to a dream interpreter, this is a VERY frightening dream (lionel ritchie aside..) teeth falling out symbolize MASSIVE change coming, usually not for the better, and the fact that it was dark and i couldn't see, means that light needs to be shed on the subject, so i can see it for what it really is. i used to have these sorts of dreams all the time, back when i lived in 6 states within 13 months, and almost every single one of the moves went horridly.
you can see why this terrifies me...
"there's no place to hide, and i'm nothing but scared..."