Well isn't that basically an 'essence' of TMS? Dr Sarno discovered that structural abnormalities have nothing to do with pain. Many studies confirmed it. Most people after some age have structural abnormalities in their back - I would suspect the same is with jaw. It's normal thing, it's called 'life'. Now, there are people with structural abnormalities having pain yes... but some of the worst pains are experienced by people who have no abnormalities at all!
If you have abnormalities it's possible that it makes weird sounds, or it's clenching(which will not help with pain) and those are physical stuff. Sound is not generated by brain... but pain is. So I would say that this is very probable that you have TMS problem.
Exactly what I though with the normal abnormalities stuff.
My jaw doesnt really make sounds, if it does happen, its from VERY STIFF muscles, you know when you crack your back or get a massage you can feel the muscle adhesion releasing.
Most people who clench their jaw at night will wake up with more jaw/face pain, but I don't get this, so I don't think I am even clenching at night. Sometimes I think I may be clenching a bit during the day, which most people do anyways I think.