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Abstract

A 21-year-old female with severe concave profile and prominent chin came for surgical-orthodontic consultation. The patient had missing of four premolars which became intricate with extremely lingual inclined incisors and over-developed mandible. The surgery first approach (SFA) was adopted to correct the skeletal factors at the early stage. The pre-adjusted orthodontic bracket system was applied to normalize the torque of the teeth afterward. The capacities of anterior root-torquing auxiliary wire (ART) and multiple-loop edgewise archwire (MEAW) will be discussed, accordingly. The progress records showed remarkable improvement of profile and occlusion. The change of upper incisor show was also discussed. The 3 years follow-up records further demonstrated good stability of the treatment outcome.

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