This site not only talks about tooth care, but also give you some history about dental care. At the bottom of the article, there are links to more information and videos.
Teeth. We’ve all got ‘em (most of us, anyway). But how do they grow? Teeth are made from some biological nanotechnology that will blow your mind. They are strong enough to last hundreds of millions of years.
This video (for secondary students) describes what would happen if you stopped brushing your teeth. Learn about plaque, bacteria, tartar, gingivitis and other unhealthy mouth conditions.