If you have a toddler at home, then you know that toddlers tend to be experts when it comes to ear-splitting noises. Whining, shrieking, repeating the same word a zillion times at top volume...you may sometimes find yourself wondering how such an adorable little person can make such a headache-inducing racket! :) Here's another drive-you-up-the-wall noise you may have started hearing lately. It's the sound of your toddler grinding her teeth in her sleep. The sound of grinding teeth is an