QUOTE(Amber @ Feb 11 2006, 05:08 PM)
I wonder if osteopathy or chiropractic could help?
On a similar note, when this happens to me, I can relax it out, sort of. If you lie down flat, close your mouth (well, I'll take that for granted in your case!) and put the underside of your tongue on the roof of your mouth, kina like you're trying to taste the back of your own tongue; anyway, it should create a vacuum. Breathe in really slowly, and as you breathe in, relax your jaw. When your jaw isn't locked, it should drop down slightly, but since it is, just imagine it. When you breathe out, relax your jaw up, if that makes sense. While doing this, try imagining a balloon inflating on the inbreath and deflating on the outbreath inside your skull where the brain should be. Also, curl your feet upwards on the inbreath and relax them back to normal on the outbreath.
This sounds like a load of rubbish, but doing this for a year (under supervision and instruction, I hasten to add!) completely got rid of my need for braces by fixing my underbite; but instead of reducing the underbite, it expanded the front of my face, so my top jaw and nose area have grown hugely. At any rate, the whole process is really relaxing, I can reduce my heartbeat to about 45 bpm. It relaxes muscles and tension all over the body, so it just might work. If the instructions make sense, that is!!