One day after tooth extraction, the blood clot is dislodged. In fact, in many cases, it may be that the blood clot located outside the extraction socket was spit out by the patient, so that the patient found it and mistook it for the dislodgement of the blood clot inside the extraction socket. Under normal circumstances, the clot is not easily dislodged unless the patient does something to stimulate it, such as picking it with the hand or licking it with the tongue. If there is indeed a void in the extraction socket, you can ask the doctor to scrape away the surface material so that there will be some bleeding in the socket and the clot will be re-formed at this time, then the patient must pay attention to protect the clot after returning home. 2 hours later, you can eat warm, cool and soft things, and do not brush your teeth or rinse your mouth for 24 hours so that the clot will not fall off again.