Hi chaps, I bit on a hard nut or something at Christmas, a big molar that had a crown fitted 20 or more years ago (I'm 70) there was a sharp pain and over the last few weeks the sensitivity has eased. I mentioned it to my dentist, he checked it out and x-rayed and says he can find nothing. I've been avoiding chewing (on the right side) but forgot yesterday and had a brief jolt of pain biting on something. What to do now, get a second opinion or avoid chewing on the right or start using 'sensitive' toothpaste ... any advice welcome (PS NB I have a limited budget).