Soft tissue changes after upper premolar extraction in Class II camouflage therapy.

Area of Science:

• Orthodontics
• Dentofacial Orthopedics
• Cephalometric Analysis

Background:

• Class II division I camouflage treatment aims to improve facial profiles without extractions.
• Concerns about facial profile changes, like "dishing in the face," discourage tooth extraction.
• Limited research exists on maximum retraction effects in Class II division I patients with mandibular deficiency and minimal crowding.

Purpose of the Study:

• To evaluate the long-term facial profile effects of orthodontic camouflage treatment without extraction.
• To assess soft tissue and skeletal changes following maxillary incisor retraction in Class II division I patients.
• To determine the viability of maxillary first premolar extraction for camouflage in specific patient groups.

Main Methods:

• Retrospective cephalometric analysis of 27 Class II division I Caucasian patients.
• Treatment involved extraction of only maxillary first premolars.
• Pre- and post-treatment lateral cephalograms were analyzed using skeletal and soft tissue measures.

Main Results:

• Mean maxillary incisor retraction was 5.27 mm.
• Mean maxillary lip retraction was 2.03 mm, and mean mandibular lip retraction was 1.23 mm.
• Patients achieved good overall facial harmony and balance post-treatment.

Conclusions:

• Maxillary first premolar extraction is a viable orthodontic camouflage option for Class II division I.
• This approach is particularly suitable for patients with full upper lips and relative mandibular deficiency.
• The treatment successfully improved facial aesthetics without compromising profile balance.