| 单词 | dental plaque |
| 释义 | > as lemmasdental plaque c. Originally: a patch of sticky or hard material containing bacteria, deposited on the surface of a tooth (now rare). Now chiefly as a mass noun: the substance of which such patches are composed. Also dental plaque. ΘΚΠ the world > health and disease > ill health > a disease > disorders of internal organs > disorders of mouth > [noun] > disorders of teeth scale1594 caries1634 tartar1806 odontolith1848 malocclusion1864 pulpitis1869 odontome1870 pericementitis1882 cementoma1893 open bite1893 plaque1898 super-eruption1912 mulberry molar1917 Moon1918 retroclusion1928 bruxism1932 overclosure1934 overeruption1961 1898 G. V. Black in Dental Cosmos 40 448 Leptothrix threads..are found..clinging in and upon gelatinous microbic plaques upon the teeth. 1921 T. J. Ryan & E. F. Bowers Teeth & Health xi. 154 In caries, or dental decay, placques or films of saliva form on the tooth surfaces, in combination with particles of carbohydrates. 1959 E. M. Wilkins & P. A. McCullough Clin. Pract. Dental Hygienist ii. 109 Dental plaque is a thin, tenacious, film-like deposit made up principally of microorganisms and mucinous substances from the saliva. 1959 E. M. Wilkins & P. A. McCullough Clin. Pract. Dental Hygienist ii. 109 Dental plaques vary in thickness, degree of adherence to the tooth surface, and percentage composition. 1971 Daily Tel. 24 Aug. 5 (advt.) Plaque produces the harmful acids and chemicals that cause tooth decay and discoloration. 1996 Taste of Safeway 8/2 Floss your teeth at least once a day to remove the plaque that your toothbrush is unable to reach. < as lemmas |
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