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Growth and the Class II patient: rendering unto Caesar
1University of Michigan School of Dentistry, Orthodontics and Pediatric Dentistry, Ann Arbor 48109-1078, USA.
Seminars in Orthodontics
|May 9, 1998
Summary
Class II patients often exhibit favorable mandibular growth, advancing relative to the maxilla, irrespective of orthodontic treatment. This natural "good growth" pattern is crucial for evaluating the effectiveness of growth modification therapies.
Area of Science:
- Orthodontics
- Craniofacial Growth
Background:
- Class II malocclusion treatment often aims to enhance mandibular growth.
- Favorable sagittal growth patterns are frequently observed in Class II patients.
- Growth modification therapy may be overemphasized due to uncontrolled clinical observations.
Purpose of the Study:
- To examine the pattern of sagittal maxillo-mandibular growth in Class II patients treated with the edgewise appliance.
- To establish a baseline for evaluating growth modification effects.
Main Methods:
- Analysis of sagittal maxillo-mandibular growth (apical base change) in 120 Class II patients.
- Treatment involved the edgewise appliance, with or without extractions.
Main Results:
- Over 90% of patients demonstrated mandibular advancement relative to the maxilla.
- This favorable growth pattern occurred regardless of extraction or nonextraction treatment.
Conclusions:
- The inherent favorable growth pattern in Class II patients must be considered when assessing growth modification treatments.
- Methods for accounting for natural "good growth" are essential for accurately evaluating functional appliance efficacy.