成人骨性反的咀嚼肌肌电特征  

Masticatory muscles electromyographic character of the patient with skeletal crossbite

作　　者：冷军[1] 段银钟 金军[3] 张俊华 李永明 

机构地区：[1]解放军第305医院口腔科,北京市100017 [2]第四军医大学口腔医院正畸科 [3]解放军第二炮兵总医院口腔科 [4]第四军医大学口腔医院解剖生理教研室

出　　处：《中国美容医学》2005年第3期317-319,共3页Chinese Journal of Aesthetic Medicine

摘　　要：目的:本研究通过对成人骨性反牙合患者主要咀嚼肌肌电检查分析,揭示成人骨性反牙合畸形对咀嚼肌功能的影响。方法:20名患者均为需正畸与正颌手术联合治疗的成人骨性反牙合患者。利用肌电图仪测试咬肌、颞肌前束、二腹肌前腹在功能活动中肌电变化。结果:与对照组相比,咬肌、颞肌前束和二腹肌前腹的肌电,除个别功能位外,与对照组均有显著不同,其中咬肌的肌电变化最明显。咀嚼肌在姿势位、前伸位、后退位、张口位、闭口位的肌电值增大;双侧咀嚼时,咀嚼肌的肌电是下降的。结论:骨性反牙合患者的咀嚼肌肌肉长期处于紧张状态,咀嚼肌肌电异常,患者咀嚼功能低下。Objective The purpose of this study was to know the masticatory muscles electromyographic character of the patient with skeletal crossbite. Methods All 20 patients in this study were diagnosed to be skeletal crossbite. Electromyogram was used to test the changes of activity of masseter muscle, temporal anterior and diagastric anterior. Results Compare to the contrast group, the most mean cumulative voltage (MCV) of the masseter muscle, temporal anterior and diagastric anterior were increased. But the mean cumulative voltages of masticatory muscles were decreased during chewing. Conclusion The masticatory muscles activity of the patient with skeletal crossbite is abnormal. The function of the masseter muscle is less effective than the contrast.

关 键 词：肌电图 咀嚼肌 骨性反HE 

分 类 号：R782.2[医药卫生—口腔医学]