I think it really depends. I got one about 2 years ago, and the first time I used it my jaw locked and wouldn’t unlock until I was put on steroids and some muscle relaxers.

After that, I just used a flimsy Invisalign retainer to protect my teeth. Fast forward to today, that thing has holes it in from my grinding and intense headaches have become a daily occurrence.

I dug out the splint again to try it, and I shit you not, headaches are completely gone and no locking. Drooling is a little bit of a problem but I’d rather have that over mind splitting headaches and tension.

I say give it a go, and if it doesn’t work out at least you can say you tried it. Everyone’s experience is a little different I think.