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  2. Calculus (dental) - Wikipedia

    en.wikipedia.org/wiki/Calculus_(dental)

    In dentistry, calculus or tartar is a form of hardened dental plaque. It is caused by precipitation of minerals from saliva and gingival crevicular fluid (GCF) in plaque on the teeth . This process of precipitation kills the bacterial cells within dental plaque, but the rough and hardened surface that is formed provides an ideal surface for ...

  3. Potassium bitartrate - Wikipedia

    en.wikipedia.org/wiki/Potassium_bitartrate

    Potassium bitartrate, also known as potassium hydrogen tartrate, with formula K C 4 H 5 O 6, is a chemical compound with a number of uses. It is the potassium acid salt of tartaric acid (a carboxylic acid). Especially in cooking, it is also known as cream of tartar.

  4. Tartar - Wikipedia

    en.wikipedia.org/wiki/Tartar

    Tartar (horse), a racehorse; Commander Tartar, the antagonist of the Splatoon 2 Octo Expansion; Dental tartar or calculus, hardened dental plaque; Tartar Sauce, a swear word for SpongeBob SquarePants; Wayne State Tartars, now called the Warriors; Tartarus, in Greek mythology, a place in the underworld

  5. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    The perception of tooth colour is multi-factorial. Reflection and absorption of light by the tooth can be influenced by a number of factors including specular transmission of light through the tooth; specular reflection at the surface; diffuse light reflection at the surface; absorption and scattering of light within the dental tissues; enamel mineral content; enamel thickness; dentine colour ...

  6. Tartrate - Wikipedia

    en.wikipedia.org/wiki/Tartrate

    A tartrate is a salt or ester of the organic compound tartaric acid, a dicarboxylic acid.The formula of the tartrate dianion is O − OC-CH(OH)-CH(OH)-COO − or C 4 H 4 O 6 2−. [1]The main forms of tartrates used commercially are pure crystalline tartaric acid used as an acidulant in non-alcoholic drinks and foods, cream of tartar used in baking, and Rochelle salt, commonly used in ...

  7. ∂ - Wikipedia

    en.wikipedia.org/wiki/%E2%88%82

    The symbol was introduced originally in 1770 by Nicolas de Condorcet, who used it for a partial differential, and adopted for the partial derivative by Adrien-Marie Legendre in 1786. [3] It represents a specialized cursive type of the letter d , just as the integral sign originates as a specialized type of a long s (first used in print by ...

  8. Potassium sodium tartrate - Wikipedia

    en.wikipedia.org/wiki/Potassium_sodium_tartrate

    The starting material is tartar with a minimum 68% tartaric acid content. This is first dissolved in water or in the mother liquor of a previous batch. It is then basified with hot saturated sodium hydroxide solution to pH 8, decolorized with activated charcoal, and chemically purified before being filtered.

  9. Potassium tartrate - Wikipedia

    en.wikipedia.org/wiki/Potassium_tartrate

    Potassium tartrate, dipotassium tartrate or argol has formula K 2 C 4 H 4 O 6. It is the potassium salt of tartaric acid. It is often confused with potassium bitartrate, also known as cream of tartar. As a food additive, it shares the E number E336 with potassium bitartrate. [1]