肌筋膜疼痛伴开口受限患者咬肌肌电图研究  

Electromyography Analysis on Masseter Muscles in Myofacial Pain Syndrome Patients with Limited Mouth Opening

作　　者：张非煜[1] 吕亚林[1] 董坚[1] 张杰夫[1] 李俨[1] 

机构地区：[1]首都医科大学附属北京安贞医院口腔医疗中心,北京100029

出　　处：《口腔医学研究》2013年第3期255-258,共4页Journal of Oral Science Research

基　　金：北京市自然科学基金(编号:3123037)

摘　　要：目的:使用肌电图研究肌筋膜疼痛伴开口受限患者咬肌肌电。方法:选择20例肌筋膜疼痛伴开口受限患者为实验组。选择10位无症状者为对照组,用肌电图仪分别记录下两组下颌姿势位MPP和最大牙尖接触紧咬合ICP时,双侧的咬肌MM肌电。结果:MPP,患病组双侧MM肌电振幅均方根值RMS值高于对照组(P<0.01);ICP,患病组MM肌电电位值较正常对照组低(P<0.01)。MPP,患者MF值低于对照组(P<0.05);在ICP,患者MF较正常对照组高(P<0.01)。结论:肌筋膜疼痛伴开口受限患者下颌姿势位和最大牙尖接触紧咬时,咬肌肌电活动较正常人明显异常,咬肌表现为疲劳和失代偿状态。Objective： To analyze the surface electromyography （EMG） data of masseter muscles （MM） in patients with temporomandibular joint myofascial pain and anterior disk displacement without reduction （ADDWR）. Methods： Twenty patients diagnosed with muscular TMD（ADDWR） by clinical examination were selected as experimental group. Ten people checked without TMD were selected as contrast group. EMG data MM of both groups were recorded and analyzed at mandibular postural position （MPP） and maximum contacted intercuspal position （ICP）. The data were analyzed by 2-way repeated-measures ANOVA and means were compared by SNK test （P〈0. 05）. Results： At MPP,patients＇ EMG potentials showed the significantly greater root mean square （RMS） of bilateral MM comparing with those of the control group MM （P〈0.01 ）. At ICP, RMS of the bilateral MM of the experimental group was significantly less （P〈0.01）. At MPP,patients＇ median frequency （MF） shows significantly less （P〈0.05）. At ICP, MF of the bilateral MM of the experimental group was significantly greater than the control group （P〈0.01）. Conclusion： EMG activity of MM on patients who have MPD with limited mouth opening was significantly abnormal at MPP and ICP. MM is at fatigue and decompensated situation.

关 键 词：肌筋膜疼痛 肌电图 颞下颌关节紊乱病 

分 类 号：R782.6[医药卫生—口腔医学]