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目的:将Twin Force矫治器用于矫治恒牙早期轻度骨性安氏Ⅲ类错牙合的矫治,并用X线头影测量评价其临床应用效果。方法:应用反式Twin Force矫治器治疗12例恒牙早期轻度骨性安氏Ⅲ类错牙合,比较治疗前后的X线头影测量结果。结果:经平均8.2个月的治疗,患者的面部轮廓明显改善,前牙的反得以矫治,磨牙关系为I类,SNA和ANB均增加3o,Ptm-A增加2.05mm,而SNB和NPog-FH没有明显变化。结论:反式Twin Force矫治器能够促进上颌发育,迅速有效矫治恒牙早期轻度骨性安氏Ⅲ类错畸形,且患者戴用舒适,易于配合,对患者配合的依赖性较小。
OBJECTIVE: To use Twin Force appliance to treat orthodontic early malocclusion of Class III malocclusion and to evaluate its clinical application by X-ray cephalometry. Methods: Twelve patients with early mild skeletal Class Ⅲ malocclusion were treated with trans Twin Force appliance. The results of X - ray before and after treatment were compared. Results: After an average of 8.2 months of treatment, the facial contours of the patients were significantly improved, the anterior crossbite was corrected, the molar relationship was type I, the SNA and ANB increased by 3%, the Ptm-A increased by 2.05mm, while SNB and NPog- FH did not change significantly. CONCLUSION: The trans Twin Force appliance can promote the maxillary development and promptly and effectively treat early mild skeletal Class Ⅲ malocclusion. And the patients wear comfortable, easy to fit and have less dependence on patients.