Hmmm, I've had teeth problem now on 3 teeth, have seen my dentist and endo a bunch of times and one of the teeth he just can't fix even after root canals and working on it and taking CT scans, he told me only thing to do now for that one is to have it pulled. Other root canal also still kind of hurts. However, this all started 5 weeks ago so I don't think it can make sense here.