what should i do to stop teeth grinding during sleep?

I think I experienced that king of "grinding." The one when you would wake up and feel that you were biting so hard. I found out that when you sleep and let any cheek sleep in your biceps, it will make your mouth relaxed and open your teeth a little bit. The only problem though for doing that is the drooling. (eewwee)

in our country they say that if you grind your teeth during sleep. you should slap a slipper in the mouth of the person who grinds teeth and throw away the slippers. not sure if it works though. havent tried it.