I've been grinding my teeth for decades. I've tried two different mouth guards and neither has worked. I just bite down on them really hard, which makes my front teeth hurt.

I also used to slide my lower jaw to the left while I was grinding. As a result, most of the damage has been to teeth on the upper left. I would also get a popping in my left jaw.

I stopped wearing a night guard a few months ago, after someone at the dentist's office relined it but it wasn't done right and it caused too much pain to wear it. Since then I've found that I'm grinding my teeth less than I did while wearing the night guard. It mostly seems to happen when I'm sleeping on my back, but not when I'm on my side. I've also stopped sliding my jaw to the left, because doing it was causing a crown on the upper left to hurt alot, which would wake me up, so I think through operant conditioning I finally stopped the sliding.

I also have problems with shoulder and neck pain. I go through life with hunched shoulders. Recently I've been trying to pay more attention to that and remind myself frequently to relax them.

I know someone who recently got invisalign braces to stop him from grinding his teeth. His dentist said that alignment problems were the cause in his case.