Tooth of the Matter

I got an e-mail from one of my newspaper friends wondering when old toothbrushes should be switched out for new ones. Frankly, I know little about the mouth, but I once gave an oral report. And I must admit my teeth aren’t all mine, but they will be after three more payments. Several hundred years ago, a person cleaned his teeth with a quill. But if he used that same quill...

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