123Dentofacial deformity456A+B+C+D+E=Anterior lower incisor crowding78 Relation between size of overjet andRelation between size of overjet andprevalence of traumatised anterior teethprevalence of traumatised anterior teeth Overjet(mm)Incidence%5 22 9 24 9 449101112131415161718192021222324252627牙颌数字建模和隐形矫正器牙颌光固化在牙轿器技术流程中的位置牙颌光固化在牙轿器技术流程中的位置牙型数据牙型数据层析层析反求、矫正反求、矫正矫治器母模矫治器母模矫治器矫治器28293031323334353637