Originally Posted by daisymactx
An easy way to see if you have TMJ is to put your fingers in your ears and open and shut your mouth. If you feel, or hear, any crunching or unevenness you could have TMJ. The normal jaw moves smoothly.
There are products you can get at the drug store that are sleep guards for your mouth. They mold to your teeth and make your bite even, so that you don't need to grind. It's an easy way to see if that is the problem. Of course, if you have really good insurance and can afford it, go to a dentist to find out.