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[Distraction osteogenesis for correction of maxillo-mandibular deformity]
Ju-yu Song1, Ye Zhang, Zhi-hong Chen
1Department of Stomatology, Shenyang General Hospital, PLA, Shenyang 110016, China.
Zhonghua Zheng Xing Wai Ke Za Zhi = Zhonghua Zhengxing Waike Zazhi = Chinese Journal of Plastic Surgery
|September 10, 2003
Summary
Extraoral distraction osteogenesis effectively corrects severe maxillo-mandibular deformities, offering a new surgical approach. This method shows promise for complex cases often challenging with traditional orthognathic surgery.
Area of Science:
- Craniofacial surgery
- Orthognathic surgery
- Distraction osteogenesis
Background:
- Maxillo-mandibular deformities present significant challenges for correction.
- Conventional orthognathic surgery may be insufficient for severe cases, particularly those involving cleft palate and secondary maxillary hypoplasia.
Purpose of the Study:
- To evaluate the efficacy of self-designed extraoral distraction devices in correcting diverse maxillo-mandibular deformities.
- To assess the application of extraoral distraction osteogenesis as an alternative surgical technique.
Main Methods:
- Eleven patients with various maxillo-mandibular deformities underwent correction using custom-designed extraoral distraction devices.
- Specific deformities included severe secondary maxillary hypoplasia in cleft palate patients, micrognathia, mandibular defects, and hemimandibular hypertrophy.
- Distraction ranged from 12-22 mm for mandibular and maxillary elongation and 15 mm for vertical mandibular distraction.
Main Results:
- Satisfactory correction was achieved in all eleven cases with minimal complications.
- Minor issues included pin loosening (1 case) and pin bending (4 cases) during vertical mandibular distraction.
- One patient experienced edge-to-edge bite and mild open occlusion post-fixation.
Conclusions:
- Extraoral distraction osteogenesis presents a viable and advantageous new method for correcting complex maxillo-mandibular deformities.
- This technique offers a valuable alternative for cases refractory to standard orthognathic surgical procedures.