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目的评价上颌活动矫治器联合前方牵引治疗替牙期反的疗效。方法选择2006年3月至2010年10月在溧阳市中医院口腔正畸门诊就诊的替牙期反患儿26例,采用上颌活动矫治器联合前方牵引进行矫治,矫治前、后均拍摄头颅侧位片并对X线头影测量结果进行分析。结果 26例患儿经4~8个月矫治后,前、后牙反均全部解除,第一恒磨牙为中性或偏近中关系,前、后牙覆及覆盖正常,侧貌明显改善。除MP-FH角(由下颌平面与眼耳平面的交角)外,其他X线头影测量指标的矫治前后差异均有统计学意义(P<0.05)。结论上颌活动矫治器联合前方牵引能够促进上颌骨生长,抑制下颌骨向前生长,显著改善患儿面型,是替牙期反早期矫治的有效手段。
Objective To evaluate the curative effect of maxillary active appliance combined with anterior traction on antispasmodic periodontitis. Methods From March 2006 to October 2010 in Liyang City Hospital orthodontic treatment of dentition stagnation in children with 26 cases, the use of maxillary active appliance combined with the front traction for correction, before and after correction were taken skull Lateral radiographs and X-cephalometry results were analyzed. Results 26 cases of children after 4 to 8 months of treatment, the anterior and posterior teeth reverse all were lifted, the first permanent molars in the neutral or near the relationship between the anterior and posterior teeth cover and covering normal, obvious side improve. Except MP-FH angle (the intersection of mandibular plane and eye-ear plane), the other X-cephalometry indexes had significant difference before and after treatment (P <0.05). Conclusion Maxillary active appliance combined with anterior traction can promote maxillary growth, inhibit the forward growth of the mandible, and significantly improve the facial shape of the patient.