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  2. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    The tooth whitening endpoint does depend on the frequency of use and ingredients of the product. [1] Whitening gels are applied onto the tooth surface with a small brush. [1] The gels contain peroxide and are recommended to be applied twice a day for 14 days. [1] The tooth whitening endpoint like that of the whitening strips. [1]

  3. Water fluoridation - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation

    Water fluoridation. Fluoridation does not affect the appearance, taste or smell of drinking water. [1] Water fluoridation is the addition of fluoride to a public water supply to reduce tooth decay. Fluoridated water contains fluoride at a level that is effective for preventing cavities; this can occur naturally or by adding fluoride. [2]

  4. Tooth brushing - Wikipedia

    en.wikipedia.org/wiki/Tooth_brushing

    A man brushing his teeth while looking in a mirror. Tooth brushing is the act of scrubbing teeth with a toothbrush equipped with toothpaste.Interdental cleaning (with floss or an interdental brush) can be useful with tooth brushing, and together these two activities are the primary means of cleaning teeth, one of the main aspects of oral hygiene. [1]

  5. Elephant's toothpaste - Wikipedia

    en.wikipedia.org/wiki/Elephant's_toothpaste

    Elephant's toothpaste. Elephant's toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide (H2O2) using potassium iodide (KI) or yeast and warm water as a catalyst. [1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide. [2][3][4]

  6. Wisdom tooth - Wikipedia

    en.wikipedia.org/wiki/Wisdom_tooth

    Wisdom teeth in the human mouth for permanent teeth. There are none in deciduous (children's) teeth. The third molar, commonly called wisdom tooth, is the most posterior of the three molars in each quadrant of the human dentition. The age at which wisdom teeth come through (erupt) is variable, [1] but this generally occurs between late teens ...

  7. Airlines cool hiring after adding employees in post-Covid spree

    www.aol.com/news/airlines-cool-hiring-adding...

    U.S. passenger airlines have added nearly 194,000 jobs since 2021 as companies went on a hiring spree after spending months in a pandemic slump, according to the U.S. Department of Transportation.