My tongue is a little red on the left side more in the middle than the back. it seems like my teeth rest on my tongue, which is where it is red at.

Difficult: It is difficult to respond to your question without seeing your tongue. It may be normal or a sign of something that needs to be treated. I would suggest having a dentist take a look and give you an evaluation with treatment options if necessary.

For how long? Rule of thumb is that all oral lesions should be completely healed in 2 weeks. If not, see your Dentist. If adjacent teeth are sharp, fractured, or have a broken filling, see your Dentist now. If you smoke (anything) or abuse alcohol, see your Dentist now.