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目的分析前方牵引结合上颌快速扩弓矫治替牙期安氏Ⅲ类错的临床效果。方法对62例替牙期安氏Ⅲ类错病例,采用上颌固定方法,选择扩弓器进行上颌快速扩弓,扩弓结束后给予上颌前方牵引。治疗前后,采用X线测量分析患者的头颅侧位片,对比分析治疗前、后软组织和硬组织的变化情况。结果经过治疗后,全部病例安氏Ⅲ类错情况解除,覆盖显示正常,矫治前后的软硬组织指标出现显著性变化,上颌骨呈明显的是矢状向增长。结论前方牵引结合上颌快速扩弓矫治,可明显改善上颌骨向前生长,促使下颌骨向后、向下旋转,有效缓解骨面畸形状况,明显改善患者面貌。
Objective To analyze the clinical effect of anterior traction combined with maxillary rapid expansion in treating malocclusion of Angle Class Ⅲ malocclusion. Methods Totally 62 cases of malocclusion of Angle Class Ⅲ malocclusion were treated with maxillary fixation and maxillary expansion with maxillary expansion. The maxillary anterior traction was given after the maxillary expansion. Before and after treatment, X-ray was used to analyze the cephalometric slices of the patients and the changes of soft tissue and hard tissue before and after treatment were compared. Results After treatment, the malocclusion of Class Ⅲ malocclusion in all cases was relieved and the coverage was normal. The indexes of soft and hard tissue before and after treatment showed significant changes, and the maxillary was obviously increased sagittally. Conclusion Anterior traction combined with rapid maxillary expansion can significantly improve the forward growth of the maxilla and promote the mandible to rotate backwards and forwards. It can effectively relieve the bone deformity and improve the appearance of the patients.