hi andrea and welcome to the board,
I have very sensitive teeth and think it is related to fm. about 10 years ago i kept getting terrible toothaches but when i went to dentist he couln't find anything wrong. After a few months of recurrent visits he took out 3 teeth from the same side on my lower jaw.
The pain didn't so away, i was then sent to a dental surgeon and he was furious with the dentist for taking them out as they weren't bad. It turned out i had nueralgia,(i didn;t know i had fm at the time) i still get trouble with my teeth but at least now they don't extract them. They just pain me from time to time. I remember reading once that a clued in dentist can be one of the first professionals to pick up fibro.
On the bright side, i still get discounted dental services because of it.
Take care and i hope you can get some support here.