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

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

   Teeth whitening strips are easy-to-use, peel-and-stick strips that you wear on your teeth for 15 to 30 minutes each day. "Most kits come with a 30-day supply and are relatively easy to use," says ...

3. 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]

4. 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.

5. Gum depigmentation - Wikipedia

   en.wikipedia.org/wiki/Gum_depigmentation

   Gum depigmentation, also known as gum bleaching, is a procedure used in cosmetic dentistry to lighten or remove black spots or patches on the gums consisting of melanin. . Melanin in skin is very common in inhabitants in many parts of the world due to genetic fact

6. These Dentist-Approved Mouthwashes Will Zap Bad Breath and ...

   www.aol.com/dentist-approved-mouthwashes-zap-bad...

   However, whitening mouthwashes will freshen your breath while also helping to reduce stains on your teeth. They usually contain hydrogen peroxide or another teeth-bleaching agent to help lighten ...

7. 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 ...