"Make sure that you brush all of your teeth." That's what a dentist or your parents may tell you. But what if you can't reach all of them? All 558 of them? That was the issue for a seven-year-old boy ...
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We have two sets of teeth during our lifetime. These are primary (baby) teeth and adult teeth. People typically have 20 primary teeth and 32 adult teeth. It’s also possible to have an extra, or ...
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