双期矫治儿童安氏Ⅱ1下颌后缩错畸形的临床应用

Two-phase Correction of Children's on Angle Class Ⅱ DivisionⅠof Backwards Malocclusion with Clinical Application

目的应用双期矫治的方法,对下颌后缩引起的安氏Ⅱ1分类患者进行矫治。方法1期矫正采用activator,Ⅱ期矫正采用直丝弓。结果双期矫治中1期治疗能纠正骨骼矢状关系不调,改善了侧面外形,同时降低了Ⅱ期矫治的难度。结论双期矫治儿童安氏Ⅱ1下颌后缩错畸形有明显疗效。

Objective A research on the correction, effects for class-division partients caused by mandible backwards through using the two-phase Correction method.Methods Adopting activator methods in first phase,and straight wire method insecond phase.Results In first phase,two phase correction cure can improve the relation ships between maxilla and mandible,teeth and jaw-bone,as well as side face of soft tissue,in second phase,therefore,its difficulties can be reduced and the curative effects Improved.Conclusion To use two-phase correction method canobtain Evident curative effects and better side-face of soft-tissue for jaw-bone backwards malocclusion.