양측성 하악지 시상분할술을 이용한 악교정 수술시술 후 교합력과 근전도 변화
THE OCCLUSAL FORCE AND EMG CHANGE AFTER BSSRO
이성규, 김경욱, 최용관, 황대용,
소속 상세정보
이성규 ( Lee Sung-Kyu ) - 단국대학교 치과대학 구강악안면외과학교실
김경욱 ( Kim Kyung-Wook ) - 단국대학교 치과대학 구강악안면외과학교실
최용관 ( Choi Yong-Kwan ) - 단국대학교 치과대학 구강악안면외과학교실
황대용 ( Hwang Dae-Yong ) - 단국대학교 치과대학 구강악안면외과학교실
KMID : 0355620080340050537
Abstract
BSSRO is most frequently operated among orthognathic surgery techniques for repairment of maxillofacial deformities. In case of patients with maxillofacial asymmetry accompanying mandibular protrusion who are operated by BSSRO, this study considers the recovering time for masticatory force of each tooth and Masseteric EMG and the adequate time enabling normal occlusion. The patients who are operated with BSSRO under general anesthesia in Dankook Dental Hospital, Department of OMS are selected for this study. The control group is devided into 2. 26 patients with facial asymmetry accompanying mandibular protrusion are selected for group 1 and their maximum voluntary bite force and masseteric EMG are measured. Group 2 is formed by volunteers with healthy dentition who are measured maximum bite force and masseteric EMG on both sides of the mouth. At the week of 3rd, 5th, 7th, 9th and 11th, Mann-Whitney U test is carried on for statistical analysis and the result is as follows. 1. Patients with mandibular protrusion showed apparently low maximum bite force and masseteric EMG than patients with normal occlusion. 2. In comparison with control group 1, Occlusal force is regained in incisors and canines at the 9th week and in premolars and molars, 11th week and masseteric EMG is regained at 11th week. 3. Comparing to normal occlusal patients, no recovery could be found in experimental group in every parts of the mouth.
키워드
Occlusal force;EMG change;BSSRO
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