Smoking is not recommended after tooth extraction, but if you have already smoked, there is no need to worry too much, it is enough to observe the extraction wound closely and check that it is not bleeding and healing itself. In general, for more traumatic tooth extraction, just after the extraction of teeth, because the blood clot of the extraction wound is still unstable, and the granulation tissue of the extraction wound has not yet begun to grow, premature smoking may cause the corresponding oral cavity to form a clear negative pressure environment, which will cause the pressure of the extraction wound to increase, and the risk of loosening of the clot and bleeding of the extraction wound will be increased. This is a relative risk and is not 100% likely to occur, so there is no reason to be overly concerned if you have smoked and there is no definite bleeding. In addition to the risk of bleeding from the extraction wound, the substances in tobacco can also affect the healing of the extraction wound. Moreover, long-term smoking can have a greater impact on the patient’s periodontium, causing a high incidence of periodontitis. From this point of view, patients can use tooth extraction as an opportunity to quit smoking.