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Fluoride therapy : ウィキペディア英語版 | Fluoride therapy
Fluoride therapy is the delivery of fluoride to the teeth, topically or systemically, to protect them from dental caries (cavities). Strictly speaking, fluoride therapy repairs rather than prevents damage to the teeth, causing the mineral fluorapatite to be incorporated into damaged tooth enamel. Fluorapatite is not a natural component of human teeth, although it is found in the teeth of sharks. The main mineral found in natural tooth enamel is hydroxyapatite rather than the fluorapatite created in the presence of fluoride. Even without fluoride, teeth experience alternating increases and decreases in mineral content, depending upon how acidic or basic the mouth is, and depending upon the concentration of other substances in the mouth, such as phosphate and calcium. Fluoride enhances and modifies the restoration of the mineral content of the teeth, and counteracts the breakdown of the teeth from lactic acid producing bacteria. The purpose of tooth-brushing is twofold: to mechanically remove plaque, and also to apply fluoride to the tooth surface, promoting re-mineralisation with fluorapatite. In topical fluoride therapies, fluoride is applied directly to the surface of the teeth, most commonly by means of a fluoride toothpaste. Other topical fluoride therapies include fluoridated mouth rinses, lozenges, gels, foams, and varnishes. In systemic fluoride therapies, fluoride is swallowed as an additive to drinking water, salt, or milk, or as an ingredient in tablets, lozenges, or drops. Where public water supplies are fluoridated, other systemic fluoride therapies are not recommended. == Benefits == Fluoridation is universally accepted by dentists and other medical professionals as being useful in preventing tooth decay. The U.S. Center for Disease Control lists fluoridating drinking water as one of the "ten greatest public health achievements of the 20th century."〔http://www.cdc.gov/mmwr/preview/mmwrhtml/00056796.htm〕 It is therefore understandable that fluoride therapy would be commonly practiced and in many modalities. Many types of fluoride therapies are known, ranging from use of fluoridated toothpaste at-home to professionally administered topical fluorides provided by dental offices,〔 to publicly sponsored fluoridation of water or other commonly ingested materials such as salt. At-home therapies can be further divided into over-the-counter (OTC) and prescription strengths. The fluoride therapies, whether OTC or PATF, are categorized by application – dentifrices, mouth rinses, gels/foams, varnishes, dietary fluoride supplements, and water fluoridation.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Fluoride therapy」の詳細全文を読む
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