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Orthodontic camouflage versus orthognathic surgery for class III deformity: comparative cephalometric analysis
P Martinez1, C Bellot-Arcís1, J M Llamas2
1Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.
International Journal of Oral and Maxillofacial Surgery
|December 31, 2016
Summary
Cephalometric variables help distinguish between orthodontic camouflage and orthognathic surgery for Class III malocclusions. Specific measurements like Wits appraisal and incisor angles indicate treatment type, though ideal correction remains challenging in surgical cases.
Area of Science:
- Dentistry
- Orthodontics
- Craniofacial Surgery
Background:
- Class III malocclusion presents complex skeletal and dental challenges in adults.
- Treatment decisions involve balancing orthodontic camouflage with orthognathic surgery for optimal outcomes.
Purpose of the Study:
- To compare cephalometric variables in adult Class III malocclusions before and after treatment.
- To identify cephalometric indicators differentiating orthodontic camouflage from orthognathic surgery.
Main Methods:
- Retrospective analysis of 156 adult patients with Class III malocclusions.
- Measurement of key cephalometric variables (SNA, SNB, ANB, Wits, etc.) on pre- and post-treatment lateral cephalograms.
- Comparison of variables between patients treated with camouflage orthodontics versus combined orthodontics and surgery.
Main Results:
- Statistically significant differences in cephalometric variables were observed between treatment groups and time points.
- The surgical group showed improvement in normal cephalometric measurements post-treatment (24.5% to 33.5%), unlike the camouflage group (30.7% to 28.4%).
- Wits appraisal, lower incisor inclination, and inter-incisal angle were key indicators differentiating treatment modalities.
Conclusions:
- Cephalometric analysis, particularly Wits appraisal and incisor angles, aids in treatment planning for Class III malocclusions.
- Incomplete incisor decompensation can limit skeletal correction, even in surgically treated patients.
