Changes of alveolar ridge dimension after autogeneous mandibular bone augmentation with split bone block technique

Abstract

Objectives: the aim of study is to evaluate the changes of alveolar rigde dimension after split bone block technique with autogenous bone block graft from mandible on CBCT. Methods: A case series study on 10 patients who had alveolar ridge defects (≥4 mm). The patients treated by means of split bone block technique with autogenous bone from mandible, followed by delay implant placement. Scan data from dental waxed-up model and preoperative and postoperative CBCT data were superimposed and then used to measure the changes of alveolar dimension. Results: Preoperatively, the mean alveolar dimension was 2,46±0,83 mm in width and 9,38±1,48 mm in height. After 4 months, the mean alveolar dimension increased to 7,68 ±1,35 mm in width and 12,60±1,83 mm in height. The mean dimension gained 5,22±1,59 mm horizontally and 3,21±1,26 mm vertically. Conclusion: This study results suggest that split bone block technique with autogenous bone block from mandible is effective in increasing the three-dimension alveolar ridge with more 4mm defect.