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I would like to know if ground-coffee stains the enamel of our teeth. If so, how long and how frequent would its exposure to coffee be in order to acquire a taint or colouring? It is possible too that only additives to the coffee result in an affect to the enamel of our teeth.

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Yes...tea and wine too. Hydrogen peroxide and baking soda can remove coffee stains from enamel. Organic bits of the plants stain enamel over time.

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  • Welcome! Can you also address the second part of the question - how quickly does the staining happen - if you have the knowledge? You can always edit your own posts, there’s a little link under your post for that. As for all new users, let me point you to the tour and our help center, which give an introduction to how the site works.
    – Stephie ♦
    Sep 21, 2019 at 5:21
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Yes, a few cups a day of black coffee will stain your teeth noticeably over a month or two (personal experience). It's easy to fix with a whitening toothpaste. You don't need one containing bleach; the one I use contains titanium dioxide. It got rid of the staining in a few days.

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    Are you sure that actually whitens the teeth? According to this article it's merely used to make the paste look whiter, it doesn't make the teeth whiter.
    – JJJ ♦
    Oct 2, 2019 at 10:18

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