oh i wanted to say that flossing is way more important than brushing. the main place that bacteria get really dense and acid build up is really bad is BETWEEN two teeth, since chewing AND brushing (what most people do) cleans the front and back face of the tooth, and so cavities (where no more enamel is) are usually between teeth. I personally floss WAY more than i brush, because i know that just the act of eating (chewing) cleans off a lot of the front and back of my teeth. its in between them that needs the attention.