This self-powered toothbrush makes electricity to kill cavity-causing bacteria
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A toothbrush that generates its own electricity with every stroke could offer a new way to fight the microbes behind cavities and gum disease.Conventional toothbrushes rely on physical scrubbing to remove plaque from teeth and gums. But even after a thorough brush, some bacteria remain and begin rebuilding plaque. To solve that problem, researchers have developed a self-powered toothbrush that converts the friction of brushing into an electrical charge. That electricity is intended to zap the pl
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