Objective of the present study was to evaluate the effect of calcium phosphate bone cement (calcibon) on bone formation in patients undergoing maxillary sinus lifting with simultaneous dental implant application. Twelve patients with partial posterior maxillary edentulism who needed sinus lift and bone augmentation were included in the study. The selected patients were randomly classified into two groups, each group had a total of 6 cases undergone sinus augmentation using lateral sinus lifting approach with simultaneous dental implant placement, where group A underwent sinus lifting simultaneous with implant placement, then an autogenous corticocancellous bone graft harvested from the chin was applied to the new sinus floor area around the implants, and group B undergone sinus lifting simultaneous with implant placement, then the injectable calcium phosphate bone cement was applied to the new sinus floor area around the implant. (Calcibon, Biomet Company, Berlin Germany).Group A showed better results than Group B according to the bone density results. Increase in the bone density at all the postoperative intervals. Autogenous bone graft enhances bone regeneration in sinus augmentation with simultaneous dental implant placement.