Is there a cure for Grinding teeth?!!?

my little sister grinds her teeth when she's asleep!! Its really loud and unbearable... it wouldnt be so bad except we're going on holiday soon and i'll have to share a room with her! I was wondering if anyone else had the same problem and what cure they can suggest?? p.s. kicking her til she... show more my little sister grinds her teeth when she's asleep!! Its really loud and unbearable... it wouldnt be so bad except we're going on holiday soon and i'll have to share a room with her!

I was wondering if anyone else had the same problem and what cure they can suggest??

p.s. kicking her til she wakes up and then trying desperately to sleep is NOT an option..... i already tried it and it doesnt work!!
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