目前临床上对处于发育期的前牙覆盖大于10mm的安氏II1错牙合儿童 ,矫治通常需要分2期进行[1],第1期采用功能矫形治疗 ,纠正颌骨关系的异常 ,减少牙牙合面不调程度 ,第2期则利用固定矫治器做牙的移动控制和精细调整 ,从而达到改善面形、矫正深覆盖建立正常I类咬牙合关系的目的。 Currently in clinical development of anterior teeth covering more than 10mm Angle II1 malocclusion children, orthodontics usually need to be divided into two phases [1], the first phase of functional orthopedic treatment to correct the abnormal jaw relationship and reduce the teeth The second is the use of fixed appliance to do the tooth movement control and fine adjustment, so as to improve the surface shape, correct deep coverage to establish the purpose of the normal type I bite occlusion.