Tooth Decay Process
Tooth decay is an infectious disease, the key feature of which is an increase within dental plaque of bacteria such as Streptococcus mutans and Lactobacillus. These produce organic acids when carbohydrates, especially sugar, are eaten. When enough acid is produced so that the pH goes below 5.5, the acid dissolves carbonated hydroxyapatite, the main component of tooth enamel, in a process known as demineralisation. After the sugar is gone, the mineral loss can be recovered—or remineralised—from ions dissolved in the saliva. Cavities result when the rate of demineralisation exceeds the rate of remineralisation and the latticework is destroyed, typically in a process that requires many months or years.
Read more about this topic: Remineralisation Of Teeth
Famous quotes containing the words tooth, decay and/or process:
“With a new familiarity and a flesh-creeping “homeliness” entirely of this unreal, materialistic world, where all “sentiment” is coarsely manufactured and advertised in colossal sickly captions, disguised for the sweet tooth of a monstrous baby called “the Public,” the family as it is, broken up on all hands by the agency of feminist and economic propaganda, reconstitutes itself in the image of the state.”
—Percy Wyndham Lewis (1882–1957)
“It had been a moving, tranquil apotheosis, immersed in the transfiguring sunset glow of decline and decay and extinction. An old family, already grown too weary and too noble for life and action, had reached the end of its history, and its last utterances were sounds of music: a few violin notes, full of the sad insight which is ripeness for death.”
—Thomas Mann (1875–1955)
“Science and art are only too often a superior kind of dope, possessing this advantage over booze and morphia: that they can be indulged in with a good conscience and with the conviction that, in the process of indulging, one is leading the “higher life.””
—Aldous Huxley (1894–1963)