Why is it that in an age of lasers that can miraculously fix vision, someone still hasn't invented a painless way to have your teeth cleaned? Why is it that people are still using sharp pointy objects to remove tartar? Why hasn't someone invented a painless rinse that removes all of the crap without eroding your enamel? I have met the devil. She wears scrubs with a bunny pattern and her instrument of torture is a toy called the Cavitron. Her name is Mary and she's a dental hygienist.