Newsletter Sign Up Subscribe Most of us take our teeth for granted... until something goes wrong. Our teeth are very essential tools of the body. They help us chew, digest food, are important role in our speech. and impact our health overall. Humans have two sets of teeth, primary and...

Newsletter Sign Up Subscribe HowStuffWorks.com is a website that explains thousands of topics from teeth whitening to rocket science! In this article here, How Stuff Works dives into how teeth whitening works and its history. An estimated ten million Americans will spend a whopping 1.7 billion dollars on teeth whitening products...