Evaluation Of Autologous Bone Grafts From Calvaria For PreImplant Purpose

Objective: The aim of this work is to evaluate the peri-implant bone resorption in areas rehabilitated with autologous grafts from calvaria at 10 years after the placement of bone graft. Method: We selected 20 patients with severe bone atrophy, class F according Chiapasco. The implants were inserted in areas rehabilitated after 4 months of first surgery. Revaluations have been made with specific radiographic and trought the evaluation of clinical parameters of patients at 3, 5, 7 and 10 years after the placement of the grafts. During these revaluations have been carried out TC DentaScan of the upper jaw, in order to assess whether bone resorption of the grafted areas and the absence or presence of peri-implant radiolucency. Were clinically evaluated 139 implants inserted in grafted sites through the following parameters: 1) Absence of persistent pain or Dysaesthesia 2) Absence of peri-implant Suppurative infections 3) Lack of Mobility. The data obtained were cataloged and has made a statistical analysis that results on bone resorption in the maxilla, the distribution of peri-implant bone remodeling over the years and evaluations of peri-implant clinical parameters. Result: The distribution of changes in bone remodeling was consistent with resorption of 0.1 mm/year for ten years with peaks at 2 months and 4 months, during the proliferative phase and immediately after prosthetic loading. Most of the resorption was still in the first year with an average of 0.2 mm. From the clinical parameters of 139 implants placed, 10 years later, no implant has been lost or removed, showed no implant mobility, causing pain, infection or showed a radiolucent device. Conclusion: The low degree of resorption and the initial osteoregenative thrust with the evidence of our data, assert that, despite the high cortical component, biologically and clinically from autologous bone grafts in Calvary represents the gold standard in block grafts.