Introduction: The performance of implant surgery in the posterior maxilla often poses challenges due to insufficient available bone. Sinus floor
elevation is developed to increase needed vertical height to overcome this problem. Many grafting materials had been used to augment subsinus
area. Recently, several authors have shown that simultaneous sinus lift and implantation using autologous platelet-rich fibrin combined with
biphasic calcium phosphate as a grafting material is a reliable procedure promoting bone augmentation in the maxillary sinus.
Objectives: This study was aiming to evaluate bone formation after maxillary sinus membrane elevation using lateral window technique and
simultaneous implant placement using biphasic calcium phosphate combined with platelet rich fibrinas agrafting material.
Materials and methods: The present study was conducted on ten patients with age ranged from 30-50 years seeking implantation of their lost
posterior maxillary teeth, and had limited bone height below the floor of the maxillary sinus, secondary to sinus pneumatization. Patients were
selected on the basis of history, clinical examination and radiographic examination using panoramic radiography and cone-beam CT.
Conclusion: Platelet-rich fibrin in addition to biphasic calcium phosphate may favor the formation of new bone after maxillary sinus augmentation.
The effectiveness of PRF depends not only on its features but also the properties of co-administered grafting material.