“２×４”矫治技术是标准方丝弓矫治技术的一个衍生支，“２”代表两个磨牙带环，“４”代表着仅在局部粘结４个托槽，多数情况下是在４个切牙上粘结托槽，托槽的非连续性使得在托槽与带环之间有一段弓丝跨度，犹如是悬梁结构，这种特殊的结构决定了该矫治技术的独特性。... “2 x 4” orthodontic technique is a derivative of the standard square arch technique, “2” represents two molars with a ring, “4” represents only 4 locally bonded brackets, in most cases 4 The incisors are glued to the brackets. The non-continuity of brackets makes the arch span between the brackets and the belt loop as a cantilever structure. This special structure determines the uniqueness of this orthodontic technique. ...