松弛性及稳定性垫对咀嚼肌肌电影响的探讨

Influence of the Relaxation Splint and Stabilization Splint on the EMG Parameters of the Masticatory Muscles

目的 探讨松弛性牙合垫与稳定性牙合垫对咀嚼肌 (咬肌、颞肌前束 )肌电的影响。方法 2 0名健康志愿者不戴牙合垫与戴松弛性牙合垫和下颌稳定性牙合垫时分别作正中紧咬 ,比较颞肌前束、咬肌肌电积分值的改变。结果 戴入松弛性牙合垫和稳定性牙合垫后 ,颞肌前束、咬肌肌电积分值均有下降 ,戴松弛性牙合垫更显著。结论 松弛性牙合垫和稳定性牙合垫均对咀嚼肌有松弛作用。

Objective To explore the influence of the type of occlusal splint on the masticatory muscles (TA, MM).Methods TA and MM EMG during ICP maximal clenching were recorded in 20 dentate normal subjects, when they weared no occlusal splint, relaxation splint and mandibular stabilization splint.Results With the insertion of relaxation splint and mandibular stabilization splint, the EMG parameters of TA and MM during ICP maximal clenching was dramatically reducded ( P <0.05).Conclusion The relaxation splint and mandibular stabilization splint can relax the masticatory muscles.