I had an old mercury filling replaced by a bonding material back in june 2003 because my dentist said I had microcracks in it. He said it wasn't a deep filling, but after he worked on the tooth I had more sensitivity than I had previously. He made several bite adjustments, but to no avail. The tooth eventually became sensitive to hot and cold and then I had a root canal performed in mid-july. It felt much better until mid-august when I began to feel more sensitivity in tooth when biting down. When I went back for the 2nd visit with the endodontist, I felt much discomfort when he was cleaning out one of the canals. After he finished, he took an x-ray and said it looked good. I was still experiencing sensitivity after that visit. I eventually had a second root canal done by him on the same tooth in mid-october. I was in more pain after this one, than the first one. That same canal I had a problem with the first time, hurt even more this time. I don't understand why I would be in more pain this time versus last. He said he didn't find any more canals when he went in the second time and the cause of the pain was other nerves and ligaments around the tooth. Besides still having sensitivity, every morning when I wake up, that tooth aches. It eventualy subsides during the day. Some days are better than others. Do you have any idea what could be causing this pain? Why would I be experiencing so much discomfort when he went into this one canal? I would appreciate any advice that you could give. I have been dealing with this tooth for over 5 months and don't know where to go at this point.
Thank you.