You're not the first person to grind your teeth, and you won't be the last! It's not exactly controllable when you're asleep either.

Have you ever had braces/orthodontics at all? TMJ can cause your jaw to be aligned differently, so your teeth grind together.

Even if it isn't TMJ ... you're still grinding your teeth and that's bad for them! Go to your dentist and see about getting more than one mouthguard that you can wear so you can't grind your teeth.

I have three of them - two for daytime, and one for night. The two daytime ones are different thicknesses - one is barely noticeable, and it's quite easy to both talk and drink with it on (not recommending you eat with it on since it might degrade that way). The other daytime one is just slightly more noticeable, but doesn't impact my speech - but it's more thick for when you don't neccessarily NEED to talk, but you are grinding your teeth. I actually use those two interchangeably mostly.

The nightguard is another story altogether. It's thick and a bit big. It's bloody impossible to talk normally when it's in your mouth since it covers your pallette. You either sound like you're drunk, or you have a lisp. It requires you to run it under hot water to make it malleable to insert, and you have to gargle warm water in the morning to take it out - otherwise it WON'T come out unless it's taking your teeth along with it!

It does wonders for my teeth pain and jaw pain to have it. It also prevents wearing down of enamel and lessens the possibility of finding another way to hurt your teeth! I highly recommend it.