When can you drink from a straw after getting a tooth pulled?

My dentist said not for three days. It is NOT advised to drink from a straw after oral or sinus surgery until you are healed to a degree that your doctor will advise. Why? Because your body is responding to the wound with a delicate process of wound healing that is very delicate in the early stages. It forms a clot that works as a foundation for the bleeding to stop and the healing to begin. If you create negative pressure (by sucking on the straw) the same action that draws liquids up from the cup, pulls on your surgical site. This can pull the clot out, leaving you bleeding and further exposing your wound to all the bacteria in your mouth, which increases the chances of infection. Be certain to follow your post operative directions VERY carefully and take fluids with a cup or spoon.