不同型人群咀嚼肌肌电活动的研究  

Effect of Occlusion Relationship on Electromyography Activities of Masticatory Muscle

作　　者：何媛[1] 张琪[1] 李天舒[1] 付贵源 徐琳[1] 易龙[1] 王佳莹[1] 古再丽阿依 高璐[1] 

机构地区：[1]大连医科大学口腔医学院辽宁大连116044

出　　处：《口腔医学研究》2015年第11期1143-1147,共5页Journal of Oral Science Research

摘　　要：目的:利用肌电图仪测量不同型人群咀嚼肌肌电活动,分析比较各组人群的咀嚼肌肌电特点和差异。方法:1)选取符合实验标准的自愿者33人,平均年龄21.71岁。分组,正常对照组10人,安氏Ⅰ类错组10人,安氏Ⅱ类错组8人,安氏Ⅲ类错组5人;2)用肌电图仪测量各组人群的测量不同型的咀嚼肌肌电活动;3)用SPSS17.0软件进行统计学分析,得出各组人群的咀嚼肌肌电特点和差异。结果:1)静息状态下,显著性>0.05,各组人群咀嚼肌的电位变化没有显著性差异;2)咀嚼过程中,安氏Ⅲ类错畸形组,与正常对照组、安氏Ⅰ类错畸形组、安氏Ⅱ类错畸形组相比,咬肌的电位值显著性<0.05,存在显著性差异;3)吞咽时,1安氏Ⅱ类错畸形组人群,与正常对照组间咬肌的电位比较,显著性<0.05,存在显著性差异;2安氏Ⅲ类错畸形组人群,与正常对照组、安氏Ⅰ类错畸形组咬肌的电位相比较,显著性<0.05,存在显著性差异;3安氏Ⅲ类错畸形组与其余3组二腹肌电位相比较,显著性<0.05,存在显著性差异。4)不同状态时各组人群两侧咀嚼肌肌电变化不同,存在相关性与差异性。结论:不同型人群在咀嚼和吞咽过程中,咀嚼肌肌电活动有所不同,推断错畸形可影响咀嚼肌的正常功能运动。Objective：To measure the electromyograph（EMG）activities of masticatory muscles in different occlusal patterns by electromyography.Methods：Thirty-three volunteers from Dalian Medical University were divided into four groups：normal control group（n=10）,Angle＇s classⅠmalocclusion group（n=10）,Angle＇s classⅡ malocclusion group（n=8）and Angle＇s classⅢ malocclusion group（n=5）.Electromyograph was used to measure the EMG activities of masticatory muscles in different occlusal patterns and the data were analyzed by SPSS.Results：In rest position,EMG activities had no significant difference among the four groups.However,during jaw clenching,EMG activity in the masseter of Angle＇s classⅢ malocclusion group was significantly different from those of other three groups.In swallow condition,both EMG activities in the masseter of Angle＇s class Ⅱ and Ⅲ malocclusion groups were different from that of normal control group.EMG activity in the digastric muscle of Angle＇s class Ⅲgroup was also different from those of other three groups.There were both correlation and differences in the EMG activities of two sides of the masticatory muscles between different occlusal patterns.Conclusion：EMG activities of masticatory muscles between different occlusal patterns were different.Malocclusion may influence the normal function of masticatory muscles.

关 键 词：错[牙合] 肌电图仪 咀嚼肌 下颌运动 

分 类 号：R783.5[医药卫生—口腔医学]