Brief Background Rehabilitation of edentulous posterior atrophic maxilla has always been an exigent task in the field Implantology. Studies have shown, the use of Choukron’s platelet rich fibrin as a sole grafting material in sinus floor and immediate implant placement leading to bone formation in the peri-implant region. Purpose of the Study This study was conducted as novel research where, Direct Sinus Membrane elevation and simultaneous Implant placement without any bone graft resulted in bone formation in sub-antral space. This study compares and evaluates the bone formation with the help of Cone Beam CT Scan (CBCT) in sub-antral space following direct sinus membrane elevation and simultaneous implant placement and platelet rich fibrin as the sole graft. Materials and Methods 48 patients who fulfill the inclusion criteria were divided as Group I- direct sinus membrane elevation and implant placement without any graft and Group II- direct sinus membrane elevation and implant placement along with PRF as sole graft Results and Analysis Unpaired‘t test’ was used where, we ‘p’ value was compared with the level of significance. On comparing the peri-implant bone density in Hounsefield units, in CBCT scans; the bone density was more in group II which was statistically significant (p<0.05). Summary and Conclusions PRF has proved to be a valuable autologous augmenting material in direct sinus membrane elevation and simultaneous implant placement in edentulous posterior maxilla. Key Words Hounsefield Units, Sub-antral space, Peri-implant, Cone Beam CT Scan.
Blood clot stability and bone formation following maxillary sinus membrane elevation and space maintenance by means of immediate implant placement in humans. A computed tomography study