Swelling after wisdom tooth extraction usually subsides 3~5 days after extraction. If chronic infection or acute infection occurs, the swelling cannot subside by itself and lasts for a longer period of time. Chronic infection requires the removal of irritating factors, and acute infection requires incision and drainage.
1. Postoperative swelling reaction: it is a complication of tooth extraction, which is related to the trauma of flap turning, the incision of the flap is too low or the suture is too tight, the postoperative swelling usually starts 12~24 hours after the operation, and it will gradually subside in 3~5 days.
2. Chronic infection: after tooth extraction, foreign objects and inflammatory granulation tissue in the alveolar fossa may lead to chronic infection of the extraction wound, resulting in swelling, which cannot subside on its own and lasts for a long period of time, and it is necessary to remove the foreign objects and inflammatory granulation tissue, so as to make the extraction wound heal again.
3. Acute infection: acute infection after tooth extraction can cause maxillofacial gap infection, resulting in swelling, which cannot subside by itself and lasts for a long time, incision and drainage can relieve inflammation and reduce swelling.
If the swelling is serious and does not improve, it is recommended to go to the hospital in time to receive professional treatment as soon as possible.