중심교합위와 후방교합위 간의 편위와 습관성 하악개폐운동과의 관계에 관한 연구
A STUDY ON THE RELATIONSHIP BETWEEN THE DEVIATION OF THE INTERCUSPAL POSITION FROM THE ETRUDED CONTACT POSITION AND THE HABITUAL MANDIBULAR CLOSING AND OPENING MOVEMENTS.
송덕영, 이진규,
소속 상세정보
송덕영 ( ) - 서울대학교 치과대학 구강진단학교실
이진규 ( ) - 서울대학교 치과대학 구강진단학교실
KMID : 0355219850090010077
Abstract
The purpose of this study was to investigate the relationship between the mandibular positions and the habitual mandibular opening and closing movements in normal subject using the newly developed electric mandibular movement analyzing device. (Saphon Visi-Trainer C - U. Tokyo Shizaisha Inc. Tokyo, Japan)
One of the causes of the temporomandibular joint dysfunction has been considered abnormal mandibular positions especially the abnormal deviation between intercuspalposition from retruded contact position.
The subjects in this study were consisted of 55 young adults in 20 decade who had normal occlusion, no prosthodontic restorations and no history of disturbance or pain on temporomandibular joint and masticatory muscles.
- The results were as follows -
1. The deviations of intercuspal position from retruded contact position were 0.23m- in frontal view and 1.02mm in sagittal view.
2. The larger the deviation of intercuspal position from the retruded contact position, the higher s the proportion of uncoincidence of the habitual mandibular closing and opening trajectories was, and the proportion was higher in sagittal view than frontal view, 10mm opening than from openin&
S. Correlation between the deviation of intercuspal position from retruded contact position and uneoincidence rate of the habitual mandibular closing and opening trajectories was higher in frontal view than sagittal view.
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