It is not recommended to smoke after tooth extraction, but if you have already smoked there is no need to worry too much, observe the extraction wound closely to see if there is bleeding and healing. For more traumatic tooth extractions, the blood clot in the extraction wound is not yet stable and the granulation tissue has not yet started to grow, so premature smoking may cause a definite negative pressure environment in the mouth, thus causing an increase in pressure in the extraction wound, resulting in an increased risk of loosening of the blood clot and bleeding in the extraction wound, which is only a relative risk and not 100%. If there is no clear bleeding after smoking, there is no need to worry too much. However, in addition to the risk of bleeding caused by tobacco, the substances in tobacco will also affect the healing of the extraction wound, and long-term smoking will have a greater impact on the patient’s periodontium, causing a high incidence of gingivitis and periodontitis, so from this point of view, the patient can use the extraction as an opportunity to quit the habit of smoking.