Controlled Release Strategies for the Combination of Fresh and Lyophilized Platelet-Rich Fibrin on Bone Tissue Regeneration

Figure 1

Macroscope and scanning electron microscope (SEM) analysis of fresh and lyophilized PRF. (a) Blood centrifugation immediately after collection allowed the composition of a structured and resistant fibrin clot (PRF) to be in the middle of the tube, just between the red corpuscles at the bottom and acellular plasma (PPP) at the top. (b,c) were macrophotographs of fresh and lyophilized PRF preparations. (d-g) were SEM at 500-fold magnification (d,e) and 2000-fold magnification (f,g). (b, d, f) were from fresh PRF and (c, e, g) were from lyophilized PRF.