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下顎骨連動時顆讀의 移動範圍에 關하여
THE NORMAL RANGE OF CONDYLAR MOVEMENT

치과방사선 1978년 8권 1호 p.43 ~ 48

소속 상세정보

최한업(崔瀚業)/Han Up Choe

KMID : 0378219780080010043

Abstract

20代正常成人의 靜止 및 開口時에 있어서의 顎關節을 X-線撮影하여 觀察한 바 다음과
같은 結果를 얻었다.
1. 最大開口時顎間距離는 46.86㎜였다.
2. rest position時에는 中心位咬合時보다 顆頭上方과 하악와의 거리가 0.8㎜增加했다.
3. 1인치 開口時顆頭는 垂線에 對하여 前方으로 12.64㎜水平移動하였고, 基準線에 對하
여 下方으로 1.84㎜移動하였다.
4. 最大開口時에는 垂線에 對해 前方으로 19.06㎜水平移動하였고, 基準線에 對해 上方으
로 0.4㎜移動하였다.
5. 中心位咬合時에는 顆頭와 하악와의 間隔은 後方이 前方보다 0.4㎜ 더 컸다.
6. 靜止時 및 開口時一般的으로 女子보다 男子에서 모든 數値가 큰 것으로 나타났다.

The purpose of this study was to investigate the normal range of condylar movement
of normal adults.
The author has observed roentgenographic images of four serial positions of condylar
head taken by modified transcranail lateral oblique projection. The serial positions are
centric occlusion, rest position, 1 inch open position and maximal open position.
The results were obtained as follow;
1. Inter-incisal distance was 46.85㎜ in maximal open position.
2. The length between the deepest point of glenoid fossa and summit of condylar head
in rest position was wider than that in centric occlusion by 0.8m%.
3. In 1 inch open position, condylar head moved forward from the standard line in
12.64㎜ of horizontal direction and moved downwards from the standard line in 1.84㎜ of
vertical direction.
4. In maximal open position, condylar head moved forward from the standard line in
19.06mm of horizontal direction and moved downwards from thestanard line in 0.4㎜ of
vertical direction.
5. In centric occlusion, the width between glenoid fossa and margin of condylar head
was greater in the posterior portion than in the anterior portion by 0.4㎜.
6. Except for the estimated figures of 1 inch open positions all of the estimated
figures was greater in male than in female.