单侧后牙正锁、关节弹响与咀嚼肌肌电的相关性研究  

Correlation between Unilateral Posterior Scissors-bite,Joint Clicking Symptoms,and Surface Electromyography of Masticatory Muscle

作　　者：贾梦莹 邵博[1] 辜文妍 陈青立[1] 吕曜光 龚忠诚[1] JIA Meng-ying;SHAO Bo;GU Wen -yan;CHEN Qing -Li;LV Yao - guang;GONG Zhong-cheng(Oncology Department of Oral ＆ Maxillofacial Surgery, the First Affiliated Hospital of Xin- jiang Medical University, Urumqi 830054, Chin)

机构地区：[1]新疆医科大学第一附属医院颌面肿瘤外科,新疆乌鲁木齐830054

出　　处：《口腔医学研究》2018年第3期262-265,共4页Journal of Oral Science Research

基　　金：国家自然科学基金(编号:81760191)

摘　　要：目的:探讨单侧后牙正锁、关节弹响与咀嚼肌电活动的相关性。方法:分别收集新疆医科大学大学生单侧后牙正锁组人数40例,单侧关节弹响组人数40例,无关节弹响的个别正常人数40例,分别记录各组下颌姿势位(mandibular postural position,MPP)及牙尖交错位(intercuspal position,ICP)紧咬时双侧颞肌前束(temporal anterior muscle,TA)及咬肌(masseter muscle,MM)的表面肌电值(surface electromyography,SEMG),并计算出咀嚼肌不对称指数,单侧后牙正锁组、单侧关节弹响组均与无关节弹响的个别正常组比较研究。结果:单侧后牙正锁组锁侧MMP时TA与MM较正常组均有较弱的肌电活动(P<0.05),非锁侧与正常组差异无统计学意义,锁侧咀嚼肌肌电均较非锁侧高(P<0.05)。单侧后牙正锁组ICP紧咬时锁侧TA及MM肌电活动均较正常组及非锁侧弱。锁组咀嚼肌不对称指数均大于个别正常组。单侧磨牙正锁组较单侧前磨牙正锁组在MMP及ICP咀嚼肌不对称指数高(P<0.05)。单侧关节弹响组在MMP及ICP紧咬时与个别正常组比较咀嚼肌肌电均无统计学差异。结论:锁与咀嚼肌肌电变化有关,关节弹响与咀嚼肌肌电变化无关。Objective：To investigate the correlation between unilateral posterior scissors-bite,joint clicking symptoms,and surface electromyography of masticatory muscle.Methods：The samples were from Xinjiang Medical University undergraduates and received examination of temporomandibular joint and occlusion,which included 40 people with unilateral posterior scissors-bite,40 people with unilateral joint clicking,and 40 people with normal occlusion no joint clicking.The surface electromyography of bilateral temporal anterior muscles and masseter muscles in mandibular postural position（MMP）and intercuspal position（ICP）for all groups were recorded.The asymmetry index was counted for further comparison.Results：The scissors-bite in unilateral posterior scissors-bite side revealed a lower SEMG of the TA and MM compared with normal occlusion in MMP（P〈0.05）,the nonscissors-bite revealed no significance.The SEMG value of TA and MM were significantly lower than the group with normal occlusion and the non-sicssors-bite when biting ICP.Group of scissors-bite revealed a significance of a higher masticatory asymmetry index than group of normal occlusion.A higher asymmetry index was showed in single molar scissors-bite compared with a single premolar scissors-bite.There was no significance between the group of bilateral joint clicking with the group of normal occlusion about SEMG in MMP and ICP.Conclusion：Scissors-bite was related to the SEMG of masticatory muscles instead of the joint clicking.

关 键 词：锁[牙合] 颞肌 咬肌 肌电 弹响 

分 类 号：R782.6[医药卫生—口腔医学]