You should not brush your teeth or rinse your mouth after a tooth has been extracted. In general, it is recommended to brush and rinse 2 days after the tooth extraction, in order to protect the oral wound of the extracted tooth, so that the tooth socket can be quickly and the blood clot can be better formed to help stop the bleeding and the wound after the tooth extraction can heal better. When you brush and rinse your mouth after 2 days, you must be gentle, and when you rinse your mouth, you must be careful not to rinse off the blood clot, and when you brush your teeth, you must be careful not to stimulate the tooth socket on the side where the tooth was extracted as much as possible. If the clot is dislodged, it is likely that the wound will continue to bleed more than once, and there will be infection and even dry socket.