前牙反是较常见的错畸形，在江油市人民医院口腔科就诊的错畸形患者中占１９％，常伴有后牙近中错和前牙拥挤，临床表现为下颌前突，上颌发育不足或两者兼有的凹面形。作者近２年采用固定矫治器配合垫矫治２１例反畸形，疗效显著，现报告如下。１临床资料本组... Anterior crossbite is the most common malformations deformity, in Jiangyou City People's Hospital dental malocclusion malformation patients accounted for 19%, often accompanied by posterior teeth near the wrong and crowded anterior crowns, the clinical manifestations of mandibular prognathism , Maxillary hypoplasia, or both. The author nearly 2 years with fixed appliance with  pad correction of 21 cases of inverted deformity, significant effect, are as follows. 1 clinical data in this group ...