2. Autologous cartilage in chin pad materials generally comes from costal cartilage, and the size of cartilage here is suitable for chin pad surgery. Autologous cartilage has the advantages of high affinity, no rejection and good fixation after transplantation. However, autogenous cartilage cushion chin also has shortcomings. The chin shape requires fine symmetry, but the cartilage is brittle and difficult to shape, so it is necessary to take costal cartilage from itself. Some people flinch when they hear it.