Yes..........I had TN and ON although I didn't know it at the time. I thought I had some serious tooth infections and I begged my Dentist to pull some of my teeth because the pain was so bad. After pulling a couple of teeth at different times my Dentist told me he would not be pulling anymore no matter how much I begged because the teeth that he did pull did not look bad at all. It was then that he mentioned that I may have TN. This pain eventually went away. (Thank God). This type of nerve pain is horrid. It also affected one of my ears.
It is my opinion now that it was internal shingles and that TN is a result of that. Of course you can't see a rash with internal shingles but shingles causes some of the worst nerve pain ever.
I'm currently watching a YouTube video (link below) on oral focal infections, and natural ways to treat them. At about the 19:00 min. mark (where the video starts), he says he believes 95% of trigeminal neuralgia stems from a tooth extraction gone bad.
I thought that was so astounding, I immediately did a search on PR with trigeminal in the title and found this thread. There are obviously other reasons a person can get TN such as an accident, or a viral infection. But it seems to me that oral infections are quite likely often the causative factor.
Dr. Nunnally also mentions other health issues caused by oral infections, including chronic fatigue. If somebody has both chronic fatigue and TN, then it seems worth considering they could both have the same cause, and that it could be coming from an oral infection.
When TN is caused by a cavitation site, it appears (as I recall) to almost always be from an old wisdom tooth extraction site. So the TN pain doesn't necessarily need to be adjacent to the teeth closest to it.
American Academy of Ozone Therapy - Dr. Stuart Nunnally