OP, I know it's a lot of money; but, I guarantee you, it is absolutely worth every penny! 19 years ago, I got one for TMJ-I was taking FOUR soma (muscle relaxers) per day just to function, my jaws hurt so bad, and I'm a teeth grinder too, which made it worse. My ENT (who diagnosed my TMJ) sent me to an orthodontist, who made what they call a TMJ splint (looks like a regular, orthodontic retainer), and he instructed me to wear it as frequently as possible for the first few weeks, then only at night. Within a month, I was completely off the muscle relaxers, and haven't needed one since! I don't know what I'd do without my splint! It's held up amazingly well-never had a minute's trouble out of it! Without a doubt, it was the best $250 I've ever spent! Good luck!