Study of the Effect of the Combination of Platelet-Rich Fibrin (Prf) and Allogenous Bone Graft Around Immediate Implants

Abstract

INTRODUCTION: Following the immediate implant placement, there is a gap called jumping space which increases the risk of implant failure. OBJECTIVES: The aim of the study was to evaluate the clinical and radiographic efficiency of platelet-rich fibrin membrane (PRF) combined with bone graft surrounding immediate implants in fresh extraction sockets. MATERIALS AND METHODS: A clinical and radiographic study was carried out on ten fresh extraction sockets with age range from 20 to 50 years. Sockets were occupied by immediate endosseous implant and grafted with allogenous bone graft and PRF. After placement all implants were evaluated clinically after 6 months (modified sulcus bleeding index, probing pocket depth and degree of mobility) and radiographically to evaluate marginal bone loss. RESULTS: There was less pain, edema, bleeding and probing depth in the study group than in the control group but the difference among them was not statistically significant (P > 0.05). There was significantly more bone density and less marginal bone loss in the study group than in the control group on the sixth postoperative month (P < 0.05). CONCLUSIONS: It is clear that PRF is biocompatible and can improve both soft tissue healing and bone regeneration after immediate implant placement.

Bone Ring Autogenous Graft and Immediate Implant Reconstruction in Atrophic Posterior Mandibular Area

“…The operations were done from January 2018 to September 2019. Selection of patients was done according to inclusion criteria, the patients were over 18 years old and had fresh defective extracted sockets in mandibular posterior area in comparison to adjacent teeth, gingival recession and with mobility not more than grade I, no signs and symptoms of inflammation, or previous history of incomplete traumatic extraction (6) .The exclusion criteria included, systemic diseases that could affect or interfere with normal bone healing and osseointegration, presence of any periapical pathology, parafunctional habits, pregnancy, heavy smoker and alcohol abuse (7) . In accordance with the Declaration of Helsinki, a written informed consent was taken from all patients, and the study was approved by local ethics review committee of the Faculty of Dental Medicine at Al-Azhar University for Girls.…”

“…The size of trephine bur for the donor site was larger than the size of the trephine bur that was used for socket preparation to receive the bone ring. The most common sizes used were (11,10,9,8,7,6,5) which represent the outer circumference of the trephine bur the internal lumen of trephine bur is 1mm less than the written size (11) .…”

Narrow Ridge Expansion for Implant Placement Using Ultrasonic Bone Surgery and Platelet Rich Fibrin With and Without Silk Fibroin.

“…Platelet rich fibrin (PRF) has been widely used for this purpose. It can be used alone (7)(8)(9) or in combination with other biomaterials (10,11) . Platelet-rich fibrin (PRF) has numerous growth factors and cytokines, which accelerate early bone regeneration by increased angiogenesis, chemotaxis, mitosis, and stem cell proliferation (12) .…”