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Home : 2004 : Feb : 4
i do a demo every year using a hard boiled egg and vinegar. we compare the egg to a healthy tooth--it's white and has a hard, protective coating (enamel) on the outside. but if we don't take care of our teeth with daily brushing, flossing and a healthy diet, our teeth become yellow and weak! put the hard egg in the vinegar over night... the next day, take it out and let the kids look and touch it. the shell gets eaten away by the vinegar (which acts like the acid that forms in our mouths.) they think this is neat, and it really provides a good visual!
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