Related Experiment Videos
Stability of mandibular lengthening using bicortical screw fixation
R T Caskey1, D L Turpin, D S Bloomquist
1Department of Orthodontics, School of Dentistry, University of Washington, Seattle.
Summary
Rigid internal fixation for mandibular lengthening in Class II malocclusion offers superior skeletal stability compared to nonrigid methods. Postoperative analysis showed minimal horizontal changes, indicating a reliable and predictable surgical outcome.
Area of Science:
- Orthognathic surgery
- Craniofacial reconstruction
- Dental implants
Background:
- Class II malocclusion presents challenges in facial aesthetics and function.
- Mandibular lengthening is a surgical option for correcting skeletal discrepancies.
- Previous methods using nonrigid fixation showed limitations in stability.
Purpose of the Study:
- To evaluate the skeletal stability of mandibular lengthening using rigid internal fixation.
- To assess long-term postoperative changes in patients with Class II malocclusion.
Main Methods:
- Retrospective analysis of twenty patients with Class II malocclusion.
- Mandibular lengthening procedure utilizing rigid internal fixation.
- Assessment of postoperative skeletal changes over a mean interval of 15.7 months.
Main Results:
- Rigid internal fixation demonstrated excellent skeletal stability.
- No significant mean postoperative horizontal skeletal changes were observed.
- Individual variability in outcomes was noted, but overall stability was high.
Conclusions:
- Mandibular lengthening with rigid internal fixation provides highly stable results.
- This technique is a reliable option for correcting Class II malocclusion.
- The procedure offers predictable long-term skeletal stability.