Welcome to Neuro talk. Bryanna is the most experienced about dental issues on this site. I know she will respond. I am glad you are reading the posts about dental issues. I had the same kind of problem you do. What I found out is that RC in general is a money making endeavor, which will never have a good reslolution. Not now, not ever. The tiny parts inside the infected tooth, cannot be cleaned out 100% no matter what the specialist does. They don't always tell you that because money is an issue. Think of what it cost origionally, with RC, then crown, now the RC supposedly re-done. This is a bandaid on a tooth that really is causing pain and continued infection. Our immune systems don't need that. I had my RC teeth out, and have a partial. No pain, no infection, no problem, end of jaw pain, all of it. Bryanna may be able to tell you this in a more technical way. If this tooth is treated again as your speciaist recommends, it won't solve the problem. NT is here to try to get to the truth of our issues. I don't always like what I heard for my own conditions, but I did find out about the truth of the situation. I sure wish you all the best tinask. You will get some more responses, and I will be here for you. ginnie