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Mandibular lengthening by gradual distraction: analysis using accurate skull replicas
T Takato1, K Harii, S Hirabayashi
1Department of Oral and Plastic Surgery, Faculty of Medicine, University of Tokyo, Japan.
British Journal of Plastic Surgery
|December 1, 1993
Summary
Extraoral devices effectively lengthen the mandible using gradual distraction in patients with unilateral mandibular hypoplasia. Accurate skull replicas aided surgical planning and evaluation, achieving significant mandibular dimension increases.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthodontics
- Craniofacial Reconstruction
Background:
- Gradual distraction osteogenesis is an established technique for limb lengthening.
- Unilateral mandibular hypoplasia presents significant challenges in facial symmetry and function.
Observation:
- An extraoral distraction device was utilized to lengthen the mandible in four patients.
- Accurate skull replicas were employed for precise surgical planning, including corticotomy lines, distraction vectors, and screw placement.
Findings:
- Significant increases in mandibular dimensions were achieved in all treated patients.
- The use of skull replicas proved highly beneficial for anatomical definition, surgical simulation, and pre/postoperative assessment.
Implications:
- Extraoral distraction osteogenesis offers a viable solution for correcting mandibular hypoplasia.
- Patient-specific planning using accurate skull replicas enhances surgical outcomes and predictability in craniofacial lengthening procedures.