| 释义 |
fluoridation|ˌfluːərɪˈdeɪʃən|
[f. fluoride: see -ation.]
1. Min. The process by which a mineral absorbs fluorine.
1904Monogr. U.S. Geol. Surv. XLVII. 206 Fluoridation is the addition of fluorine, forming fluorides. 1953Chem. & Engin. News 4 May 1905/1 The earlier, geologic sense of ‘fluoridation’, namely, introduction of fluorine into a mineral, would seem to be more properly fluorination.
2. a. The addition of traces of a fluoride or other source of fluoride ions to drinking-water for the prevention or control of dental caries.
1949Jrnl. Amer. Water Works Assoc. XLI. ii. 576/1 The present demands for the fluoridation of water supplies are coming from the public and the press. 1955Sci. Amer. Apr. 2/2, I believe that a big reason why fluoridation failed to win acceptance was the hasty and somewhat authoritarian way in which it had been introduced. 1958Spectator 6 June 737/2 In Britain many leading dentists and physicians are opposing fluoridation. 1960Times 10 Feb. 7/3 A Bill to introduce the compulsory fluoridation of water. 1966McKeown & Lowe Introd. Social Med. xiii. 139 In the British studies there was a sixty-six per cent reduction in caries among three year old children after the introduction of fluoridation. 1971Daily Tel. 3 June 2/1 Fluoridation of water supplies..has been shown to prevent dental decay.
b. = fluoridization b.
1963Brit. Dental Jrnl. CXIV. 216 Topical fluoridation procedures shoud be discussed only as an alternative to water fluoridation if..a community cannot benefit from water fluoridation. 1965Helv. Odontol. Acta IX. 150 The fluoride content of the outermost enamel layer immediately after topical fluoridation ranged between 1385 and 2800 ppm. |