No one has ever called mine TMJ, but I wear a mouth guard about 20 hours a day. I grind my teeth so hard if I don't wear it, in past I've affected the trigeminal nerve in both sides of my face. That causes headaches so bad that I've ended up medicated and in bed trying to get rid of them.

If you didn't know I wear it, you'd never be able to tell that I have a mouth guard in my mouth. The dentist that made it did a great job.