安氏Ⅲ类前牙反牙合是一种发育性畸形 ,随儿童的生长发育而发生、发展 ,影响功能和美观。早期的功能矫形治疗对大多数Ⅲ类畸形有明显的治疗作用 ,可促进上颌骨生长 ,改变下颌骨生长方向 ,引导牙颌面正常发育 ,是Ⅲ类畸形早期矫治的有效手段。但对较严重的骨性Ⅲ类错牙合，用一? Angle Class Ⅲ anterior teeth anti-occlusal deformity is a developmental deformity, with the growth and development of children occur, develop, affect the function and appearance. Early functional orthopedic treatment of most of the class Ⅲ deformity have obvious therapeutic effect, can promote the growth of the maxilla, change the growth direction of the mandible, the normal development of dental and maxillofacial incision, is an effective means of early treatment of class Ⅲ deformity. However, the more serious skeletal Class Ⅲ malocclusion, with a?