Tooth extraction is the most common treatment technique in dentistry, because tooth extraction can cause damage to local tissues, resulting in bleeding, swelling, pain and other reactions, so it must be treated with caution. Do not brush your teeth or rinse your mouth for 24 hours, and do not take a hot bath; 4. Do not eat within two hours of tooth extraction, and after two hours, you can eat soft food or cool food, and the food should not be too hard, too hot or spicy; 5. It is necessary to strictly follow the medical advice after tooth extraction to avoid aggravating the postoperative reaction.