One of my teeth, the 3-6 in dento-lingo, or Wunderzahn as my current dentist at the University Clinic dubbed it has been a pain in the mouth since February ... when it received the first root canal treatment.
After the first two weeks in agony - despite around 8 visits to my now-ex-dentist/clinic, which it took before I received a medication that took away the immediate acute pain - weeks and months followed during which the tooth was in turn allowed to calm and would then be opened again just to hurt again when the root canals were probed. Which shouldn't have been so, legions of denitsts have attested since then.
Today after about 4 month at the new clinic it was finally examined under microscope, but no 4th canal has been detected, the source of the recurring pain (which has set in dramatically again yesterday, after the tooth had been opened again) is still a mistery ... which might make extraction the unavoidable final answer to this b*tch of a grinding tool.
Only about two years back extraction was the fate of it's symmetrical counterpart in my right lower cheek - which crumbled after month of opening and closing the root canals again as it still hurt during and after the canal treatment when it should have been dead - just like this one.
... Since February ... !!