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Introduction. In order to provide the most favorable conditions for bone healing following implant loading, new techniques such as the use of growth factors to directly or indirectly regulate cell and tissue growth are becoming increasingly popular. Simplicity in producing concentrated thrombocytes derived from platelet-rich plasma has led to increasing application of growth factors derived from thrombocytes, such as PDGF, TGF-β, IGF and VEGF, in order to increase the percentage of bone-to-implant contact that provides better implant stability and possibly earlier functional loading. The aim of the study was to determine the effects of platelet-rich plasma and guided tissue regeneration on bone regeneration in the case of bone defects in early dental implant insertion.
Materials and Methods. This experimental study was conducted on 10 study dogs that received 40 BCT implants, i.e., 4 implants per dog. The study included early dental implant placement in the sites of the extracted premolars. Artificial bone defects, resembling peri-implantitis defects, were made on the mesial side of each site, and the defects were filled using suitable guided tissue regeneration protocols with platelet-rich plasma derived from each experimental animal an hour before surgery. Histopathologic and histomorphometric evaluations were performed 10 months following the implantation.
Results and Conclusion. The applied protocols had different effects on bone healing. According to the results obtained, the use of platelet-rich plasma combined with deproteinized bovine bone and bovine-derived resorptive membrane provided superior bone defect ossification.
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