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  2. Tooth discoloration - Wikipedia

    en.wikipedia.org/wiki/Tooth_discoloration

    Tobacco: Tar in smoke from tobacco products (and also smokeless tobacco products) tends to form a yellow-brown-black stain around the necks of the teeth above the gumline. [12] Betel chewing. [13] Certain foods and drinks. Foods, such as vegetables, that are rich with carotenoids or xanthonoids can stain teeth.

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  4. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    The nicotine and tar in tobacco, combined with oxygen, turns yellow and over time will absorb into the pores of enamel and stain the teeth yellow. The dark brown to black stains along the gum line of the teeth are the result of the porous nature of calculus immediately picking up the stains from nicotine and tar. Betel chewing. [12] Betel ...

  5. Human tooth - Wikipedia

    en.wikipedia.org/wiki/Human_tooth

    At that time, the first permanent tooth erupts. This stage, during which a person has a combination of primary and permanent teeth, is known as the mixed stage. The mixed stage lasts until the last primary tooth is lost and the remaining permanent teeth erupt into the mouth. There have been many theories about the cause of tooth eruption.

  6. Are Whitening Strips Bad for Your Teeth? Dentists Explain - AOL

    www.aol.com/lifestyle/whitening-strips-bad-teeth...

    Today, veneers easily run between $1,000 to $8,000 a tooth. So what are those whose dental budget is less than $100k (or let’s be honest, $100) to do? Whitening strips are a popular over-the ...

  7. Should You Stop Drinking Coffee Every Day? Experts Weigh In - AOL

    www.aol.com/stop-drinking-coffee-every-day...

    There are a handful of things most of us do every day upon waking up: brush our teeth, scroll on our phones, enjoy a cup of coffee.For many, that cup of coffee is a non-negotiable, whether you ...

  8. 5 Reasons Why Coffee Can Help You Live Longer ... - AOL

    www.aol.com/lifestyle/5-reasons-why-coffee-help...

    Additionally, coffee contains magnesium and potassium, two nutrients that support your metabolism, potentially making weight management easier. 2. May Support Your Heart Health

  9. Tooth enamel - Wikipedia

    en.wikipedia.org/wiki/Tooth_enamel

    The agents most commonly used to intrinsically change the color of teeth are hydrogen peroxide and carbamide peroxide. Oxygen radicals from the peroxide in the whitening agents contact the stains in the interprismatic spaces within the enamel layer. When this occurs, stains will be bleached and the teeth now appear lighter in color.