Rescuing “hopeless” avulsed teeth using autologous platelet-rich fibrin following delayed reimplantation: Two case reports

Figure 5 Preparation process of the platelet-rich fibrin. A: The tube was immediately centrifuged at 400 × g for 10 min; B: The fibrin clot contained platelet-rich fibrin and was located in the middle of the tube; C: The clot was easily separated from the red corpuscles at the bottom; D: The platelet-rich fibrin membrane was cut into approximately 1 mm³ granules, and the red and white ends were mixed evenly.