The damage to your teeth could be helped by the various teeth fields (such as New: Dental Care - Teeth Restoration, Kill off cavity bacteria and strengthen teeth or Plasma soaked Teeth and Gums, etc.)
But I think that’s getting the cart before the horse, because until you’ve fix what’s causing you to grind your teeth in the first place, you’ll just continue grinding away whatever help your tooth repair fields are doing for you.
Typically what causes us to grind our teeth in our sleep is stress and unresolved issues/traumas. And if you can’t figure out what those might be for you, we have My personal emotional and mental supporter to help you with that.