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目的:探讨SanderⅢ矫治器矫治早期骨性Ⅲ类错畸形的疗效。方法:混合牙列中度骨性Ⅲ类错患者30例,配戴SanderⅢ矫治器12个月,用Steiner和Tweed分析法测量治疗前后患者的头颅定位侧位片。结果:SNA角、ANB角、UI-LI角、面突角,治疗前后比较差异有统计学意义(P<0.01),临床结果显示中度骨性Ⅲ患者的错畸形纠正。结论:SanderⅢ矫治器矫治中度骨性Ⅲ类错畸形疗效肯定;对骨性反覆深患者需配合垫矫治器,可缩短治疗时间,提高疗效。
Objective: To investigate the effect of Sander Ⅲ appliance in the treatment of early stage skeletal Class Ⅲ malocclusion. Methods: Thirty patients with moderate skeletal Class Ⅲ malocclusion were treated with Sander Ⅲ appliance for 12 months. Stellar and Tweed analysis was used to measure the cranial positioning flaps before and after treatment. Results: There were significant differences in SNA angle, ANB angle, UI-LI angle and facial protrusion angle before and after treatment (P <0.01). The clinical results showed that the correction of malocclusion in patients with moderate grade Ⅲ was corrected. Conclusion: Sander Ⅲ appliance is effective in treating moderate skeletal Class Ⅲ malocclusion. Patients with orthodontic bilirubin need to cooperate with pad appliance to shorten the treatment time and improve the curative effect.