用扩弓和多曲方丝弓技术矫治反(牙合)伴下颌偏斜畸形

目的探讨扩弓和多曲方丝弓技术在安氏班类错抬伴下领偏斜矫治中的作用机理。方法选择安氏m 类错抬伴下领偏斜患者8例，均采用上领扩弓技术矫治单侧上领后牙反抬，多曲方丝弓技术不同程度地直立后牙，调整后牙在三维方向的位置，并解除前牙的反抬，调整下领中线。结果8例m类错抬伴下领偏斜患者均取得良好的矫治效果，矫治后磨牙为中性关系，前牙覆抬覆盖正常。结论轻度及中度安氏班类错抬伴下领偏斜畸形患者通过上领的扩弓及多曲方丝弓矫治技术可有效地矫正磨牙关系及下领偏斜。

Treatment effects with expansion and multiloop edgewise arch wire technique on skeletal class III malocclusion with mandibular deviation]

OBJECTIVE: The purpose of this study is to evaluate the methods of treatment on Class III malocclusion with mandibular deviations, and clarify the principles of expansion and multiloop edgewise arch wire technique. METHODS: 8 skeletal class III with mandibular deviations patients were selected (male 3, female 5, aged 12-18). They were all corrected with maxillary expansion and multiloop edgewise arch wire technique. RESULTS: In all cases, molar relationships were class I, the overbite and the overjet were normal, and the upper and lower midline were harmony. CONCLUSION: Mild and moderate skeletal class III with mandibular deviation can be corrected successfully by maxillary expansion and multiloop edgewise arch wire technique.