结论：正中咬合时，是否有咬合接触关系对颞肌前束的肌电活动有明显影响，而对咬肌的肌电活动无明显影响。
Conclusion: Vertical distance occlusion contact may affect the EMG activity of temporalis-anterior muscle but not on that of masseter muscle during the central biting.
结论正畸治疗前必须了解患者下颌处于正中关系时的咬合情况，发现与下颌位置之间的不协调。
Conclusions the occlusion in centric jaw relation should be analysed before treatment to reveal the disharmony between occlusion and jaw position.
结果在正中颌位大力咬合时，线性总义齿修复组颞肌前束肌电值高于解剖式总义齿修复组，尤以牙槽嵴吸收严重的患者最为明显（P<0.05）；
Results The peak value of anterior temporal muscle of linear occlusal dentures with severe resorption of residual ridge was higher than that of anatomic occlusal dentures ( P< 0.05 ).
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