舌簧活动矫治器联合直丝弓矫治器治疗恒牙早期骨性Ⅲ错[牙合]的疗效评价

Treatment effects of double parabolic lingual springs appliance and straight wire appliance therapy in skeletal class III malocclusion

目的评价舌簧活动矫治器和直丝弓矫治器联合治疗恒牙早期骨性Ⅲ错[牙合]的疗效。方法舌簧活动矫治器和直丝弓矫治器联合治疗恒牙早期骨性Ⅲ错[牙合]12例患者，在矫治前和矫治后拍摄并分析头颅定位侧位片，比较它们前后的变化。结果X线片测量显示SNA增加2．800，SNB减少1．390，ANB减少4．88°。结论舌簧活动矫治器和直丝弓矫治器联合治疗恒牙早期骨性Ⅲ错[牙合]的疗效明显，值得推广。

Objective To evaluate the treatment effects of double parabolic lingual springs appliance and straight wire appliance therapy in skeletal class III malocclusion. Methods 12 cases with skeletal class III malocclusion were treated by double parabolic lingual springs appliance and straight wire appliance, cephalometric tracing measurement were taken in analysis, compared between pretreatment and posttreatment in each ease. Results The comparison of before and after orthodontic treatment showed angle SNA increased by 2.80°, angle SNB decreased 1. 39°ANB decreased by 4.88°. Conclusion The above metioned technique could be a reliable way to treat mild and moderate skeletal class III malocclusion.