicias .M adrid, Spain Dr. Fritz Linnert____ Nürnberg, Germany D r. Ivar K rohn_____________ Oslo, Norw ay D r. Brodhurst____________LeVesinet, France D r. de Croes__________________ Paris, France M r. J. H. Babcock______London, England D r. Augusto Coelhoe Souza________ Brazil Albert L. M idgley________ Providence, R. I. Homer C. B row n __________ Columbus, Ohio T . A . Broadbent______________ Chicago, 111. Vice-Presidents: G. W alter Dittmar__________Chicago, 111. Frank O. Hetrick___________ Ottawa, Kan. J. H. Baldwin________________Louisville, Ky. Secretaries: H. C. M cK ittrick______ Indianapolis, Ind. W . F. W a lz ________________ Lexington, K y. FOREW ORD

T h e Section on Dental Legislation desires, at this time, to express its p rofou n d gratitude to all essayists and speakers f o r their keen interest and willingness to serve in any capa­ city in order to make the Congress a success. Section X III deals with a most important

phase o f our professional life. Law is the basis o f all security and stability in every relation o f our human experience, and dental legislation, therefore, means much to the members o f our profession. In the program here presented, we have endeavored to cover every phase o f the subject in a manner which would prove o f the greatest interest to the members o f the Congress. R . J. R i n e h a r t . W E D N E S D A Y , A U G U S T 25 9 a. m. to 12 m. President’ s Address “ U niform ity o f Dental Laws” By Alphonso I r w in ______ Camden, N. J. Discussed by George L. Powers ............ Memphis, Tenn. H. L. Wheeler__________ New Y ork City “ Dental Legislation in Spain” By D r. Floristan A gu ila r____________ ------------------------------------------ M adrid, Spain “ T he Public Dental Standard in N orw ay” By D r. Ivar K ro h n _______ Oslo, Norway 2

to S p. m.

“ Some Important Questions W hich Should Be Considered in Connection with Proposed Legislation” By Homer C. B ro w n ___ Columbus, Ohio Discussed by Clyde M . Gearhart— Washington, D . C. Robert R. G illis _________Hammond, Ind. H. W ood Campbell_________ Suffolk, Va. “ Legislation as Related to Dental Health in Public Schools and Institutions” By Harris R. C. Wilson „Cleveland, Ohio Discussed by W illiam F. Whalen__________ Peoria, 111. Frank O. Hetrick________ Ottawa, Kan. “ Advantages and Disadvantages o f Social Hygiene Legislation in Germany” By P rof. F. Schaeffer-Stuckert Germany T H U R S D A Y , A U G U S T 26 9 a. m. to 12 m. “ Legislation to Regulate Dental Practitioners Operating Lender Corporate Name” By Thomas E. Purcell Kansas City, M o. Discussed by G. W alter Dittmar__________Chicago, 111. J. G. Hildebrand_______ W aterloo, Iowa

Officers of the Section on Dental Legislation

T . A . B roadbent C hicago, 111. H on orary President

A lbert L. M idgley Providen ce, R . I. H on orary President H om er C . B row n C olum bus, O h io H on orary President

W . F. W alz L exin gton, Ky. Secretary

H. C. M cKittrick Indianapolis, Ind. Secretary R . J. Rinehart Kansas City, M o. President

G. W alter Dittmar C hicago,III. V ice President

' ■x#/-...S' Frank O . H etrick Ottawa, K a n . V ice President

J. H . B aldw in Louisville, K y . V ice President

Officers o f the Section on Dental Legislation, Seventh International Dental Congress, Philadelphia, Pa., A ug. 23-27, 1926.

The Journal of the American Dental Association

862

“ Legislation to Regulate A ll Advertising Dentists” B y T . A . Broadbent_______ Chicago, 111. Discussed by Guy S. M illberry—_San Francisco, C alif. W illiam F. W a lz _______ Lexington, Ky. “ General and Private Dental Organizations in Germany” B y D r. A . Schelle____Cassell, Germany 2 to J p. m. “ Legislation to Regulate Dental Hygienists” B y Harvey J. Burkhart-Rochester, N. Y. Discussed by H ugh G. Tanzey_____ Kansas City, M o. F . R. Henshaw_______ Indianapolis, Ind. “ Advantages and Problems o f National Reci­ procity” B y Em ory A . Bryant—-Charleston, S. C. Discussed by L . L. Barber_______________T o le d o , Ohio M . D. H uff________________ Atlanta, Ga. “ T he Present State o f the D ai Nippon Dental Association (T h e Japan Dental Associa­ tion ) ” B y D r. Mitsuru Okada----- T ok y o, Japan “ Jurisprudence” B y D r. Gesus T . Fregoso-------------- M exico S E C T IO N X I V :

M IL IT A R Y S U R G E R Y

O FFICERS OF SECTION

President: Robert T . Oliver------------------ New Y ork City H onorary Presidents: D r. E. H ockenjos______ Basel, Switzerland P r o f. D r. Christian Bruhn--------------------______________________ Düsseldorf, Germany D r. Boudy____________________ Paris, France D r. Bruschera ____________ Paris, France D r. Luis de la Barra Lastaria---------------Chili Em ory A . Bryant_________ Charleston, S. C. James P. Harper---------------------St. Louis, M o. W . A . Heckard_________ —.New Y ork City Vice-Presidents: Rex H. Rhoades_________ Washington, D . C. H. E. Harvey___________ Washington, D . C. C. W . M ills______________ Chillicothe, Ohio Secretaries: John L. Peters_______________ New Y ork City W . L. Darnall___________ Washington, D . C.

M O N D A Y , A U G U S T 23 10

a. m. to

12

m.

President’s Address: “ M ilitary Dental gery”

Sur­

“ T he Treatment o f Gunshot Fractures o f the Jaws, with Large Loss o f Soft and Bony Tissue” (Illustrated) By Fulton Risdon______T oron to, Canada “ Radiography in the Face, Jaw and Dental Surgical Service o f M ilitary Hospitals in the Theater o f Operations” (Illustrated) By G. R. Harrison________ Richmond, Va. “ Orthodontic Principles in M ilitary Dental Surgery” (Illustrated) By Joseph D . Eby______ New Y ork City 2 to 5 p. m. “ M ilitary Training in Dental Education” By A lfre d Owre___ Minneapolis, Minn. “ Correction o f Deform ities o f Face and Jaws Resulting from W ar Injuries” (Illus­ trated) By Robert H. Ivy_______ Philadelphia, Pa. “ Coordination o f Dental and M edical Service in the Treatment o f Battle Casualties” By V. P. Blair-------------------St. Louis, M o. “ Dental Service in the Zone o f the Advance” By C. F. M cD on ald____ New Y ork City “ Dental Research Studies in the Arm y” By F. E. Rodriguez— Washington, D . C.

TUESD AY, A U G U S T 24 9 a. m. to 12 m. “ Adaptation o f M ilitary Surgery to Civil Practice” By Rea Proctor M cGee—-Pittsburgh, Pa. “ W ar-Tim e Obligations o f the American Den­ tal Profession” By Charles F. Ash----------- New York City “ T he Dental Service at M obile and Evacua­ tion Hospitals” By W . C. Speakman— W ilm ington, Del. “ Dental Research Studies in the Navy” By H. E. Harvey.— Washington, D . C. “ W ar Injuries to the Upper Part o f the Face” (Illustrated) B y V. H. Kazanjian--------- Boston, Mass.

The Philadelphia Session

863

2 to 5 p. m.

FOREW ORD

“ M a xillofa cia l Surgical Team s; from the Point o f View o f a Dental Mem ber” By Leo W inter__________New Y ork City

Section X V , on History, Science and Libra­ ries, makes its initial bow to members o f the Seventh International Dental Congress. W hile these subjects have, o f course, received due consideration at previous meetings, this is the first time they have been so grouped and placed under one section. It seems fitting, perhaps, that this section should appear as the final one in the group o f fifteen, inasmuch as history cannot be recorded until it has actually taken place, nor can libraries assume documentation until works have been written. A study o f our preliminary program w ill show that we have been fortunate in securing what we believe to be a remarkable group o f essayists, as regards, first, their scientific attainments, and second, the cosmopolitan character o f the entire personnel. A t least ten countries are represented, and each has delegated the man believed to be best qualified to present his particular subject. It is with great pleasure and pride that Section X V welcomes to its program the men o f these various countries and we look forw ard with keen anticipation to being the hosts to these notable visitors. Our program to date in­ cludes seven papers dealing with general historical or scientific subjects; seven covering specifically the dental history o f as many countries, and fou r reports from F . D . I. commissions on subjects embraced by the section. A l f r e d P. L e e .

“ Organization o f Dentists in the Swiss A rm y” By P r o f. D r. E. Hockenj os----------------________________________ Basel, Switzerland Symposium— Reports on the M ilitary Den­ tal Service, by official representatives o f six nations.* S E C T I O N X V : H I S T O R Y , S C IE N C E A N D L IB R A R IE S OFFICERS OF SECTION

President: A lfre d P. Lee____________ Philadelphia, Pa. H onorary Presidents: D r. Andres G. W eber______Havana, Cuba D r. Emile H u e t________ Brussels, Belgium M r. Robert Lindsay______ London, England M r. Bryan J. W o o d _____ London, England D r. V . Guerini_______________Naples, Italy D r. Charles L. Bouvier--------------------------________________________ Geneva, Switzerland D r. Georges Viau___________ Paris, France D r. Em il Steinschneider____Vienna, Austria D r. Albert Joachin________Brussels, Belgium D r. E. R. Aldecoa______________________ ________________ Manila, Philippine Islands P r o f. D r. W . Hess____ Zurich, Switzerland P r o f. D r. Christian Greve--------------------________________________ Erlangen, Germany Edward C. K irk________ Philadelphia, Pa. W illiam H. Trueman____ Philadelphia, Pa. D avid M . Cattell_____San Francisco, C alif.

W E D N E SD A Y, A U G U S T 25 9 a. m. to 12 rri. President’ s Address

Vice-Presidents: Abram Hoffm an------------------ Buffalo, N. Y . Edward C. M ills__________ Columbus, Ohio B. W . Weinberger__________ N ew Y ork City

“ T he Practice o f Dentistry and the Filipino Dentists” By D r. Eladio R. Aldecoa._Manila, P. I.

Secretaries: L. Pierce Anthony_______ Philadelphia, Pa. F. C. Friesell_______________ Pittsburgh, Pa.

“ History o f Public Dental Service in Great Britain” By Messrs. Bryan J. W ood and Robert Lindsay-----------------------London, England

♦Representatives fro m the fo llo w in g na­ tions have been form ally invited: England, France, Italy, Canada, Spain, Cuba, and the United States; the latter through the three Government services: A rm y, Navy and Public Health. Their names, grade, service and country w ill appear later, as w ill the names o f persons selected f o r discussion o f the several papers.

“ T h e Urgent Necessity o f an International Stomatologic Index o f Current Professional and Scientific Literature” By D r. Andres G. Weber__Havana, Cuba 2 to 5 p. m. “ T he Decim al Classification Applied to O dontology” By D r. Emile Huet___ Brussels, Belgium

864

The Journal of the American Dental Association

“ T h e Beginning and International Growth o f Dental Journalism” By W illiam H. T ru em a n -----------------________________________Philadelphia, Pa. “ Relation o f the F. D . I. to International Dental Congresses” By P r o f. Dr. F. Schaeffer-Stuckert.. _______ Frankfort-on-the-M ain, Germany “ T h e Dental Library— Its Past and Its Fu­ ture” By B. W . W einberger.—New Y ork City “ History o f Dentistry in England” By Messrs. Leonard Matheson and Lewin Payne__________London, England

TH U R SD A Y,oA U G U ST 26 9 a. m. to 12 m. “ History o f Dentistry in Germany” By P ro f. D r. Christian Greve________ ______________________ Munich, Germany “ History o f Dentistry in Belgium” By D r. Edm ond Rosenthal----------------________________________Brussels, Belgium

“ History o f Dentistry in Denmark” By Dr. E. Haderup___________________ -----------------------------Copenhagen, Denmark “ History o f Dentistry in Switzerland” By D r. Charles L. Bouvier.__________ —----------------------------- Geneva, Switzerland 2

to S p. m.

“ History o f Dentistry in New Zealand” By D r. Richard Dunn_______ W ellington “ Report o f the F. D . I. Commisison on T erm in ology” By Louis O ttofy___________ Chicago, 111. “ Report o f the F. D . I. Commission on Scien­ tific Research” By D r. B. Gottlieb______Vienna, Austria “ Report o f the F. D . I. Commission on D oc­ umentation : T h e Organization o f Dental Documentation” By Emile Huet_______ Brussels, Belgium “ Index o f the Periodical Dental Literature” By Arthur D . Black_________ Chicago, 111.

CLINIC PROGRAM FRIDAY, A U G U S T 27 ( T he Commercial Museum, with the excep­ tion o f Surgical Clinics in H osfitals) Herbert L. Wheeler, General Chairman----_________________________ New Y ork City Otto U. K ing, Secretary------------- Chicago, 111. W . J. Robinson, Local Chairman--------------________________________Philadelphia, Pa. A ll clinics w ill be given on Friday from a. m. to 1 2 m. and from 2 to 5 p. m. Clinicians in every instance have been selected by their respective State Advisory Committee f o r the Seventh International Dental Con­ gress or by their dental school and w ill be grouped according to states and sections wher­ ever facilities in the Commercial Museum w ill permit. Each clinic w ill be listed with its location in the Commercial Museum and numbered in a way that the Committee on Local Arrange­ ments believe w ill enable it to be most easily found. Clinicians are expected, as fa r as possible, 9

to furnish all necessary instruments and equip­ ment. No one w ill be allow ed to take orders fo r , or to sell, instruments, materials or appliances in the clinic rooms. Immediately on registering fo r the meeting, all clinicians should report fo r instructions at Clinic Headquarters in the Commercial Museum. RULES

OF T H E CONGRESS IN G CLINICS

GOVERN­

STATE CLINICS

The State Advisory Committee fo r the Seventh International Dental Congress in each state has been assigned the responsibility o f making a contribution in the form o f a clinic. T h e rules and detailed information regarding the plans fo r these clinics are as follow s : 1. Each state is to contribute twice as many clinics as it w ill have delegates in the 1926 House o f Delegates o f the American Dental Association.