Correction of severe overbite and gummy smile in patients with bimaxillary protrusion.

摘要

A 14-year-old female in the permanent dentition presented with the chief complaints of a gummy smile and crowding. She showed a convex profile, a large interlabial gap in rest position, labial protrusion, and excessive lower facial height (Fig. 1). The gingival display in both the anterior and posterior areas suggested vertical maxillary excess (Fig. 2). Intraoral examination revealed a Class II canine relationship with a severe anterior deep bite and 10mm overjet.