The outcome of a two-phase treatment in a patient with Angle Class II, Division 1 malocclusion and an excessive overjet

This article describes a two-phase orthodontic approach to treating a young adolescent girl that had Angle Class II, Division 1 malocclusion associated with an excessive incisor overjet caused by prolonged digit sucking. The Phase I treatment utilized a tongue crib and a straight-pull headgear appliance during puberty and achieved significant improvements in the facial profile. The Phase II treatment involved edgewise appliances, a transpalatal arch and a straight-pull headgear appliance without extraction of permanent teeth. Dental and skeletal corrections were made with the two-phase treatment and stable occlusion and good facial proportion were obtained.