结果：单侧后牙反牙合矫正后，面部不对称有明显改善。

Result:After the correction of unilateral crossbite by maxillary expansion, craniofacial asymmetry improved significantly.

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目的：探讨单侧后牙反牙合髁突前伸运动轨迹的特征并比较与正常牙合之间的差异。

Objective:To study character mandibular movement tracings during mandibular protrusion in patients with unilateral posterior crossbite and compare the difference with normal occlusion.

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目的：探讨弹性包绕式垫加螺旋扩弓器矫治替牙期后牙反的适用性及治疗前后的牙颌结构变化。

Objective:To evaluate the maxillary expansion effects of posterior crossbite patients treated with elastic wrapping bite guard and screw expansion mechanic in the mixed dentition.

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