Pain after tooth extraction is generally a normal physiological phenomenon, especially common in more traumatic tooth extraction, such as ambulatory wisdom teeth after extraction, due to the extraction of large traumatic longer, the operation often involves cutting the gums, flap and bone and other traumatic operations, there will be obvious swelling and pain in the process of the postoperative period. In general, swelling and pain is gradually reduced over time, for the pain of symptomatic treatment is good, if necessary, you can use pain medication. If more than 3 days after the extraction, the wound suddenly appeared more severe pain, accompanied by redness, swelling or pus overflow of the extraction wound, then it is not physiological pain, but to consider the pathologic pain postoperative infection, need to go to a professional dentist as soon as possible.