과개교합자의 저작근 활성도 및 교합력에 관한 연구
A Study on the Bite Force and the Electromyographic Activity of Masticatory muscle in Deepbite
정동기, 김광원,
소속 상세정보
정동기 ( Jeong Dong-Ki ) - 조선대학교 치과대학 교정학교실
김광원 ( Kim Kwang-Won ) - 조선대학교 치과대학 교정학교실
KMID : 0353319930170020311
Abstract
This study was undertaken to investigate the correlations between the bite force and the electromyographic activities of masticatory muscle in deepbite, using the T-Scan system and electromyograph.
The subjects of this study consisted of two groups ; one of 20 individuals with normal occlusion, the other group of 30 with deepbite. The docpbite was composed of Class I deepbite (male 9, female 7) and Class II div.1 deepbite(male 8, female
6).
@ES The obtained results of this study were as follows:
@EN 1. The maximum bite force was 155.93 N in normal occlusion, 165.11N in Class I deepbite group, 111.55 N in Class II div. 1 deepbite group.
2. The greater the number of tooth contacts. The more the bite force increased in all groups.
3. During maximum clenching, masseter and ant. Temporalis muscle activity of normal and Class I deepbite group were significantly higher than that of Class II div.1 deepbite group, and the activity of masseter muscle was higher than that of ant.
Temporalis muscle in all groups.
4. The greater the maximum bite force, the more the muscle activities increased in all groups.
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