Removing sutures 4 days after extraction is a bit early. It is generally recommended that sutures be removed 5-10 days after wisdom tooth extraction, and clinically, 7 days is usually the limit, and it is recommended that the patient can go to the hospital for examination at 7 days to see if the sutures can be removed. Remove sutures too early, the extraction wound may not heal perfectly, and the oral cavity belongs to the bacterial environment, will not heal very quickly, too early removal of sutures will cause the wound of the extraction wound tearing, secondary bleeding, infection may occur. If the sutures are removed too late, the extraction wound will have already healed, and the sutures will be equivalent to a foreign object in the oral cavity, which will also cause secondary bleeding and infection. It is important to choose the appropriate time to remove sutures after wisdom teeth extraction, usually 5-10 days.