牙、颌畸形,临床多见,转位牙即是其中之一,一般多发生在乳、恒牙交替期的儿童。若不及时处理,产生咬合障碍乃至影响面颌的正常发育,因此早期矫治具有重要意义, 经开、颌畸形303例临床分析可见90度转位占2%,多为中切牙。一、转让牙的临床检查1.检查牙齿数目、形态、乳恒牙交替情况,咬合关系,中线是否偏移,90度转位牙的位置和邻牙的关系。2.X线检查了解牙根形态和有无多生牙以及未萌出的恒牙、多生牙及其位置。常规取研 Dental, jaw deformity, clinical more common, transposition of the tooth is one of them, usually occurred in milk, permanent teeth alternating period of children. If not treated in time, resulting in occlusal disorders and even affect the normal development of facial jaw, so early correction is important, open, jaw deformity clinical analysis of 303 cases showed 90% transposition accounted for 2%, mostly in the incisors. First, the transfer of dental clinical examination 1. Check the number of teeth, shape, the relationship between permanent and permanent teeth, occlusion, midline is offset, 90 degrees translocation of the position of the teeth and the relationship between the adjacent teeth. 2. X-ray examination to understand the root morphology and the existence of polygamy and eruption of permanent teeth, polygons and their location. Conventional research