The linear analyses of lateral dentofacial complex in Japanese adults by means of roentgenographic cephalometry

DEPARTMENT

OF REVIEWS Edited

All

Dangers

of

by

DR.

AND

ABSTRACTS

J. A. SALZMANN,

New

York

city

inquiries regarding information on reviews and abstracts shozlld be directed to the respective authors. Articles or books for review in this department should be addressed to Dr. J. A. Salzmann, 654 Madison Ave., New Pork 21, New Pork.

Hypnosis

By Louis J. Il’est 1965,

rind

Gordon

Il. Deckprt. J. A. 41. ‘1. 192: 9-12 (April

5),

l)espitc certain dangers to the patient,, the physician, medicine as a discipline, and hypnotism itself as a reputable body of information and methodology, hypnosis offers definite advantages when used as an adjunct to other m&hods in medicine and psychiatry, and these advantages should be preserved. The dangers can be minimized by improved and expanded research programs, more education concerning hylmosis at both the ur1dergraduat.e aald postgraduate levels in medical schools, and greater clarification of standards for its clinical use. Although the clinician should avoid overcommitment to hypnotism, hc should be prepared to employ this valuable maneuver when it use is indicated. The

linear Means

Analyses of

of

lateral

Roentgenographic

By To&&&o Sulmmoto md JIurch, 1963.

Dentofacial

Complex

in

Japanese

Adults

by

Cephalometry

Tetsuo Iizukn.. Sa.pporo Xed. J. 23: 163-177,

In orthogonal and dimensional linear measurements, the size of the skrletal structure of males highly exceeded that of females except for the S-Ptm distance. In the denture, however, the males greatly exceeded females only in mandibular dental height. In the proportional linear analyses of the skeletal structure, sexual dimorphism was found only in the proportions of the cranial length to the total facial height and of t,he ramus height to the mandibular body length. Sexual dimorphism in denture proportions was significant in the proportions of the dental arch lengths to the jaw lengths and in anterior dental height proportions. Some of the data presented in this study were compared with those of Japanese adults previously reported. Although they showed some differences, these seemed to be caused by the difference in methods of measurement and in selection of material. The skeletal and denture structures of Japanese were compared with some other racial populations with normal occlusion as well as Class I malocclusion. According to the orthogonal and dimensional linear analysts, the white persons

studied exccedcd the Japancsc in cranial length, masillary length, ant1 mandibular body lrngth. In total facial bright. .JaJxrncsc cscccdctl the w\.liii(~ sttbjcets. These findings might suggest that the .JaJ)anesc facial pattern was longer tha~t I hat of the white subjects. On the othrr hand, t ho anterior facial Ilcight J)ropoi’tion S~OWN~ no racial diffcrenec bctmcc~ti .Japaiic~e itii(l l’ttcrto Ricatts. 111 111~ denture pattern, the racial diffcrencc bctwrcn lJapancst~ itti(l white JW~SWS stttdicd was insignificant with rcspcet to posterior dental height but significant with respect to anterior tlcntal height in ttrc mandible. Further mow. ttrv raeia I diffrrcncc in proportion between the two ixccs s~mcd to 1~ significant Dental

Radiology;

a

Accessory tion

Complete,

Techniques,

Protection

illustrated the

With

the

interpretation Dental

Diagnostic

Guide of

to

Short

Dental Dose

Cone, Radiographs,

of

long

Cone, and

and Radia-

Radiation

This test prcscnts cvcry aspect of’ d(~tltal radio1og.v for the d(Jtitiil student, the dentist, and the physician. An analysis is made of the newer knowledge of radiat,ion effects with regard to health under tho impetus of atomic advances. The protective mcasurcs dcrcloped intc~rn;ltionall~ and by I’ctlcral, state, and local agencies arc prcsentcd. Part II is devoted to a “Manual of Techniyuc” which estrnds over 250 pages. Here arc explained and illustrated met hods of processing, various tcchniqucs (such as those involving the Short and long cones), Xld radiography of the child, the edentulous pa,ticnt, and the handicapped. Extraoral radiography, including that of the temporo1nandibular articulation, is illustrated. (‘ephalomctric radiography is mentioned in passing. Radiographic intcrprctation is presented in d&ail. Various abnormalities to be found in the enamel, dcntine, pulp, cemcntum, and periodontium are outlined, and discussed. Normal radiographic anatomy from birth to the illustrated, age of 25 vcars is illustrated and discussed. Anomalies of development and growth of the teeth and their diagnosis arc presented. The radiographic appearance of bone diseases is discussed and classified. Wa,inwright states: “It is impossible on the basis of presently available knowledge to know whether or not there is a threshold or safet,y level of manmade radiation to which we may be exposed with some degree of tolcrancc.” The book has an important bibliography and itn indcs. J. A. Sa,lzmnnn The

Human

Dentition

By Bertram Pebiger.

,218

pc~es,

Before

S. Kraus 267

Birth

and Rona,ld I?:. Jordan. Philadelphin, i&wstmtions. Price, $15.00.

.1.96.5, Lea d?

Previous texts on development of the human dcntition wcrc lil~gcl~ based on repetition of refercnccs, many of which datrd back to the ninctrcnth ccntuty