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目的探讨扩弓结合前方牵引矫治骨性Ⅲ类错合的临床疗效。方法选择商丘市中心医院2008年10月至2011年7月收治的27例生长发育期的骨性Ⅲ类错合应用快速扩弓结合前方牵引的方法进行矫治,对矫治前后的头颅侧位片和石膏模型进行测量,评价治疗前后软硬组织的变化及PAR指数。结果本组27例骨性Ⅲ类错合患者经快速扩弓结合前方牵引治疗6～8个月后,反合的前牙得到纠正,尖牙与磨牙的关系中性,侧面型得到明显改善。结论快速扩弓结合前方牵引治疗生长发育期骨性Ⅲ类错合可有效促进上颌骨向前生长,抑制下颌骨生长,有利于Ⅲ类骨骼错合畸形的调整。
Objective To investigate the clinical effects of augmentation combined with anterior traction in the treatment of skeletal Class Ⅲ malocclusion. Methods Shangqiu Central Hospital from October 2008 to July 2011 admitted to the 27 cases of growth and development of skeletal class Ⅲ malocclusion using rapid expansion combined with anterior traction method for correction of the cephalometric slices before and after correction and Gypsum model for measurement, evaluation of changes in soft and hard tissue before and after treatment and PAR index. Results The 27 cases of patients with skeletal class Ⅲ malocclusion were treated by rapid expansion combined with anterior traction for 6-8 months. The antegrade anterior teeth were corrected and the relationship between canines and molars was neutral. The flank type was significantly improved. Conclusion The rapid expansion combined with anterior traction for the growth and development of skeletal class Ⅲ misclassification can effectively promote the maxillary forward growth and inhibit the growth of the mandible, is conducive to the adjustment of type Ⅲ skeletal malformations.