RESUMENLa fibrina rica en plaquetas es un concentrado plaquetario de segunda generación, del cual podemos obtener un coágulo y/o una membrana con gran cantidad de factores de crecimiento, leucocitos y citoquinas, esta se consigue activando la cadena de coagulación mediante la centrifugación de sangre autóloga. En este protocolo no se manipula químicamente la sangre, lo que la convierte en una técnica accesible y sencilla para ser usada en la práctica clínica diaria. El presente caso describe la preservación de reborde post exodoncia del remanente radicular de la pieza 1.5. mediante exodoncia atraumática y la utilización de la fibrina rica en plaquetas obtenida con el protocolo de Choukroun como biomaterial de regeneración. El coágulo de fibrina fue dividido en dos partes, una parte como material de relleno autólogo (osteoinductor, osteoconductor) y otra como membrana autóloga para evitar el colapso del alveolo. A la evaluación clínica y radiográfica de seguimiento (1 mes y 12 meses), se evidencia la regeneración de la zona intervenida y la favorable evolución clínica. ABSTRACTThe platelet-rich fibrin is a platelet concentrate of second generation, from which we can get a clot or a membrane with large number of growth factors, leukocytes and Cytokines, this is achieved by activating the chain through coagulation the centrifugation of autologous blood. In this Protocol not manipulated chemically blood, making it an accessible and simple technique to be used in daily clinical practice. This case describes the preservation of post extraction of the root remnant of the 1.5 piece flange. through Atraumatic extraction and the use of platelet-rich fibrin obtained Choukroun as biomaterial of regeneration Protocol. Fibrin clot was divided into two parts, a part as filler material autologous (osteoinductive, osteoconductive) and other such as autologous membrane to prevent the collapse of the alveoli. The clinical and radiographic evaluation of follow-up (1 month and 12 months), there is evidence of the regeneration of the area intervened and favorable clinical evolution
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