How long do you have to wait to stop using straw after having tooth extraction?

Answer 1

Three days.

A Second opinion:

It is generally recommended to avoid using a straw or anything that would cause suction in the mouth (ie cigarettes) for two weeks following tooth extraction, particularly third molars.

The reason for this precaution is that immediately following the surgery, the nerves and bone are protected by a delicate and fragile blood clot. Any kind of suction can cause the premature loss of this blood clot, exposing the nerves and bone to the oral environment. This is extremely painful and can easily lead to a post-op infection. After about two weeks, the clot is no longer needed because epithelium (skin) has grown in and covered the exposed nerve and bone.

The first opinion (again, for emphasis):

The majority of oral surgeons and dentists recommend special care for three days. Most oral surgery textbooks recommend three days. I recommend three days. Two weeks is ridiculous. Loss of the clot has nothing to do with post-op infection as these are independent conditions. You can still get an infection, even if the clot is intact, and a dry socket is not an infection. It is possible to have both a dry socket and an infection. In general, post-op infections are rare following extractions but dry sockets are fairly common.