This may sound "off the wall" but the problem may be due to the way the head sits on your spine...If the head is tilted toward one shoulder or the other or slighty twisted it can cause all kinds of jaw and mouth problems. TMJ, misaligned teeth, etc.
It may be one more thing to try at any rate. Call the "800" number on the web site, www.pettibonsystem.com
, and find a practicioner in your area.
The other thing that comes to mind is called EFT, Emotional Freedom Technique. Dr. Mercola, www.mercola.com
, is big on this and it apparently works for many issues. www.emofree.com
will list practicioners in your area. It can also be done over the phone if there isn't one locally.
Keep us posted and let us know what works for you.