June 20, 2013
A LOOK AT TOOTHBRUSHES
Toothbrush design and materials have come a long way. Early forms of the toothbrush have existed for nearly 5000 years. Some ancient civilizations removed food with a "chew stick," which was a thin twig with a frayed end that was rubbed against the teeth. During the last century or so, toothbrushes were crafted with bone, wood or ivory handles that ...