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咬合板对翼外肌功能紊乱作用的肌电研究
引用本文:陈永进,王惠芸,王美青. 咬合板对翼外肌功能紊乱作用的肌电研究[J]. 实用口腔医学杂志, 1995, 0(4)
作者姓名:陈永进  王惠芸  王美青
作者单位:第四军医大学口腔医学院 710032(陈永进,王惠芸),第四军医大学口腔医学院 710032(王美青)
摘    要:
对43例伴翼外肌(LP)功能紊乱的颅颌功能紊乱(CMD)患者戴咬合板前后的LP肌电变化进行研究。结果:戴咬合板后的LP上头姿势位电位及紧咬电位都显著下降,下头电位无显著变化。经咬合板治疗,症状消失或减轻后,关节影像正常者的LP功能多数恢复正常;部分盘前移位者随着盘突关系恢复正常或好转,其LP功能紊乱也恢复正常;大部分不可复位盘前移位及关节盘穿孔者的LP功能紊乱同治疗前。因此,咬合板可使关节正常的CMD患者的LP功能紊乱恢复正常,但对关节内严重结构性紊乱及器质性病变者的LP功能紊乱无明显作用。

关 键 词:翼外肌  颞颌关节  肌电  功能紊乱

Effect of occlusal splint oa electromyogram of lateral pterygoid muscie dysfunction.
Chen Yongjin,et al.. Effect of occlusal splint oa electromyogram of lateral pterygoid muscie dysfunction.[J]. Journal of Practical Stomatology, 1995, 0(4)
Authors:Chen Yongjin  et al.
Affiliation:Chen Yongjin,et al.Stomatological College,The Fourth Military Medical University,Xi' an,710032
Abstract:
The electromyogram(EMG) of lateral pterygoid muscle (LP) in 43 patients with LP dysfunction was measured before, when and after the use of occlusal splint. The postural and clenching activity of superior LP decreased dramatically when patients were wearing the occlusal splint. Normal EMG was observed in patients with normal arthrograra when the symptoms and signs were eliminated or reduced by occlusal splint. The EMG of dysfunctional LP in some patients with anteriorly displaced disk recovered to that with normal function as the incoordinated condyle -disk rektion was corrected. However, LP dysfunction was still present in most patients with irreversible anterior disk displacement and disk perforation after splint therapy.
Keywords:Lateral pierygold muscle  Temporomandibular joint  Eletromyogram  Masticatory muscle dysfunction
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