The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지

A ROENTGENOCEPHALOMETRIC DESCRIPTION OF CLASS I MALOCCLUSION

1급부정교합(一級不正咬合)에 관(關)한 두부방사선계측학적(頭部放射線計測學的) 연구(硏究)

  • Whang, Sun-moon (Dept. of Orthodontics, Graduate School, Seoul National University)
  • 황선문 (서울대학교 대학원 치의학과 교정학 전공)
  • Published : 1979.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

In order to define what the average Class I malocclusion looks like, 72 Class I malocclusions were compared with corresponding measurements from 90 cases of normal occlusion sample. This sample was obtained from the Department of Orthodontics, Infirmary of Seoul National University. 1. SNA, Fac(NP) to SN measurements were significantly different from the normal occlusions and smaller than the normal occlusion means. 2. 'Y' axis to SN, Mandibular plane to SN, $\underline{1}$ to Occlusal plane, $\bar{1}$ to NB(linear) measurements were significantly different from the normal occlusions and larger than the normal occlusions. 3. ANB, Occlusal plane to SN, AB to Occlusal plane, $\underline{1}$ to SN, $\bar{1}$ to SN, $\bar{1}$ to Occlusal plane measurements showed no significant difference between the means.

Keywords