Tooth extraction is the most commonly used treatment technique in dentistry, and many people suffer from local tissue damage caused by tooth extraction, resulting in bleeding, swelling, pain, etc. This requires good post-extraction care, especially some precautions need to be paid attention to. So what are the precautions after tooth extraction? 1. After tooth extraction, the gauze roll placed at the wound should be bitten tightly and spit out after half an hour to one hour. It is normal for patients to have blood in their saliva on the day of tooth extraction. 2. Do not lick the wound with your tongue or touch it with your finger, and do not stuff the wound with unsterilized paper, cotton, etc. to avoid infection and septicemia. If there is a blood clot infection in the alveolar sockets, mostly occurring 3-4 days after surgery, the blood clot becomes grayish brown, accompanied by corrupt and foul-smelling secretions, the alveolar bone wall loses the coverage of the blood clot and is exposed, the pain is more obvious, the medical term for this phenomenon is “dry socket”, and should be treated immediately. First, wash the wound with 3% hydrogen peroxide small cotton ball or repeatedly rinse with 1:5000 potassium permanganate solution, then put iodoform gauze in the sockets, also can add several drops of clove oil phenol or dicaine to help relieve pain, this method has the role of anti-inflammatory, antiseptic, and promote wound healing. This method has anti-inflammatory, antiseptic and healing effects. Change the medicine 2-3 times a week, and the pain will be relieved after 4-5 days when new granulation tissue grows, and the pain will disappear gradually with the increase of granulation tissue. 3. If there is active bleeding after tooth extraction and the bleeding amount is large, the patient need not be nervous, but should follow up immediately and ask the doctor to deal with it properly. For general bleeding, gelatin sponge or tannic acid powder or Yunnan Baiyao can be placed on the bleeding area, and then the bleeding can be stopped by biting down on the gauze roll for 30 minutes. If the bleeding still does not stop after these treatments, the cause should be further investigated and then treated. 4. Do not brush your teeth, rinse your mouth or smoke on the day of tooth extraction, eat soft food within 1-2 days, and the temperature of food should not be too high, so that the wound can rest locally. Intense gargling and brushing will easily rinse off or touch off the blood clot and cause bleeding. 5. For the more complicated tooth extraction, the wound sutures can be removed in 5-6 days, and pain relief and anti-inflammatory drugs can be taken in appropriate amount after the operation. The above is the introduction of “precautions after tooth extraction”. After tooth extraction, friends should pay attention to the early recovery with good care and health care.