You can brush your teeth 24 hours after wisdom tooth extraction, but you must be careful not to touch the extraction socket while brushing. When brushing the teeth near the socket, be sure to brush gently and pay attention to the force of your hand. You should not brush and rinse your mouth within 24 hours of tooth extraction, as this may cause the clot in the extraction socket to fall off and later induce infection and dry socket, and even bleeding. Dry socket is a very high complication because of the long extraction time and the low eruption direction of wisdom teeth, and the whole process of extraction is very complicated. Avoiding touching the extraction socket while brushing your teeth is to protect the clot in the extraction socket properly, and only with the presence of the clot can normal tissue grow into the socket and repair the extraction socket intact. After 3 months of wisdom tooth extraction, the extraction socket will be completely flattened and you can eat normally at this time.