正畸固定矫治器矫治乳前牙（合）的疗效观察

目的：探讨固定矫治器治疗乳前牙（合）的疗效。方法对2011-01～2014-03在广西壮族自治区人民医院口腔正畸科自愿选择固定矫治器进行矫治的15例牙（合）畸形病例的治疗效果进行分析。结果15例患者最长反牙（合）解除时间2个月，最短3周，平均疗程（4±0.5）个月。矫治后前牙覆牙（合）覆盖关系正常，追踪2年，13例牙性及功能性反牙（合）疗效稳定，无复发。2例有骨性反牙（合）遗传史，反牙（合）复发。结论固定矫治器治疗乳前牙反牙（合）能够减少患儿的不配合及就诊次数，并顺利地解除乳前牙反牙（合），是一种治疗乳前牙反牙（合）的高效矫治器。

Curative effect of deciduous anterior teeth crossbite treated with fixed appliance

Objective To explore the curative effect of deciduous anterior teeth crossbite treated with fixed appliance.Methods The curative effect of fixed appliance on deciduous anterior teeth crossbite in 15 children trea-ted in orthodontics department of People′s Hospital of Guangxi Zhuang Autonomous Region from 2011 to 2014 were analyzed.Results The longest curative course for crossbite to be quitted in 15 children was 2 months,the shortest was 3 weeks.Average total treatment course was （4 ±0.5）months.Deciduous anterior tooth overjet and overbite were normal after treatment .The curative effect of 13 children were stable following 2 years after treatment ,and just 2 pa-tients who had hereditary skeletal crossbite family history had a relapse .Conclusion Treatment for deciduous anteri-or teeth crossbite with fixed appliance need little cooperation from the child ,diminish child′s times of return visit ,can quit crossbite smoothly ,and was effective highly .