1. ㅇㅇㅇ Oral and maxillofacial surgery showed before and after chin tip advancement, and it went well. It's good that you said that you can move your chin forward with a double osteotomy, but I'm worried because I have a long chin, but I asked not to reduce it... The consultation with the director was short. 2. ㄱㅎ I had a long consultation with the director. I was only planning to do the chin advancement surgery, but I was also advised to do something else. Tell me what works and what doesn't work, and be honest.