Chin pads may appear chin hardening, prosthesis translucency, infection and other hazards. 1. Chin hardening: Silicone and expandable body are commonly used chin pad prosthesis, the operation process due to improper operation, can lead to the formation of hematoma, further lead to silicone periosteal contracture, with the prolongation of the time of placement of the prosthetic tissues, the chin will gradually become hard. 2. Prosthesis translucent: to a certain extent, the chin pad silicone material will stimulate the body’s tissue cells, resulting in skin thinning, subcutaneous tissue thinning, subcutaneous capillary expansion and congestion of the performance, so that the chin part in the bright light, translucent phenomenon. 3. Infection: If the bentonite carving is too long, it can increase the time that the bentonite is exposed to the air, which leads to the growth of bacteria, and when the bentonite with bacteria is implanted in the chin, it will cause infection. It is recommended that you should choose a regular hospital, under the guidance of a regular qualified physician, choose a safe and reliable material filler to improve the safety and reliability of the operation.