My teeth have been hurting for over a year now. nothing has worked to stop it. what can i do? my enamel seems weakened, but dentist says no cavities.

Tooth grinding: If you could point to a tooth that hurts it is the problem. However, if the pain causes all of the teeth to hurt then you are most likely bruxing or clenching your teeth. The best treatment is an occlusal (bite) guard. Talk to your dentist about one.

May not be teeth: It is very rare and I have never seen a case of all teeth causing pain. First we need to go through a detective process and narrow down the symptons. Quality, duration, time of day, things that trigger it. For instance my teeth hurt when i eat ice cream versus i get pain on both sides of my lower jaw. One might be sensitive tooth or teeth and the other could be referred heart pain.

They Hurt when?: If the pain is along the gum line of each tooth, you may have periodontal disease (gum & bone recession) leading to exposed root surfaces which have nerve ending. Then hot or cold foods or touching of these areas can be sensitive. See your dentist for a thorough evaluation and treatment plan.

Many possibilities: I agree with all the comments and possible causes mentioned by my colleagues. There are many reasons why your teeth can hurt, even without cavities. By the way, some people just have very sensitive teeth ( as some individuals have very sensitive skin that sunburns easily). Your dentist should at least be able to give some basic explanation as to the cause of your sensitivity. Second opinion?