I had a filling in my right bottom tooth (5th from front) it was a bit stained so I had my dentist drill it a bit and put white in. This was 3 yrs ago. As soon as I did that it became sensitive. Went to a different dentist overseas (we moved) and she said I needed a new filling. So she did that. Then it became sensitive again, she said my gum had receded and she put a sealant on it. It helped 100percent. Sealant came out 2 weeks ago and it once again felt like my nerve was exposed at the gum line. Different dentist filled it again. It is killing me. I went back 2 was after that filling and she said the only thing they can do is root canal or I can live with it. I can't eat or drink on that side or even brush it. If I touch it with my finger it sends me through the roof. I am in tears. What do I do? I use sensitive toothpaste :(. I am really down.