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  2. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel . [ 2 ]

  3. Teeth whitening: What is it, how to do it safely and how to ...

    www.aol.com/lifestyle/teeth-whitening-100042380.html

    Whitening toothpaste According to a 2018 study , chemical teeth-whitening toothpaste outperforms natural alternatives. Despite this, it isn't as highly recommended as whitening strips or trays.

  4. Toothpaste - Wikipedia

    en.wikipedia.org/wiki/Toothpaste

    Whitening toothpaste cannot alter the natural color of teeth or reverse discoloration by penetrating surface stains or decay. To remove surface stains, whitening toothpaste may include abrasives to gently polish the teeth or additives such as sodium tripolyphosphate to break down or dissolve stains. When used twice a day, whitening toothpaste ...

  5. Dentifrice - Wikipedia

    en.wikipedia.org/wiki/Dentifrice

    Tooth powder was historically used among the Romans to clean and whiten teeth, to fix them when loose, to strengthen the gums, and to assuage toothache. [ 2 ] [ 3 ] [ 4 ] They made tooth powder from a variety of substances, such as the bones, hoofs, and horns of certain animals; [ 2 ] crabs; oyster [ 5 ] and murex shells; and egg-shells.

  6. Dentist-Approved At-Home Teeth Whiteners - AOL

    www.aol.com/dentist-approved-home-teeth...

    Optic White Stain Fighter Stain Removal Toothpaste. As Layliev explains, teeth darken when harmless stained pigment accumulates over time from exposure to acidic foods that erode the enamel, like ...

  7. Amanda Seyfried's Dermatologist Told Her This $11 Toothpaste ...

    www.aol.com/entertainment/amanda-seyfrieds...

    Made in Italy, Marvis Whitening Toothpaste is fluoride-free, gluten-free and paraben-free. The celeb-approved toothpaste whitens teeth, while removing plaque and tartar in the process.

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