Purpose To analyse the characteristics of mandibular incisor point chewing movement on frontal plane orbit in youth of normal occlusion.
目的分析正常(牙合)青少年下颌切点额状面咀嚼运动轨迹的特征。
MM showed significantly weaker activity in children with high-angle than that in those with normal-angle in the chewing gum movement(P<0.05).
咀嚼口香糖时，高角组MM的肌电活动低于均角组，有统计学意义（P<0.05）；
MM showed significantly weaker activity in children with high-angle than that in those with normal-angle in the chewing gum movement(P<0.05).
咀嚼口香糖时，高角组MM的肌电活动低于均角组，有统计学意义（P<0.05）；
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