Multistage Treatment of a Class II Division 1 Malocclusion With Severe Crowding

Abstract

The improvement of facial aesthetics is one of the main reasons why patients with a class II division 1 malocclusion seek orthodontic treatment. There are various techniques available to treat class II malocclusions, one of which is a two-phase approach that includes functional jaw orthopedics as well as fixed orthodontic treatment. The following case report describes the case of a 12-year-old growing female patient AK with a severe class II division 1 malocclusion. The patient was treated initially with Haas-type rapid maxillary expansion. Pre-functional orthodontics was followed with a removable twin block functional appliance and a combination pull headgear for growth modification and correction of her overjet and profile. Thereafter, a fixed, pre-adjusted MBT (McLaughlin Bennet Trevsi) prescription orthodontic appliance was utilized following the extractions of the maxillary first premolars and two lower incisors in the final phase, to ensure well-aligned arches and improved aesthetics and function.