Tratamiento ortodóncico-quirúrgico para corrección de clase III esquelética. Presentación de un caso clínico

A 21-year-old patient attended the Orthodontics Clinic of the Division of Postgraduate Studies and Research at the Faculty of Dentistry, UNAM. The main reason for consultation was a crossbite. Upon facial assessment, in the frontal view, a dolichofacial face, a positive smile, hypertonic chin, thick lips, matching dental and facial midlines and lip incompetence were observed. Intraorally she presented mild dental crowding, dental rotations, matching dental midlines, squareshaped arches, bilateral class III molar and canine relationship, posterior cross bite on the left side and an edge to edge bite. Model analysis showed an upper tooth-bone discrepancy of -2 mm and in the lower arch, -3.5 mm. Overbite was 0 mm and overjet, 0 mm.