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.

Effectiveness Of Rapid Palatal Expansion (RPE) In Class II Maloclusion and The Relationship With Muscle Contraction In Childhood Growth: Systematic Review

“…Various types of functional apparatus exist and are designed to alter the activity of various muscle groups that affect the position and function of the mandible. By changing the vertical and sagittal positions of the mandible, muscle strength can cause orthodontic and orthopedic changes to the teeth [10]. In the case of class II malocclusion, according to a study by Iwasaki T et al [22] Pulling the mandible back is the basis for the possible association with mandibular retrognathia in children.…”