You can drink yogurt two hours after a tooth extraction. Yogurt is nutritious and rich in protein, which is helpful in promoting wound healing. About two hours after tooth extraction, you can start to eat warm cold fluid stream, you can drink yogurt, but do not use a straw to suck yogurt. This is because there is negative pressure when sucking with a straw, which may affect the formation of blood clots. If the blood clot is dislodged, it is likely to cause postoperative infection. So you can drink yogurt with a small spoon after tooth extraction. After tooth extraction, pay attention to timely care, after drinking yogurt, you can use saline or water, gently rinse your mouth, because yogurt is a more delicate food, food residue is easy to accumulate in the tooth socket, which will lead to wound infection. After the extraction of teeth should follow the doctor’s instructions to do a good job of postoperative care, pay attention to the diet should be light and safe, to promote the wound to heal as soon as possible.