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*This article has been adapted from an article posted by the ADA. You can view the full article here* Look in just about every bathroom in America and you will find a toothbrush. They come in all shapes and styles, with batteries or without, and with a variety of different bristles - but how much do you really know about your toothbrush? 1. The toothbrush is 5,000 years old. In various forms, that is. Ancient civilizations used a “chew stick,” a thin twig with a frayed end, t