The relationship between body function and head and bodily movements accompanied by mandibular movements in subjects with mandibular deviation

为探讨颅面形态和错牙合对姿势，尤其是头部和身体运动的影响，采用六度颌骨和身体运动分析仪系统和肌电图对下颌偏斜受试者的头部和身体运动进行测量.在正常牙合者中，坐位和站立位的头部运动频率分别为96.5±5.6%和96.2±3.6%.下颌偏斜患者坐位时头部运动频率为76.9±37.6%，立位时为60.5±31.1%.正常牙合受试者的身体运动频率在坐位为87.4±10.8%，在立位为81.1±16.1%.下颌偏斜患者坐位体动频率为51.8±17.7%，立位体动频率为37.8±13.6%，提示下颌偏斜引起的咬合接触不仅对上级肢体有影响，而且对下肢也有影响。结论：咬合接触和颅面形态的不对称性可能会影响姿势控制的协作，尤其是身体动作。

To investigate the influence of craniofacial morphology and malocclusion to the posture, especially head and bodily movements, the head and bodily movements were measured by system of six-degrees jaw and bodily action analysis apparatus, and EMG in subjects with mandibular deviation.1. In subjects with normal occlusion, the frequency of head movements was 96.5±5.6% in sitting position and 96.2±3.6% in standing position.2. In subjects with mandibular deviation, the frequency of head movements was 76.9±37.6% in sitting position and 60.5±31.1% in standing position.3. The frequency of bodily movements in subjects with normal occlusion was 87.4±10.8% in sitting position and 81.1±16.1% in standing position.4. The frequency of bodily movements in subjects with mandibular deviation was 51.8±17.7% in sitting position and 37.8±13.6% in standing position.These results suggested that the influence of occlusal contact accompanied by mandibular deviation was not only region of superior limb but also inferior limb. It was concluded that the asymmetry of occlusal contact and craniofacial morphology might affect the collaboration of posture control, especially bodily movements.