- Volume 12 Issue 1
A RADIOGRAPHIC STUDY ON THE CONDYLAR DISPLACEMENT FROM CENTRIC RELATION TO CENTRIC OCCLUSION
중심위에서 중심교합으로 전위될 때의 과두의 변위에 관한 방사선학적 연구
- Rhyee In Suk (Dept. of Oral Radiology, College of Dentistry, S.N.U.) ;
- Ahn Hyung Kyu (Dept. of Oral Radiology, College of Dentistry, S.N.U.)
- Published : 1982.12.01
The purpose of this study was to investigate the normal range of condylar displacement of normal adults. The author has observed two roentgenographic images of condylar head taken by transcranial projection. Two roentgenographic images are centric occlusion and centric relation. The results were obtained as follow: 1. Total subjects are 72 condyles. The condylar displacement from centric relation to centric occlusion was shown in 65 condyles (90%) anteriorly. 59 condyles (82%) inferiorly. Two condyles (3%) showed neither anterior displacement nor inferior displacement. 2. The average displacement of right condyles was 0.54±0.06㎜ anteriorly, 0.34±0.05㎜ inferiorly. The average displacement of left condyles was 0.74±0.09㎜ anteriorly, 0.45±0.05㎜ inferiorly. 3. The subjects of synmetrical displacement are 7 cases (20%) anteriorly, 2 cases (6%) inferiorly.