近年来,家长带儿童到门诊要求矫治前牙反(牙合)的人数明显增多。乳恒牙交替时期,由于多种原因造成萌出的前牙出现反(牙合),按常规需要13～15岁恒牙萌出达到一定高度后,才能戴活动矫治器矫正排齐。时间约需一年左右。此时戴矫治器影响儿童学习、发音等。经临床多年实践观察,采用可摘式简单 In recent years, parents with children to the clinic require an anterior teeth anti (occlusion) increased significantly. During the period of alternating primary and permanent teeth, the eruption of the front teeth caused by a variety of reasons (occlusal), according to conventional needs of 13 to 15 years old eruption of the etiology reached a certain height, to wear active appliance alignment alignment. About a year or so time. At this point wearing appliances affect children's learning, pronunciation and so on. Clinical practice for many years to observe, using removable simple