CAJ | 학술논문

目的：联合应用肌电图仪与咬合分析仪评价骨性Ⅲ类患者正颌术后的肌肉及咬合情况的变化。方法收集15例骨性Ⅲ类正颌手术患者及15例正常患者，病例组在正颌术后3个月、6个月、1年分别进行Bio-pakⅡ肌电图仪与T-ScanⅢ咬合分析系统同步测量，使用配对t检验比较各组间的差别。结果除息止位外，术后6个月组肌电电位及总力显著高于3个月组( P<0．05)；术后1年组功能运动时主要活动肌肉的肌电电位显著高于术后6个月组(P<0．05)，正常组主要活动肌肉的肌电电位和总力显著高于术后1年组(P<0．05)，其余指标无显著性差别。结论骨性Ⅲ类患者正颌手术后1年中，肌肉及咬合功能逐渐增强，但变化不完全同步，且都不能达到正常水平。
목적：연합응용기전도의여교합분석의평개골성Ⅲ류환자정합술후적기육급교합정황적변화。방법수집15례골성Ⅲ류정합수술환자급15례정상환자，병례조재정합술후3개월、6개월、1년분별진행Bio-pakⅡ기전도의여T-ScanⅢ교합분석계통동보측량，사용배대t검험비교각조간적차별。결과제식지위외，술후6개월조기전전위급총력현저고우3개월조( P<0．05)；술후1년조공능운동시주요활동기육적기전전위현저고우술후6개월조(P<0．05)，정상조주요활동기육적기전전위화총력현저고우술후1년조(P<0．05)，기여지표무현저성차별。결론골성Ⅲ류환자정합수술후1년중，기육급교합공능축점증강，단변화불완전동보，차도불능체도정상수평。
Objective To evaluate the post-surgery change of the muscular activation and occlusion of the patients with the skeletal Class Ⅲ malocclusion. Methods Fifteen skeletal Class Ⅲ malocclusion patients and 15 subjects with normal occlusion were included in this study. BioEMGⅡand T-ScanⅢsystem were used to evaluate the muscular activation and occlusion of the 15 patients 3 months,6 months and one year after orthognathic surgery. The results were statistically analyzed. Results EMG and total occlusion force(TOF)were significantly higher 6 months post-surgery than 3 months post-surgery(P<0. 05),and one year post-surgery than 6 months post-surgery in the active muscles. The control group had significant higher EMG and TOF than one year post-surgery group in the active muscles. Conclusion The muscular activation and occlusion of skeletal ClassⅢpatient were improved after surgery but not synchronous and did not reach the normal level.