1. Recognizing dry socket Dry socket is a common complication after tooth extraction, with an incidence of 5%-30%, most often occurring after the extraction of mandibular obstructive wisdom teeth. The main characteristics are: 1. severe pain appears three or four days after tooth extraction instead of immediately after tooth extraction; 2. pain often involves the ipsilateral ear and temple instead of being confined to the extraction socket; 3. the effect of oral anti-inflammatory and pain-relieving drugs commonly used is often not significant. 2. susceptibility to dry socket Dry socket is a localized osteitis that occurs in the extraction socket after tooth extraction. The cause is not clear, and may be related to tooth extraction trauma, infection, smoking, local anatomical factors, postoperative staying up late, overwork, etc. The greater the difficulty of tooth extraction, the longer the extraction time, the larger the extraction trauma, the poorer the patient’s resistance, and the inadequate postoperative extraction trauma care will increase the risk of developing dry socket. 3. Treatment and prognosis of dry socket The occurrence of dry socket will increase the patient’s pain to a certain extent, but there is no need to be overly nervous, as long as timely consultation and proper treatment, generally 1 to 2 weeks can be recovered. Treatment of dry socket: under local anesthesia, rinse and wipe the extraction sockets with hydrogen peroxide and saline, and then put on medication to stop bleeding and pain and promote healing (such as iodoform gauze), usually the pain symptoms will be relieved in one to two days, and if necessary, the medication should be changed again until the symptoms basically disappear. In view of the above susceptibility factors of dry socket, please take precautionary measures to reduce the occurrence of dry socket, and if similar symptoms occur, please seek medical attention in time.