Q.
Hello,
I hope you can help me please, I had RCT on a upper back tooth which was not successful I changed my dentist and had the RCT done again, it was very painful afterwards and took several months to settle down. My problem now is that there is a small old filling on the inside of this tooth which is making my tongue sore I spoke to the dentist about having the old filling redone and was told because it was attached to a larger filling it was best to leave it and he filed down the old filling to try to smooth it but this is not successful. I did look at the tooth with a small mirror to see for myself and the filling looks old but I also noticed a dark horizontal line just under the gum line on this tooth and when I touched it the tooth was tender, I am worried that some damage has been done to the tooth whilst having the two RCT.
I can’t afford to loose this tooth so please could you advise me what I should do, I would appreciate your knowledge regarding my problem.

Thank you so much