I have been to 3 different dental offices with the exact problem, all have a different answer. I have severe tooth sensitivity in tooth 2,3,4 the tooth number 4 has a galvantic shock in it, just recently its starting to shock when eating food, scrammbled eggs one time and potato salad with boiled eggs. I have had my teeth cleaned since the exrays were taken. The first dentist thought he saw a cavity under 2 of the 4 teeth, he wanted 2900.-- for a root canal and 2 crowns, I am the one who suggested a tooth cleaning first thinking my plaque build up may be the culprit. The second dentist didnt have an answer either, he wanted 6 crowns and a root planing and scaling to the tune of 10k. They did a surface clean and I left. The third dentist, which I signed up for a dental group plan, this one said do a dental debribment, applied flouride gel, and prescribed flouride toothpaste. She said she would have to numb me to be able to check the tooth with the shock, all my teeth pockets were 3 except one back molar was a 5. I am only 47 and I cant not eat or drink on one side for ever. In march I had tooth 13 break at gum and had it surgically, because of the extraction I had to eat on the sensitive side, it was not as severe until I started flossing and brushing more regularly. Now its so bad I can only handle luke warm anything, also after being shocked from food I am very very afraid to have food touch that side, its a shock where you almost throw your plate of food against the wall. It seems like my allergies are pretty severe this summer, post nasal drip everyday sneezing, would it be advised to go to an allergist I am have bouts of pain under the right cheek pain where the sensitive teeth are. I have all my xrays, not sure if the ones I posted are correct side. Thank you for your reply, I am ready to pull the 3 teeth and call it quits, then I really wouldnt be eating.