I grind my teeth badly when I sleep ㅠㅠ

I grind my teeth badly when I sleep.

I grind my teeth when I sleep, so I...

The family living together cannot feel that I am leaving.

I understood that going there is severe.

It's not just 1-2 years old; it's been a very long time.

So about five years ago, I went to the dentist and paid 500,000 won to have a custom-made mouthguard to prevent teeth grinding. I also wore it myself, but since my teeth grinding was severe, it sometimes fell out while I was sleeping, hahaㅠ

Is there a way to fix teeth grinding?