Alright, I know I'm coming into this very late, but I'm having the EXACT same problem as the original poster, and I've been living on Prednisone ever since, as there's no sign of infection, pain isn't affected by antibiotics, and my whole cheek/jaw swells up and hurts when I'm off Prednisone!
I've had 3rd opinions, and no one's found a failed root canal or fracture, but those sound like my only options?
My dentist has offered to extract the tooth, but without travelling out of state, there's only one guy who does implants in my area, and he would charge me $7000. Even at $3000-4000, there's just no way I could possibly afford it - I work two jobs just to afford my home and bills, and support my family. Times are tough right now, and my husband got laid off, and has yet to find profitable new work. I have no credit cards at the moment. The root canal and multiple eno visits have eaten up almost all of my meger savings.
So, without losing my place to live or a car, I could never fund an implant.
What options do I have? What kinds of issues will I face removing molar #18 and not having an implant?
BTW, this has nothing to do with poor dental health - I was born with multiple tooth deformities that have plauged me through my whole life. In this case, the tooth was shortened and the root was snarled up, almost at a 90 degree angle at one point. While applying a filling preventatively to an area that was impossible to brush well the dentist drilled into the soft tissue nerve - which she claims was closer to the surface than it should have been?