The better biomaterial The Protocol (automatic and inexpensive) permits to get fibrin clots rich in platelets and growth factors (PDGF, TGF Béta, VEGF, Throbospondin 1). The Fibrin, better scaffold for all healing processes plays a key role in the different stages of bone and soft tissue healing. The growth factors are released slowly and progressively during more than 7 days. This slow release permits to understand and to explain the meaningful clinical results gotten with the . With the PRF BOX, you can produce constant and thick membranes of fibrin rich in growth factors.