습관적 저작측에 부여한 교합장애로 인한 저작근과 흉쇄유돌근 및 하악운동변화에 관한 연구
Analysis of mandibular movement and masticatory and sternocleidomatoid muscle activity reflected by occlusal disturbance on habitual chewing side.
오정환, 최대균, 최부병,
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오정환 ( Oh Jung-Hwan ) - 경희대학교 치과대학 치과보철학교실
최대균 ( Choi Dae-Gyun ) - 경희대학교 치과대학 치과보철학교실
최부병 ( Choi Boo-Byung ) - 경희대학교 치과대학 치과보철학교실
KMID : 0362419950330040718
Abstract
This study was performed to measure the mandibular movement and the changes of masicatory and sternocleidomastoid muscle activity reflected by occlusal disturbance during habitual chewing. For this study, 18 subjects(14 males and 4 females with an average age, of 24.0) were selected. The impression of each subject were taken for measuring intermolar distance on lower dentition. The activities of masticatory and sternocleidomastoid muscle and the mandibular movement were recorded and analyzed during habitual chewing by means of E.M.G.(electromyograhp), E.G.N.(electrognathograph), rotate program in BioPak analyzing system(BioResearch Inc.). @ES The results were as follows: @EN 1. In EMG of the mandibular rest position, the mean value of muscle activities were increased by occlusal disturbance and recovered original state after removal. This result is prominent in sternocleidomastoid muscle and anterior belly of digastric muscle 0.05
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