Fluoride acquisition on and in human enamel during topical application <i>in vitro</i>

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書誌事項

公開日
1988-12
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1111/j.1600-0722.1988.tb01592.x
公開者
Wiley

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説明

<jats:p><jats:bold>Abstract – </jats:bold> Fluoride acquisition during topical fluoride treatment was studied after different time intervals, at different concentrations and at different pH. The effects of pretreating the enamel with Ca<jats:sup>++</jats:sup>, and of pre‐etching were also tested. Four experimental groups of repeated measures design were established. Chemical assessments were made of the amounts of fluoride formed <jats:italic>on</jats:italic> (as alkali soluble fluoride, i.e., calcium fluoride) and <jats:italic>in</jats:italic> enamel (as firmly bound fluoride). The depositions <jats:italic>on</jats:italic> enamel were also demonstrated by SEM. The amounts of alkali soluble fluoride on enamel increased with time, concentration, pH‐decrease and calcium availability. The time of exposure seemed to be the major factor. The amounts of fluoride deposited <jats:italic>on</jats:italic> enamel outranged by far (>70%) the amounts of fluoride acquired <jats:italic>in</jats:italic> the enamel. The formation of alkali soluble fluoride <jats:italic>on</jats:italic> enamel is probably limited by the availability of calcium ions. It is suggested that the fluoride <jats:italic>on</jats:italic> enamel may protect the enamel surface and serve as a reservoir of fluoride.</jats:p>

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