After extraction, ice can be applied for 24-48 hours, but never more than 48 hours, and after 48 hours, it can be replaced by hot compresses to reduce swelling. The main principle of icing is to reduce blood circulation, reduce inflammation exudation and reduce the occurrence of facial swelling. After 48 hours, the inflammation has basically formed and the swelling of the face has basically stabilized, so you can promote the absorption of the inflammation and relieve the swelling by means of hot compresses. After tooth extraction, it is likely that pain will occur in the extraction incision area, and ice packs can relieve the pain. After the extraction, a sufficient amount of oral antibiotics should be taken, especially for patients with facial swelling, which can eliminate the swelling and promote the healing of the extraction wound. It takes about a week to heal, and after a week, the patient can chew normally on this side.