ABSTRACT
Background: Restoring posterior maxilla with implants is challenging due to lack of bone
quantity and quality.
Objective: Assess the effect of adding platelet rich fibrin (PRF) to bovine bone mineral (Bio
oss) as sinus graft with simultaneous implant placement.
Patients and methods: Sixteen implants were placed in 16 augmented sinuses divided into two
groups; the first (study) group sinus augmentation was done using Bio oss and PRF and the second
(control) group using Bio oss alone. Implant stability and bone density were assessed.
Results: The sinuses grafted with Bio oss mixed with PRF showed significantly higher bone
density and implant stability after 6 months.
Conclusion: The use of Bio oss mixed with PRF as a graft materiel in sinus lifting procedure
is highly superior to Bio oss alone with respect to the implant stability and bone density around the
implant.