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BVS Odontologia

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[Platelet rich plasma (PRP) as adjuvant tool for bone augmentation].

Luboshitz, J; Berger, U; Yaari, O; Wiessman, A; Moshonov, J.
Refuat Hapeh Vehashinayim (1993); 21(1): 63-70, 103, 2004 Jan.
Artigo em Hebraico | MEDLINE | ID: mdl-15065386
New bone formation requires sufficient number of osteogenic progenitors capable of forming the bone desired. The site of engraftment must be filled with a matrix that facilitates attachment, migration and differentiation of osteoblastic progenitors. It is also necessary that the cells receive stimuli by growth factors that allow them to progress toward a bone phenotype. Another critical step in new tissue formation is the construction of new blood vessels--angiogenesis. Platelets contain growth factors that induce osteoinductive stimuli and accelerate angiogenesis. One strategy for harnessing this benefit is to apply platelet rich plasma (PRP) to bone graft site. The present article review platelets and growth factors physiology. We discuss the interaction between growth factors, thrombin and cells that form bone and blood vessels osteoblasts, mesenchimal stem cells and endothelial cells. Methods and defaults of PRP preparation and safety issues are presented. The knowledge of platelet physiology and the mechanism by which growth factors effect cell proliferation and differentiation allow the dental surgeon to properly use this treatment modality and to achieve the ultimate goal of durable and effectively functioning bone.