{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282679979228544.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.5834/jdh.34.109"}},{"identifier":{"@type":"NAID","@value":"130001314997"}},{"identifier":{"@type":"URI","@value":"https://search.jamas.or.jp/link/ui/1985150640"}}],"dc:title":[{"@value":"フッ化物溶液作用エナメル質における生成フルオロアパタイトのＸ線回折法による研究"},{"@language":"en","@value":"X-ray Diffraction Analysis of the Fluorapatite Formation during the Topical Fluoride Agents Treatment of Tooth Enamel"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"The present study was made to examine the effects of two topical fluoride agents on the fluorapatite formation in enamel powder by X-ray diffractometry using the template technique. Fluoride topical application and fluoride mouth rinse were applied <I>in vitro</I> to enamel powder (200 mesh), and the findings were compared. Acidulated phosphate fluoride solution (F<SUP>-</SUP>: 9000 ppm, pH 3.6) was used as the fluoride topical application (F.T.A.) and phosphoric acid-acidified NaF solution (F<SUP>-</SUP>: 500 ppm, pH 5.0) was used as the fluoride mouth rinse (F.M.R.). X-ray diffractometry was performed with an automatic recording X-ray diffractometer. The reaction products were identified by comparison with ASTM indices. For the determination and identification of reaction products, templates were made of the (410) diffraction line profile of the reference substance after heating it at 1, 000°C for 5 hours. A part of the experimental samples were also heated. These templates were used to determine the amount of fluorapatite by comparison of alterations in the diffraction line profiles, and peak shifts in the a-axis of enamel apatite after heating. The determination of β-tricalcium phosphate produced by heating was carried out by X-ray diffractometry using the internal standard technique.<BR>The following results were obtained.<BR>The amount of fluorapatite formed in the enamel powder was estimated at about 20% for F.T.A., and about 35% for F.M.R.. In the experiments with F.T.A., a large amount of CaF<SUB>2</SUB> was produced, which was released with time by washing, after the formation of fluorapatite. A large amount of fluorapatite with high crystallinity was produced by the repeated treatment with F.M.R. solution.<BR>Hydroxyfluor-apatite and/or fluoridated hydroxyapatite was indicated in the line profile of fluoride treated enamel. Peak shift and decrease of the a-axis lattice parameter in F.M.R. also showed the formation of hydroxyfluonapatite. The amount of g-tricalcium phosphate produced by heating in enamel treated with F.M.R. solution decreased with time. These facts indicate a decrease in the amount of imperfect hydroxyapatite and the restoration of lattice imperfections in enamel apatite after the application of F. M. R..<BR>Thus, the repeated application of fluoride mouth rinse over a long period will produce hydroxy-fluor-apatite without decalcifying the enamel and thus will exert a favorable effect on enamel apatite."},{"@value":"フッ化物歯面塗布液およびフッ化物洗口液とエナメル質との反応により生成するフルオロアパタイトの定量的観察を行うことにより, 両フッ化物応用法のエナメル質への作用機序を比較検討することを目的として, X線回折法を用いてtemplate法により検索を行った。フッ化物歯面塗布液としてはフッ素濃度9,000ppm, pH3.6のリン酸酸性フッ化ナトリウム溶液を, フッ化物洗口液にはフッ素濃度500ppm, pH5.0のリン酸酸性フッ化ナトリウム溶液を用いた。<BR>フッ化物溶液作用エナメル質および各種標準試料を1,000℃にて5時間加熱してX線回折線の尖鋭化を行い, 生成フルオロアパタイトについてa軸格子定数の測定を行ったのち, その定量は標準試料の (410) 回折線について作製したtemplateと実験試料のline profileおよびpeak shiftの状態を対比することにより行った。<BR>また, エナメル質の加熱により生成するβ-リン酸三カルシウム量の測定を行い, エナメル質アパタイトの結晶性との関連性についても検討を加えた。<BR>その結果, フッ化物溶液作用によりエナメル質中に生成するフルオロアパタイトはHydroxyfluoragatite (HFA) であり, フッ化物歯面塗布液作用エナメル質では作用後8週でエナメル質中に生成したフルオロアパタイトは約20%, フッ化物洗口液作用エナメル質では約35%であることが示された。<BR>また, フッ化物歯面塗布液作用エナメル質では多量のフッ化カルシウムの生成を認め, その後, フッ化カルシウムの流出と同時にHFAの生成という過程をたどるのに対し, フッ化物洗口液作用エナメル質ではフッ素取り込み量の増加にともない, かなり結晶性の高いHFAが多量に生成することが認められ, エナメル質アパタイトの結晶性向上 (格子不整修復) が示唆された。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410282679979228544","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000020487418"}],"foaf:name":[{"@language":"en","@value":"NAKANISHI Kunio"},{"@language":"ja","@value":"中西 國夫"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Oral Health and Preventive Dentistry, Gifu College of Dentistry"},{"@language":"ja","@value":"岐阜歯科大学口腔衛生学教室"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00232831"},{"@type":"EISSN","@value":"21897379"}],"prism:publicationName":[{"@language":"en","@value":"JOURNAL OF DENTAL HEALTH"},{"@language":"ja","@value":"口腔衛生学会雑誌"},{"@language":"en","@value":"J Dent Hlth"},{"@language":"ja","@value":"口腔衛生会誌"}],"dc:publisher":[{"@language":"en","@value":"Japanese Society for Oral Health"},{"@language":"ja","@value":"一般社団法人 口腔衛生学会"}],"prism:publicationDate":"1984","prism:volume":"34","prism:number":"2","prism:startingPage":"109","prism:endingPage":"123"},"reviewed":"false","url":[{"@id":"https://search.jamas.or.jp/link/ui/1985150640"}],"availableAt":"1984","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Fluoride%20topical%20application","dc:title":"Fluoride topical application"},{"@id":"https://cir.nii.ac.jp/all?q=Fluoride%20mouth%20rinse","dc:title":"Fluoride mouth rinse"},{"@id":"https://cir.nii.ac.jp/all?q=X-ray%20diffraction","dc:title":"X-ray diffraction"},{"@id":"https://cir.nii.ac.jp/all?q=Enamel%20powder","dc:title":"Enamel powder"},{"@id":"https://cir.nii.ac.jp/all?q=Fluorapatite","dc:title":"Fluorapatite"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%95%E3%83%83%E5%8C%96%E7%89%A9%E6%AD%AF%E9%9D%A2%E5%A1%97%E5%B8%83%E6%B3%95","dc:title":"フッ化物歯面塗布法"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%95%E3%83%83%E5%8C%96%E7%89%A9%E6%B4%97%E5%8F%A3%E6%B3%95","dc:title":"フッ化物洗口法"},{"@id":"https://cir.nii.ac.jp/all?q=X%E7%B7%9A%E5%9B%9E%E6%8A%98","dc:title":"X線回折"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%82%A8%E3%83%8A%E3%83%A1%E3%83%AB%E8%B3%AA%E7%B2%89%E6%9C%AB","dc:title":"エナメル質粉末"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%95%E3%83%AB%E3%82%AA%E3%83%AD%E3%82%A2%E3%83%91%E3%82%BF%E3%82%A4%E3%83%88","dc:title":"フルオロアパタイト"}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0016959867"},{"@type":"CROSSREF","@value":"10.5834/jdh.34.109"},{"@type":"CIA","@value":"130001314997"}]}