You could possibly have invisibly cracked (even to the dentist) teeth caused by grinding, or just hypersensitivity which could subside if you stop grinding. I've had incredibly sensitive teeth too which has seemed so odd because the dentist couldn't find any reason for it, this year 3 fillings I had done (in molars) hurt afterwards with biting for no apparant reason, one was a very small cavity which shouldn't have hurt at all (before or after being done, but it did), pain mostly died down after a few months but still comes back in different places, just going around my mouth. I've had to conclude it is due to bruxism, I just got a 'bite splint' to wear at night and already I feel as if my teeth are less sensitive. I happened across a really excellent dental site last week which explains many relevant to tmj suffers details very well, for example it mentions that teeth can be finely cracked without it being visible.
Last edited by Administrator; 08-09-2014 at 02:48 PM.