Anterior Mandibular Alveolar Distraction Osteogenesis for Implant Supported Denture: a Case Report and a Review of literature

Distraction osteogenesis offers the dental implant surgeon an additional method for optimizing the dimensions of deficient alveolar ridges. Objective: The purpose of this clinical study is to present details of the successful use of an extra-osseous, 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 traumatic avulsion of mandibular teeth numbers 23 to 26. Clinical 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 distraction 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, ten 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 extra-osseous distraction devices, which can increase alveolar bone volume, offers the implant surgeon an exciting, rewarding modality with which to correct ridge deficiencies.