Hello, the price of mandibular angle grinding is about 30 thousand. Bone grinding surgery is a major operation. It is generally recommended to stay in hospital for 5-7 days, eat liquid food for 3-5 days after operation, and eat semi-liquid food for 5-7 days after operation. Use soft and warm food and avoid eating hot food or irritating food. You can eat as usual after 7- 10, and the swelling will be reduced in about half a month. It takes three months to six months to fully recover.