You can brush your teeth normally 24 hours after wisdom tooth extraction, when it is safer to brush your teeth. If you brush your teeth or rinse your mouth within 24 hours, the blood clot in the extraction wound will be dislodged, resulting in secondary bleeding, hematoma, infection and other complications after the extraction. The precautions to be taken after tooth extraction are as follows:1. After tooth extraction, you should bite a clean cotton ball or gauze at the location of the extraction wound for pressure to stop bleeding, which usually takes 0.5-1 hour.2. You can’t brush your teeth, gargle or lick or suck the wound within 24 hours after tooth extraction.3. It is recommended to eat warm, cool, and soft food after tooth extraction, and you can’t eat food that is too hot, too cold, or too hard, and you can’t eat spicy and stimulating food, and you can’t smoke or drink. 4. 4, after the extraction of teeth, two days after the extraction of teeth, can not carry out strenuous exercise or heavy physical labor, can not take a hot bath, after the extraction of teeth should pay attention to rest, do not over-tired.