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Publication:
The Chinese Journal of Dental Research

Year 2001
Volume 4 , Issue 3

Back
Pages: 7 - 13

Distraction Osteogenesis in the Mandibular Ramus for Correction of Hemifacial Microsomia

Xing Wang, MD, PhD/Ye Lin, DDS, PhD/Biao Yi, DDS, PhD/Cheng Liang, DDS, PhD/Yan Heng Zhou, DDS, PhD/Zi Li Li, DDS, PhD

Objective: To study the application of distraction osteogenesis in the mandibular ramus for correction of hemifacial microsomia. Methods: Two mandibular distractors (one made in Germany, another made in China) were used on 11 patients seen with hemifacial microsomia at Peking University School of Stomatology between December 1997 and March 2000. The average age of the patients was 14.1 years, with an age range of 4.5 to 23 years. Le Fort I osteotomies in 5 patients and genioplasties in 4 patients were performed simultaneous to mandibular distraction. Results: The increase in mandibular ramus length was 15 to 30 mm. No infection or dysosteogenesis occurred in any patient. In one patient, the distractor did not work by the third day after placement and it was replaced. After a consolidation period of 3 months, new bone had formed in all patients and the distractors were removed. During the distraction period, pain in the TMJ area and lip numbness occurred for a short time in some patients. For these patients, the rate and rhythm of distraction were decreased. All the patients and their parents were satisfied with the results. Conclusion: Mandibular distraction osteogenesis is the most effective procedure for correction of hemofacial microsomia. Few complications occur, and the result achieved is much better than that seen with traditional surgical procedures.

 

 

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