I am on a similar quest, though I generally have really good teeth. My one "bad" tooth was caused by elective dental work. It got infected and now the dentist says "root canal." I am convinced it can be cured. I bought the e-book at http://www.curetoothdecay.com/
which advocates the Weston A. Price diet. The man who wrote the book states that his daughter's teeth actually re-mineralized after following the diet. The cavities cured themselves and refilled with enamel. Gums grew back and teeth became firmly implanted again. At this site, http://www.cancertutor.com/Cancer02/BobBeck.html,
they talk about using a magnetic pulsar to kill pathogens in places where the blood-stream can't reach. So I bought one to try to get the infection out of my tooth. I haven't received it yet but will let you know how it works. I can tell that my tooth is not healed yet, even though Antibiotics knocked out the worst of the infection. I have minor nerve irritation in the tooth every afternoon. Weird. I am also taking Colloidal Silver and have ordered some Miracle-Mineral-Supplement . I am improving my diet and taking the vile fermented cod liver oil recommended by Weston A Price. Next week I am getting my last mercury Amalgam filling removed. Will do the cilantro pesto after that. I am just going after it from all angles. I also got the ebooks at this site http://mizar5.com/mbmf.htm.
The author has also seen cavities remineralize and gums regrow with proper care. I will let you know how it goes. Good luck to you!