The Effect of Bovine Bone Graft With or Without Platelet-Rich Plasma on Maxillary Sinus Floor Augmentation

WOS: 000296071200015PubMed ID: 21798642Purpose: The purpose of this study was to compare Unilab Surgibone (USB) (Mississauga, Ontario, Canada), a bone xenograft (bovine), with platelet-rich plasma (PRP) and USB without PRP to augment the human maxillary sinus in preparation to receive dental implants. Patients and Methods: Patients who had bilateral pneumatized maxillary sinuses were included. Sinuses on one side were augmented with the USB-PRP combination and formed the study group, whereas the opposite-side sinuses were augmented with USB alone and served as controls. Bone biopsy specimens were taken during implant placement at 6.8 +/- 0.9 months after maxillary sinus floor augmentation. Resonance frequency analysis measurements were performed at implant placement (first control) and before the prosthetic stage (second control), at 6.5 +/- 0.7 months after implant surgery. Results: There were 10 patients (7 men and 3 women; mean age, 53.7 +/- 0.8 years). Integration between new bone and residual grafts was histologically observed in all samples. The volumes of soft tissue were 59.9% +/- 7.5% and 57.8% +/- 4.4% in the control and study groups, respectively; residual graft, 21.9% +/- 6.6% and 23.6% +/- 5.9%, respectively; new bone, 15.8% +/- 4.8% and 16.0% +/- 3.8%, respectively; and trabecular bone, 64.7% +/- 22.5% and 69.1% +/- 18.6%, respectively. A positive correlation was found between new bone volume and trabecular bone volume (P = .0001). The mean Implant Stability Quotient (ISQ) values were 71.7 +/- 4.9 and 70.3 +/- 5.7 in the control and study groups, respectively, at first control and 75.4 +/- 6.4 and 74.4 +/- 6.4, respectively, at second control. The mean ISQ values at second control in both groups were significantly higher than at first control (P = .043 and P = .028, respectively). No statistically significant differences were observed between groups (P > .05). Conclusion: The combination of USB and PRP does not have any effect on new bone formation and implant stabilization. (C) 2011 American Association of Oral and Maxillofacial Surgeons J Oral Mcaillofac Surg 692537-2547, 201