口腔医学研究 ›› 2015, Vol. 31 ›› Issue (11): 1143-1147.

• 临床研究论著 • 上一篇    下一篇

不同牙合型人群咀嚼肌肌电活动的研究

何媛,张琪#,李天舒,付贵源,徐琳,易龙,王佳莹,古再丽阿依,高璐*   

  1. 大连医科大学口腔医学院 辽宁 大连 116044
  • 收稿日期:2015-04-13 出版日期:2015-11-28 发布日期:2016-03-21
  • 通讯作者: 高璐,E-mail:dygaolu@sina.com
  • 作者简介:何媛(1992~),女,河北省唐山市人,学士,主要从事口腔解剖生理学研究。
    张琪(1992~),女,河北省新城县人,学士,主要从事口腔解剖生理学研究。

Effect of Occlusion Relationship on Electromyography Activities of Masticatory Muscle.

HE Yuan, ZHANG Qi, LI Tian-shu, FU Gui-yuan, XU Lin, YI Long, WANG Jia-ying, GUZAILI, GAO Lu.   

  1. College of Stomatology, Dalian Medical University, Dalian 116044, China
  • Received:2015-04-13 Online:2015-11-28 Published:2016-03-21

摘要: 目的:利用肌电图仪测量不同牙合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类错牙合组10人,安氏Ⅱ类错牙合组8人,安氏Ⅲ类错牙合组5人;2)用肌电图仪测量各组人群的测量不同牙合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类错牙合畸形组,与正常对照组、安氏Ⅰ类错牙合畸形组、安氏Ⅱ类错牙合畸形组相比,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类错牙合畸形组人群,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类错牙合畸形组人群,与正常对照组、安氏Ⅰ类错牙合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类错牙合畸形组与其余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:不同牙合型人群在咀嚼和吞咽过程中,咀嚼肌肌电活动有所不同,推断错牙合畸形可影响咀嚼肌的正常功能运动。

Abstract: 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 class Ⅱ malocclusion group (n=8) and Angle's class Ⅲ 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 class Ⅲ 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 Ⅲ group 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.

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