| MadSci Network: Medicine |
hay david,
i dont know where to start but wat i know is that you can't measure
whiteness from anything. Or the only method you can measure whiteness is
shade card, which you can get from a dentist or from any dental lab. but
that really will not help in measuring the effectiveness of the toothpaste
in removing stains.
thanking you
sHiBBi
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