My dentist hygienist said I should brush in circles instead of up and down. I guess she could tell by my gums that my brushing isn't up to par. It's weird though, because I thought I was brushing in circles.

I need to learn good dental tooth brushing techniques, because Charlie copies how I brush my teeth and I don't want him to pick up my crappy (apparently) dental technique!

Are you good at brushing your teeth? I.e., is your technique "proper"?