Internal Distraction Osteogenesis in the Treatment of Mandibular Deformities from Gunshot Wounds

Objective:To summarize restorative results of mandibular deformities from gunshot wounds with the application of internal distraction osteogenesis.Methods:The present report consisted of 3 cases.Installation of internal distractors started at 2～3 months after injuries.After a week of latency,the distraction started at a rate of 1 mm/d,the distraction distance ranged 8～22 mm.The process of bone formation and effects of deformity correction was studied by general observation and panoramic radiography.Results:The patients and distractors were in good condition during the treatment.The bony transport discs were distracted as planned.In the consolidation period of 3 months,the new bone well formed within the distraction gaps,correction of mandibular deformity and restoration of occlusion were satisfied.Conclusion:On the basis of early debridement,the mandibular deformity could be corrected by the internal distraction osteogenesis effectively.