After maxillary protraction and mandibular retraction with occipito - mental anchorage ( oma ) appliance on first stage , the patient was successfully treated with fixed orthodontic appliance with modified multiple loop edgewise archwire ( meaw ) and asymmetric elastics 本病例報(bào)告為一12歲女孩,主訴下顎前突及偏斜,經(jīng)第一階段以功能性顎骨矯正將上顎拉出及抑制下顎骨生長;第二階段使用全口固定式矯正裝置,以改良式meaw在3 ~ 4個月內(nèi)改善齒列正中線,以及修正偏斜的下顎。