Histomorphologic, Biomechanical, and Functional Analysis in Mandibular Osteogenesis Induced by External Distraction.

The induced bone generation procedure (osteogenic distraction [OD]) is frequently used in cases of jaw deformities in patients with, hemifacial microsomia, mandibular hypoplasia, and so on. This study was undertaken to provide criteria to perform this procedure. The authors evaluated the effects of various parameters using OD to determine the optimal variables. Sixty distractors were placed in 30 canine subjects who then underwent OD after appropriate osteotomy. The procedures were performed during varying latency periods, distraction periods, distraction rate distance, and the consolidation period. Bone biopsies and radiographic studies were performed at 0, 7, 14, 21, 45, and 55 days after the distraction process. The observed changes and the most efficient mandibular OD parameters are reported.