Ancient Tooth Plaque Reveals Diet

Long before the development of agriculture, our prehistoric ancestors had a good knowledge of plants – not just for food, but for medicine. Researchers found evidence of this by studying some ancient teeth found in Central Sudan. Dental hygiene has become an important part of modern-day health care. And many millions of dollars are spent every year to get or keep teeth and gums healthy. One of the things dentists warn their patients about is dental calculus or tarter – a very hard...

© La Voix de l'Amérique - jeudi 17 juillet 2014