الفهرس 
Title: Effects of the platelet-rich fibrin (PRF) on bone density in immediate implant placement and loading in esthetic zone : A randomized clinical tria
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Abstract
Decayed teeth present several problems that affect function and esthetics specially if it’s present in the esthetic zone.The present study was conducted to evaluate bone density using CBCT around immediately placed and loaded implants with the addition of PRF in the esthetic zone. The patients were selected from the out patient Dental Implant Clinic Faculty of Dentistry, Cairo University, based on inclusion and exlusion criteria. The sample of the study consisted of 14 patients with decayed maxillary teeth present in the esthetic zone.The patients were examined clinically and radiographically. The patients were selected from the outpatient Dental Implant Clinic, Faculty of Dentistry, Cairo University based on the inclusion-exclusion criteria. Patients were divided in to two equal groups: group A: Immediate implant placement and loading with PRF in jumping gap at site of unrestorable extracted teeth in esthetic zone.group B: Immediate implant placement and loading without PRF in jumping gap at site of unrestorable extracted teeth in esthetic zone. After implant placement and loading CBCTs were taken at 0,3,6,9 month. Bone density was measured at 0, 3, 6, 9 month for both groups.The collected results were tabulated and statistically analyzed. The results of this study showed that the PRF group had higher bone density and there was statistically significant difference between (PRF) and (no PRF) groups in bone density values in 3,6 and 9 months intervals