I've had problems with bruxism for decades. Dentist said it was stress, he gave me a mouthguard and I proceeded to break it. I would still grind my teeth even if I was super relaxed.

I now do something that has reduced my bruxism by a LOT:

Mouth taping.

My dad's old college roommate is a bruxism expert and wrote to me:

"Bruxism is the body's attempt to dilate pharyngeal muscles to open the airway and facilitate breathing. You probably snore and or have sleep apnea."

Mouth taping solves this because it forces my body to breath thru the nose vs the mouth and consequently I get more oxygen and much better sleep.

Add a magnesium supplement to this and I'm doing so much better.

EDIT: Forgot to mention I had bad allergies and have asthma so I learned bad breathing habits early on. AKA mouth breathing.

A simple test: Where is your tongue resting right now? If it's at the bottom of your mouth, you're probably a mouth breather. And that's not good!

I've been doing mouth taping for maybe six months to a year.

I think it's helping.

Hmm. My tongue is always t the roof of my mouth when awake. But my nose gets stuffed when I sleep. Does yours with allergies?

I ordered some breathe right things for the nose for sleep to try to improve this, hoping it helps with bruxism. If they work and I still have it, will try tape. Want to make sure I don’t suffocate first due to blocked nose haha.

Try mouth taping. I suggest 3m Micropore tape.

My nose gets clogged sometimes but when you force yourself to breathe through your nose, your body tries to accommodate and opens it up. It will feel weird in the first week but you'll get used to it.

I'd skip breathe right and go straight to tape! I tried breathe right but I was still mouth breathing.

I started with https://somnifix.com/products/mouth-strips-snoring-sleep-aid – they have a tiny cut in the tape that allows some airflow; but it got too costly and wasteful so I moved to 3M's Micropore.