The risks of tooth extraction are as follows: first, the risk of anesthesia. If the patient himself is allergic to anesthetics, there is a high risk of shock reaction to anesthesia, and there is also a risk of anesthetic poisoning. Secondly, if the patient himself suffers from hypertension, diabetes and heart disease, if the extraction is performed when the disease is not effectively controlled, there is a high risk of induced hypertension, which may cause life-threatening and also heart attack, all such risks are very high. For diabetic patients, tooth extraction without good control of blood sugar may lead to non-healing of the extraction socket. Thirdly, during the extraction process, the risk caused by the location of the extracted tooth may lead to maxillary sinus fistula or damage to the inferior alveolar nerve in the upper jaw.