You can’t brush your teeth within 24 hours after tooth extraction, but you can brush your teeth normally after 24 hours to prevent the blood clot from dislodging and affecting the wound healing. 1. After tooth extraction, you need to bite a cotton ball for half an hour and then spit it out, so that the doctor can check the wound before leaving. You can’t brush your teeth and rinse your mouth on the same day, and you can eat two hours later, usually choosing some warm and soft food. Blood seepage from the wound after tooth extraction is a normal phenomenon, if there is a situation of spitting blood, you should go to the local medical institution in time. 2. 24 hours after tooth extraction, you can brush your teeth and rinse your mouth, try to choose a soft-bristled toothbrush when brushing your teeth, brush bristles generally choose the diameter of 0.2mm or less, 10-12 bundles of length, 3-4 rows of width, the top of the brush bristles are round or oval, to prevent gingival damage. Therefore, you can’t brush your teeth immediately after tooth extraction, you should brush your teeth after 24 hours.