The chin surgery can effectively improve the chin recession, chin protrusion and other problems, can significantly improve the face value of the candidates. However, with age, chin surgery will gradually highlight certain hazards, as follows: 1, the prosthesis removed retraction: 7-8 years after the silicone prosthesis chin surgery, candidates need to do regular MRI examination to avoid the phenomenon of silicone cracking, once the abnormal, silicone prosthesis need to be removed, older chin in the removal of prosthesis will have local swelling and retraction phenomenon, and retraction phenomenon generally It takes 2-3 months to gradually recover; 2, chin hardening: Although the safety of silicone chin pad is relatively high, however, some candidates will have a hardened chin, mostly because of the violence of the doctor’s technique, which leads to excessive bleeding, the formation of hematoma, and the phenomenon of silicone contracture; 3, the prosthesis exposed, crooked: older and longer chin pad people will find that the prosthesis is easy to When the chin is touched by hand, the implanted silicone prosthesis can be felt shaking under the skin, often due to the imprecise location of the implant, resulting in the implant being exposed and skewed after many years.