ارزيابي كلينيكي افزايش ضخامت عرضي ريج با تكنيك اينترپوزيشنال با استفاده از ماده Bio-oss مخلوط با استخوان اتوژن (يك مطالعه اوليه)

Clinical Evaluation of Lateral Ridge Augmentation by Interpositional Bone Graft Method, Using a Mixture of Bio-oss and Autogenous Bone (A Pilot Study)

Introduction: Shortage of bone, especially in sagittal dimension, is of great importance in preventing proper positioning of dental implants. The aim of this study was clinical evaluation of interpositional technique using the mixture of Bio-oss and autogenous bone. Materials & Methods: In this clinical trial study, four Patients took part in the present study who had reduced width of ridges. Augmentation surgery was performed under local anesthesia as follows: A horizontal incision was performed on soft tissue slightly lingual to the crest of edentulous ridge. A mucoperiosteal flap was elevated. A horizontal cut was made along the crest of bone and two vertical bony cuts were done at buccal side of the ridge. A green stick fracture was created at base of the buccal plate using a surgical chisel and buccal plate was mobilized gradually to create a furrow between buccal and lingual plates. This space was filled with a graft material consisted of the mixture of Bio-oss and autogenous bone harvested from symphysis. Then and the flap and tension free edges of flap were sutured. Six month later, the study cast was prepared and all measurements were repeated and results were analyzed statistically by paired /-test. Results: The mean ridge width increase was 3.56+0.78 mm and the width of ridge significantly differed after augmentation (P=0.001). Mean vertical bone loss was 0.75±0.93 mm and the reduction was not statistically significant (P=0.056). Conclusion: This study demonstrated that interpositional technique using the mixture of Bio-oss and autogenous bone was a valuable technique for lateral ridge augmentation.