For the experienced dental implant surgeon, distraction osteogenesis is an excellent and predictable alternative to conventional bone grafting for treating moderate-to-severe vertical ridge defects. Objective: The purpose of this clinical study is to present details of the succesful use of an extraosseous, intraoral distraction osteogenesis procedure used to correct a large anterior mandibular alveolar defect. Materials and Methods: A 34-year-old, healthy female requested fixed prosthetic rehabilitation after trumatic avulsion of mandibular teeth numbers 23 to 26. Clincal and radiographic examination revealed a vertical bony defect in the edentulous region that would compromise fixed implant treatment. Under general anesthesia, a vestibular incision was made. An extra-osseous mandibular alveolar ridge titanium distration device (MEDICON eG 68.88.50) was placed over the exposed bone. After 7 days of healing, the device was activated by turning the threaded activating component 0.9mm every day. Results: After 10 days, nine millimeter of distraction was noted. A 3-month consolidation period was allowed to elapse before removing the distractor. The distracted bone segment was found to be firm but spongy. During the same procedure, after the distraction divice was removed, 2 Camlog (Altatec Biotechnologies) implants were inserted with the use of a surgical template. After a 7-month healing period, the implants were uncovered and found to be osseointegrated completely. A standard restorative protocol followed. Conclusion: The key to success is careful, precise, well-planned surgery with care taken to preserve the viability of the transported segment and maintain precise vector control of the regenerating tissue to ensure an optimal alveolar support foundation for the dental implant-supported restoration.

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