You can usually brush your teeth after 24 hours after a tooth extraction. Blood oozes out within 24 hours after tooth extraction, and most patients can stop bleeding the next morning, so it is often recommended that you do not rinse your mouth or spit more than once within 24 hours after tooth extraction to prevent bleeding or infection. Do not suck or spit out blood clots repeatedly due to the taste of blood in the mouth, and do not probe the wound after tooth extraction with your tongue to avoid non-healing of the wound. It is best not to eat for 2 hours after the tooth, and eat soft food, fluid or semi-fluid on the same day, warm and cold is preferred, do not eat too hard, too hot food. Use the other side to chew. Tooth extraction is one of the commonly used treatment techniques in dentistry. It is suitable for patients who cannot be cured and preserved from various dental diseases; patients who have symptoms from various misaligned, blocked and ambulatory teeth; patients who have pathogenic or focal teeth that cause other diseases; patients who have the last misaligned tooth that does not have an opposing tooth in the jaw.