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，采用六度颌体动作分析仪测量了下颌偏斜患者的头部和身体运动，并进行了肌电检查。结果：1.咬合正常的受试者，坐位头部运动频率为96.5±5.6%，站位头部运动频率为96.2±3.6%。下颌偏斜患者中，坐位头部运动频率为76.9±37.6%，站位头部运动频率为60.5±31.1%。咬合正常的受试者坐位运动频率为87.4±10.8%，站位运动频率为81.1±16.1%。下颌偏斜患者坐位时身体运动频率为51.8±17.7%，站位时为37.8±13.6%，提示咬合接触伴发下颌偏斜对上肢和下肢均有影响。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调，尤其是身体运动。

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.