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The normal color of enamel varies from light yellow to grayish (bluish) white. It has been suggested that the color is determined by differences in the translucency of enamel, yellowish teeth having a thin, translucent enamel through which the yellow color of the dentin is visible and grayish teeth having a more opaque enamel.
He noted that calomel had harmful effects causing gangrene on the skin, loss of teeth, and deterioration of the gums. [8] On May 4, 1863, William A. Hammond , the United States' surgeon-general, stated that calomel would no longer be used in the army as it was being abused by soldiers and physicians alike. [ 8 ]
Enamel is the hardest substance in the human body and contains the highest percentage of minerals, [3] 96%, with water and organic material composing the rest. [4] The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate. [5] Enamel is formed on the tooth while the tooth is developing within the gum, before it erupts into ...
Mineralized tissues combine stiffness, low weight, strength and toughness due to the presence of minerals (the inorganic part) in soft protein networks and tissues (the organic part). [ 1 ] [ 2 ] There are approximately 60 different minerals generated through biological processes, but the most common ones are calcium carbonate found in mollusk ...
Cross-section of a tooth. B is dentin. Dentin (/ ˈ d ɛ n t ɪ n / DEN-tin) (American English) or dentine (/ ˈ d ɛ n ˌ t iː n / DEN-teen or / ˌ d ɛ n ˈ t iː n / DEN-TEEN) (British English) (Latin: substantia eburnea) is a calcified tissue of the body and, along with enamel, cementum, and pulp, is one of the four major components of teeth.
Researchers compared how three antioxidants affected gray hair outcomes in mice: hesperetin, diosmetin, and luteolin, and found that one helped mitigate hair graying. An antioxidant in vegetables ...
The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 1 as the hardness of talc, the softest mineral. When scraped on a streak plate , talc produces a white streak, though this indicator is of little importance, because most silicate minerals produce a white streak.
Using finasteride daily can reduce DHT levels by as much as 70 percent and encourage hair regrowth. Saw palmetto . Evidence suggests this natural ingredient may help reduce DHT levels, especially ...
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