There is no obvious danger period after tooth extraction, but care needs to be taken to bite down on the gauze cotton roll for half an hour after extraction and avoid stimulation of the extraction site, such as brushing and rinsing, for 24 hours after extraction to reduce bleeding after extraction. Besides, you should also be alert to the occurrence of complications 2-3 days after tooth extraction and seek medical treatment promptly when painful symptoms or serious swelling does not subside. Tooth extraction is a relatively safe clinical procedure with a low risk factor in general. Some patients may experience slight swelling and pain in the cheeks after tooth extraction, which can generally subside on their own after a few days without special treatment. It is recommended to pay attention to oral hygiene and keep the oral cavity clean after the operation to reduce the occurrence of complications such as extraction wound infection or dry socket. If there is pain and swelling around the tooth and restricted opening after tooth extraction, it may be a case of post-extraction wound infection, and it is recommended to seek medical attention and use antibiotic drugs such as metronidazole and amoxicillin for treatment under the guidance of the doctor. In addition, if the pain after tooth extraction is severe and radiating, spreading to the auriculotemporal region, jaw region or top of the head, and cannot be relieved by pain medication, it may be caused by dry socket. In addition to applying antibiotics, it is necessary to clean and disinfect the socket and place iodoform gauze in the socket under the guidance of the doctor until the socket gradually heals. Patients with coagulation disorders or diabetic patients may have a higher risk of local bleeding or infection if they undergo tooth extraction, so they should communicate with their doctors about their suitability before extraction to avoid adverse consequences.