problem with cracked tooth
I have a tooth which I was told was cracked years back. I never actually had any type of injury causing the tooth to crack. And I never had any pain in the tooth in question. It was my dentist of the time who told me the tooth had a fracture, and that a crown should be put on to save the tooth. So I had the crown done, but afterwards I had terrible pain while chewing. This went on for many months, with the dentist trying bite adjustments, and the pain only getting worse. At last I had a root canal done and a new crown put on. This brought some relief, but I have still had periods over the past years where the tooth seems to "act up" and gives me pain. And I always notice pain when eating certain foods, like a fried corn tortilla, if I bite down on that tooth. I've found using something like Sensodyne usually makes things more manageable if the tooth acts up. At a time when it was causing me pain a couple of years ago, I went to my endodontist who did bite tests, heat and cold tests and x-rays on the tooth, none of which showed a problem. I did not feel any pain during the test. Yet for whatever reason I've continued to have problems on and off when chewing.
Anyway, lately things seem to have taken a turn for the worse. For a few months now I have consistently had pain which seems sharper and more consistent than ever before, and sensodyne doesn't help. I seem to experience pain only when chewing while eating something which is hot, and whether I get pain or not depends a lot on the texture of the food I'm chewing. The pain lasts only for so long as I bite down, making contact with the tooth. I do not notice pain when not chewing, or when eating cold things. In fact if I let my food cool a bit before eating it and then chew, I won't have pain in that tooth. Does anyone know what might be going on here and what I can do? Does this mean I'm going to have to have the tooth extracted and there's no way around it?