An Evaluation of Soft Tissue Facial Profile in Japanese Young Adults with Normal Occlusion Using Proportional Analysis

DOI 14 References
  • KISHI Shigeto
    The Nippon Dental University School of Dentistry at Tokyo, Department of Preventive and Community Dentistry
  • NIWA Moto
    The Nippon Dental University School of Dentistry at Tokyo, Department of Preventive and Community Dentistry

Bibliographic Information

Other Title
  • 比率分析による日本人正常咬合者の軟組織側貌評価について

Search this article

Abstract

Lundstrom et al. described standard values for young Swedish adults with normal occlusion using soft tissue analysis with a natural head position. The purpose of the present study was to determine the standard reference values of young Japanese adults with normal occlusion using the same method of analysis as Lundstrom. The examiner obtained values for 11 indices (8 horizontal, 2 vertical and 1 horizonal/vertical) from the facial profile photographs of dental school students who had not undergone orthodontic treatment (21 males, 18 females, average age : 23.4 years). The gender and racial differences between the Japanese values and the Swedish values derived from Lundstrom's report were tested for each index using the t-test. The values for some indices were also compared with those of Peck and Peck for American females. Gender differences for 5 indices were observed (No. 1, 2, 3, 6 and 7). The values for these 5 indices in males were 2-10 points higher than those in females. Racial differences in males for 6 indices were observed (No. 2, 3, 6, 7, 8 and 11). Four of the 6 indices in Japanese males (except No. 6 and 11) were 3-6 points higher than those of Swedish males. Racial differences in females for 5 indices were observed (No. 1, 2, 3, 6 and 7). All 5 indices in Japanese females were 4-10 points lower than those for Swedish females. Therefore, it can be concluded that Japanese males have a more prominent nose, upper and lower jaw, chin and a more eminent chin than Japanese females. There was no common Japanese-Swedish characteristic difference between the two in the comparison of males and females. Japanese females have a less prominent nose and less eminent chin than Swedes and Americans. Gender and racial differences should should be considered when using the severity scale of the soft tissue profile for estimating malocclusion.

Journal

References(14)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top