Mandibular bone resurfacing surgery is risky and may have sequelae such as sunken face, facial paralysis, causing facial asymmetry, and loss of lip perception. 1. Sunken face: Mandibular bone resurfacing surgery will easily cause bone depression, which will easily form a sunken face. 2. Hemorrhage and facial paralysis: it is easy to cause damage to blood vessels and facial nerves, resulting in hemorrhage, even life-threatening, and may also cause facial paralysis. 3. Asymmetry of the face: after the surgery, it is easy to cause asymmetry of the face. 4. Loss of lip perception: During bone grinding surgery, it is easy to injure the nerves, and if the chin nerve is irritated, it may lead to loss of lip perception. If you want to do jaw bone grinding surgery, you need to pay attention to, must go to the regular hospital to reduce the risk of surgery.