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Abstract
Introduction: With age, the sinus walls becomes thinner gradually and leads to sinus pneumatisation in the posterior maxilla which complicates implant placement. Sinus floor augmentation is one of the most important approaches to increase the remaining bone height in the maxilla; to provide sufficient bone for implant stability. Aim of the study: The objective is to test the hypothesis that there is no difference in implant treatment stability outcome using PRF over (in comparison to) autogenous bone graft for internal sinus floor augmentation. Results: Radiographic assessment showed both PRF and autogenous groups resulted in gain of subsinus height when baseline and postoperative readings were compared after 6 months. PRF showed promising augmentation results in implant stability using periotest measurements compared to autogenous bone augmentation although statistically non-significant.There was no statistically significant difference between mean % changes in Periotest scores of the two groups were the level of significance was P {u2264} 0.05. Discussion and conclusion: Results of the present study was in accordance to the results of the previous studies by were they also showed promising results for implant stability when using PRF as a sole grafting material for sinus floor augmentation