Here's an interesting subject that you don't hear about every day. How white should your teeth really be? - CNN.com teeth whitening, according to a lot of dentists it has become an obsession to have the most perfect teeth possible to a lot of people. Personally I understand getting your teeth whitened every few years if they actually need it and just let it fly if they don't, nobody's teeth actually need to be whitened but everyone needs to get their teeth cleaned. Looks like I should tell a few of my friends just how dumb it is to get their teeth whitened every year.