Q. I am having sudden twinges in a tooth that was treated (filling in a cavity) two months ago. The onset of the sensitivity was sudden. It feels as if it is in the same region that the filling is located. I have had no problems at all since the treatment. Can this be just a passing thing? Could there be other reasons for this beside inflamed pulp? If something was wrong with the original filling, would that be indicated much closer to the time of the treatment?,