fig14

Figure 14. Two-layer grafting technique for dorsal augmentation using diced costal cartilage and PRF. (A) Separation of blood into three layers after centrifugation. The middle PRF layer is collected along with a portion of the upper platelet-poor plasma layer; (B) Diced cartilage, carved cartilage graft, and PRF; (C) Diced cartilage glued with PRF, molded into a dorsal graft, and covered with perichondrium; (D) Two-layer grafting technique: carved rib cartilage, diced cartilage mixed with platelet-rich fibrin, and perichondrium. PRF: Platelet-rich fibrin.