The pain on the third day after wisdom tooth extraction is more than the second day. It is difficult to determine whether the pain is physiological after surgery or whether it is caused by postoperative infection. In general, for wisdom tooth extraction, especially for more traumatic wisdom tooth extractions, such as the extraction of ambiguous wisdom teeth, the procedure involves gingival incision, flap removal, alveolar bone removal and tooth division. After this type of surgery, there is a normal postoperative reaction, which is postoperative swelling and pain, due to the long and traumatic surgery. This swelling and pain sometimes does not reach its most pronounced stage at the beginning. Instead, it reaches a peak on the second to the third day after surgery, and then gradually subsides. Therefore, if the pain is worse on the 3rd day than on the 2nd day after the extraction, it is indeed not easy to judge at this time, so you can observe it for 1 more day or go directly to the dental department of the hospital to check. If the trend of pain is getting less and less, and the patient has no other discomfort, then it can be considered physiological pain, and symptomatic treatment is good. However, if the pain continues to worsen, accompanied by the odor of the mouth and the redness and swelling of the extraction wound and the overflowing of pus, there is a possibility of post-extraction infection, and it is necessary to go to the professional stomatology department for professional treatment as soon as possible.