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目的 :将改良固定反式Twin -block矫治器用于矫治早期AngleⅢ错牙合 ,并评价其临床应用效果。方法 :应用反式Twin -block矫治器治疗 1 2例处于生长发育期AngleⅢ错牙合 ,比较矫治前后的临床表现及X线投影测量结果。结果 :经 4～ 6个月的治疗 ,患者正、侧面轮廓明显改善 ,前牙反覆盖反覆牙合得以矫治 ,磨牙关系为AngleⅠ类。结论 :反式Twin -block矫治器能迅速有效矫治早期AngleⅢ错牙合 ,且制作更为简单 ,结构小巧 ,对生长发育期患者的依赖性小
OBJECTIVE: To improve the clinical effect of Angle Ⅲ malocclusion by modified modified Twin -block appliance. Methods: The clinical application of trans-Twin -block appliance in treatment of 12 cases of Angle Ⅲ malocclusion in growth and development, before and after treatment and X-ray projection measurement results were compared. Results: After 4 to 6 months of treatment, the positive and lateral contours of the patients were significantly improved. The anterior teeth covered with anti-repeated occlusion were corrected and the relationship between molar teeth was AngleⅠ. Conclusion: The trans Twin -block appliance can quickly and effectively correct the early Angle Ⅲ malocclusion, and the production is simpler, compact and less dependent on the growth and development of patients