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Dr. Stanton's instrument for surveying the dental arch
The International Journal of Orthodontia PUBLISHED THE FIFTEENTH OF EVERY MONTH BY
THE C. V. MOSBY CO., 801-807 Metropolitan Bldg., St. Louis, Mo. Foreign Depots-Great Britai .. -Henry K impton, 263 H igh Holborn, London, W. C. ; A ustr atasia-Stirling & Co., 317 Collins Street, Modern C ha mb ers , Melbourne; I .. dia-" Practical Medicine," Egerton Street . Delhi; Porta Rico-Pedro C. Timothee, Rafael Cordero 68, San Juan, P. R. Subscription Rates-Single Copies, 30 cents. To anywhere in United States. Cuba, Porto Rico , Canal Zone , Mexico. Hawaii and Philippine Islands, 13 .00 per year in advance. Under foreign postage, 13 .40 . English price: IS/ per annum, 1/6 per number. Remittances-Remittances for subscrlptions •hould be made by check, draft, postoffice or express money order, or r egistered letter, payable to the publishers, The C. V. Mosby Company. Contrlbutlons-Th., editor will be pleased to consider the publicat.ion of ori ginal co mmunicatio ns of merit on orthodont ic and allied subjects, which must be contributed solely to th is jou rnal . Opinions-Neither the editor or the publisher hold themselves responsible for the opinions of contr ibutors, nor are the y responeible for other than editorial statements. Reprints-Requests for reprints of original articles must accom pa ny manuscript, a nd will be f urnished by the publishers at cost.
Communications-Contributed articles, illustrations, letters, and all other matter pertaining to the ed itorial department should be addressed to the Editor, Doctor Martin Dewey, 1016 East Armour Boulevard. Kansas City, Mo . All comm unlcations in regard to advertising, subscriptions, change of address, and books for review should be addressed to the publishers, The C. V . Mosby Company. 801807 Metropolitan Building, St. Louis, Mo . Illustrations-Such halftones and zinc etchings as in the judgment of the ed itor are necessary to illustrate articles will be furnished when photographs or drawings are supplied by the authors of said articles. Advertlsemen ts-e-Obiectlona ble ad vertisements will not be accepted for publication in this journal. Forms close first of month preceding date of issue. Advert.isina rates and sizes on application . Change of Address-The publishers should be advised of change of subscriber's address about fifteen days before date of issue, with bo- 'l new and old addresses given, Nonreceipt of Copies-Complaints for nonreceipt of copies or requests for extra numbers must be re ceived on or before the fifteenth of the month of publication ; otherwise the supply is apt to be exhausted.
Entered at the Post Office at St. Louis, Mo ., as Second-Class Matter.
EDITORIALS Dr. Stanton's Instrument for Surveying the Dental Arch. HAS been our privilege to examine a number of surveys, or measurements, I Tthat Dr. Stanton has made of different dental arches with the instrument he has de signed for that purpose. Those of us who have ever attempted to measure teeth in the mouth , or on the model, and make any accurate diagram of the po sition which they occupy, or the width of those teeth, will appreciate an instrument which will do that very accurately and much more easily than can be done with any instrument we have ever seen. It has been our privilege to study these measurements and study diagrams of the instrument, although we have never seen the instrument, but from surveys and me asurements which Dr. Stanton has made, we are convinced that his instrument is far superior to anything we have had before. The uses to which this instrument can be put will be limited only by the uses to which accurate measurements or drawings can be applied, Dr. Stanton and Mr. Rudolph Hanau, a mechanical engineer, have worked upon this plan of measuring the dental arches and perfecting the instrument since the fall of 1914. For those men practicing orthodontia who have been believers of Dr. Hawl ey's system of measuring the teeth and predetermining the width of the dental arch, this instrument will be a great step in advance. Although we have never believed, for various reasons which we have stated
592
The International Journal of Orthodontia.
before, that it was possible to exactly predetermine the shape of the dental arch from the measurements of the teeth, we do believe that measurements of the teeth, which are made in three dimensions, will assist in the establishment of an arch approximating the normal very accurately and will be a great advantage from a practical standpoint. In the use of the instrument, Dr. Stanton suggests making a diagram which will assist in the diagnosis of malocclusion, to show the position of .t he individual teeth, the relation of the teeth to the right and left side, the relation of the teeth to the median line, the antero-posterior relation of the teeth and the occluso-gingival relation. All of these positions can be accurately demonstrated, which has never been done before. With the use of this instrument, drawings and charts can be made of the teeth, of the cusp, central fossa, and various points of the teeth, and the dental arch can be mapped out with great accuracy, which necessarily will mean that malocclusions can be much more accurately treated than they have been in the past. While some practitioners can look at a model, or a set of teeth in malocclusion, and tell practically where each tooth should be moved, great many are not so fortunate. The measurements of the dental arch, with the drawings, will do a great deal toward improving the technic of treatment as practiced by various men. It seems that Dr. Stanton has contributed a very valuable instrument to the orthodontic profession, and we hope he will continue his researches along this line.
a
Some Disputed Points in Orthodontic Treatment. THIS issue of the Journal is a report of a case treated by Dr. H. G. I NTanzey of Kansas City, which we cannot allow to pass unnoticed because
.it tends to show some of the things we have long contended for. In speaking of the etiology of the case, Tanzey states that the early loss of the deciduous teeth was the principal factor, and we agree with him. Also, that the permanent upper molars and premolars have probably dropped forward because of the loss of approximal conta-ct and the lower arch is distal. We wish to call attention to Tanzey's statement that the malocclusion was caused by the loss of the deciduous teeth, for we have recerrtly heard the assertion made by an eminent authority that the loss ofthe deciduous teeth did not cause malocclusion, but that most cases of malocclusion were caused by nasal obstructions. While it is a fact that nasal obstructions cause many cases of malocclusion, yet on the other hand it has also had many things charged to it that it did not produce. We have long contended that the forces of occlusion make the most satisfactory form of retaining appliances that we could have, still few orthodontists have taken the force of the inclined plane into consideration as t~y should have done. Several years ago Dr. Noyes stated that the permanent retaining appliance consisted of bony spicula, which is true, but the tissues supporting the teeth depend on the normal forces of occlusion for their dev elopment. It is with a great deal of satisfaction that we notice that Dr. Tanzey recommends that the upper teeth will retain the lower ones through
THE C. V. MOSBY CO., 801-807 Metropolitan Bldg., St. Louis, Mo. Foreign Depots-Great Britai .. -Henry K impton, 263 H igh Holborn, London, W. C. ; A ustr atasia-Stirling & Co., 317 Collins Street, Modern C ha mb ers , Melbourne; I .. dia-" Practical Medicine," Egerton Street . Delhi; Porta Rico-Pedro C. Timothee, Rafael Cordero 68, San Juan, P. R. Subscription Rates-Single Copies, 30 cents. To anywhere in United States. Cuba, Porto Rico , Canal Zone , Mexico. Hawaii and Philippine Islands, 13 .00 per year in advance. Under foreign postage, 13 .40 . English price: IS/ per annum, 1/6 per number. Remittances-Remittances for subscrlptions •hould be made by check, draft, postoffice or express money order, or r egistered letter, payable to the publishers, The C. V. Mosby Company. Contrlbutlons-Th., editor will be pleased to consider the publicat.ion of ori ginal co mmunicatio ns of merit on orthodont ic and allied subjects, which must be contributed solely to th is jou rnal . Opinions-Neither the editor or the publisher hold themselves responsible for the opinions of contr ibutors, nor are the y responeible for other than editorial statements. Reprints-Requests for reprints of original articles must accom pa ny manuscript, a nd will be f urnished by the publishers at cost.
Communications-Contributed articles, illustrations, letters, and all other matter pertaining to the ed itorial department should be addressed to the Editor, Doctor Martin Dewey, 1016 East Armour Boulevard. Kansas City, Mo . All comm unlcations in regard to advertising, subscriptions, change of address, and books for review should be addressed to the publishers, The C. V . Mosby Company. 801807 Metropolitan Building, St. Louis, Mo . Illustrations-Such halftones and zinc etchings as in the judgment of the ed itor are necessary to illustrate articles will be furnished when photographs or drawings are supplied by the authors of said articles. Advertlsemen ts-e-Obiectlona ble ad vertisements will not be accepted for publication in this journal. Forms close first of month preceding date of issue. Advert.isina rates and sizes on application . Change of Address-The publishers should be advised of change of subscriber's address about fifteen days before date of issue, with bo- 'l new and old addresses given, Nonreceipt of Copies-Complaints for nonreceipt of copies or requests for extra numbers must be re ceived on or before the fifteenth of the month of publication ; otherwise the supply is apt to be exhausted.
Entered at the Post Office at St. Louis, Mo ., as Second-Class Matter.
EDITORIALS Dr. Stanton's Instrument for Surveying the Dental Arch. HAS been our privilege to examine a number of surveys, or measurements, I Tthat Dr. Stanton has made of different dental arches with the instrument he has de signed for that purpose. Those of us who have ever attempted to measure teeth in the mouth , or on the model, and make any accurate diagram of the po sition which they occupy, or the width of those teeth, will appreciate an instrument which will do that very accurately and much more easily than can be done with any instrument we have ever seen. It has been our privilege to study these measurements and study diagrams of the instrument, although we have never seen the instrument, but from surveys and me asurements which Dr. Stanton has made, we are convinced that his instrument is far superior to anything we have had before. The uses to which this instrument can be put will be limited only by the uses to which accurate measurements or drawings can be applied, Dr. Stanton and Mr. Rudolph Hanau, a mechanical engineer, have worked upon this plan of measuring the dental arches and perfecting the instrument since the fall of 1914. For those men practicing orthodontia who have been believers of Dr. Hawl ey's system of measuring the teeth and predetermining the width of the dental arch, this instrument will be a great step in advance. Although we have never believed, for various reasons which we have stated
592
The International Journal of Orthodontia.
before, that it was possible to exactly predetermine the shape of the dental arch from the measurements of the teeth, we do believe that measurements of the teeth, which are made in three dimensions, will assist in the establishment of an arch approximating the normal very accurately and will be a great advantage from a practical standpoint. In the use of the instrument, Dr. Stanton suggests making a diagram which will assist in the diagnosis of malocclusion, to show the position of .t he individual teeth, the relation of the teeth to the right and left side, the relation of the teeth to the median line, the antero-posterior relation of the teeth and the occluso-gingival relation. All of these positions can be accurately demonstrated, which has never been done before. With the use of this instrument, drawings and charts can be made of the teeth, of the cusp, central fossa, and various points of the teeth, and the dental arch can be mapped out with great accuracy, which necessarily will mean that malocclusions can be much more accurately treated than they have been in the past. While some practitioners can look at a model, or a set of teeth in malocclusion, and tell practically where each tooth should be moved, great many are not so fortunate. The measurements of the dental arch, with the drawings, will do a great deal toward improving the technic of treatment as practiced by various men. It seems that Dr. Stanton has contributed a very valuable instrument to the orthodontic profession, and we hope he will continue his researches along this line.
a
Some Disputed Points in Orthodontic Treatment. THIS issue of the Journal is a report of a case treated by Dr. H. G. I NTanzey of Kansas City, which we cannot allow to pass unnoticed because
.it tends to show some of the things we have long contended for. In speaking of the etiology of the case, Tanzey states that the early loss of the deciduous teeth was the principal factor, and we agree with him. Also, that the permanent upper molars and premolars have probably dropped forward because of the loss of approximal conta-ct and the lower arch is distal. We wish to call attention to Tanzey's statement that the malocclusion was caused by the loss of the deciduous teeth, for we have recerrtly heard the assertion made by an eminent authority that the loss ofthe deciduous teeth did not cause malocclusion, but that most cases of malocclusion were caused by nasal obstructions. While it is a fact that nasal obstructions cause many cases of malocclusion, yet on the other hand it has also had many things charged to it that it did not produce. We have long contended that the forces of occlusion make the most satisfactory form of retaining appliances that we could have, still few orthodontists have taken the force of the inclined plane into consideration as t~y should have done. Several years ago Dr. Noyes stated that the permanent retaining appliance consisted of bony spicula, which is true, but the tissues supporting the teeth depend on the normal forces of occlusion for their dev elopment. It is with a great deal of satisfaction that we notice that Dr. Tanzey recommends that the upper teeth will retain the lower ones through