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目的探索骨性Ⅲ类错畸形非拔牙矫治的适应症及最佳年龄。方法选取我院收治的轻中度骨性Ⅲ类错畸形患者11例。男4例,女7例,年龄12~20岁。均采用直丝弓矫正技术配合Ⅲ类颌间牵引进行矫正。结果治疗结束后,尖牙、磨牙均达到中性关系,前牙建立正常覆覆盖,面部软组织侧貌有所改善。结论对于轻中度的骨性Ⅲ类错畸形,在替牙晚期及恒牙早期,下颌第三磨牙未萌或缺失时,非拔牙正畸治疗也可以取得满意的疗效。
Objective To explore the indications and the best age of skeletal Class Ⅲ malocclusion without extraction. Methods Eleven patients with mild to moderate skeletal Class Ⅲ malocclusion were selected in our hospital. 4 males and 7 females, aged 12 to 20 years old. Straight wire arch correction techniques are used with Class Ⅲ intermaxillary traction correction. Results After the treatment, the canines and molars reached the neutral relationship, the anterior teeth were established with normal covering and the facial soft tissue appearance was improved. Conclusion For mild to moderate skeletal Class Ⅲ malocclusion, in the late stage of tooth fixation and the early permanent teeth, the third mandibular molars are not adorable or missing, and non-extractive orthodontic treatment can achieve satisfactory results.