ケイ酸カルシウム系歯内療法用材料による脱灰象牙質再石灰化  [in Japanese] Remineralization of artificially-demineralized dentin by calcium silicate-based endodontic materials  [in Japanese]

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Author(s)

    • 韓 臨麟 Linlin HAN
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座う蝕学分野 Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences
    • 興地 隆史 Takashi OKIJI
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座う蝕学分野 Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences

Abstract

<p><b>Abstract : </b>Calcium silicate-based endodontic materials such as Mineral Trioxide Aggregate (MTA) have the ability to release mineral ions such as Ca<sup>2+</sup>. This study aimed to examine the dentin remineralization ability of set calcium silicate-based materials under a phosphate-containing environment. Biodentine<sup>TM</sup> (Septodont, France) and white ProRoot<sup>®</sup> MTA (Dentsply Tulsa Dental, OK) were used as test materials. Dentin plates prepared from extracted human molars were artificially demineralized with a lactic acid solution (pH 4.5). Following the placing of a set cement disk prepared from one of the materials on the demineralized surface, each dentin specimen was individually immersed in phosphate buffered saline (PBS) for 14 days (<i>n</i>=5 for each cement). Morphology and elemental composition of the dentin specimens were analyzed with a scanning electron microscope and a wavelength-dispersive X-ray spectroscopy electron probe microanalyzer. Results demonstrated that the demineralized dentin specimens in contact with each material showed surface and intratubular precipitate formation, intertubular mineral deposition and incorporation of Ca and Si. The incorporation depths were not significantly different between the two materials (<i>p</i>>0.05, Student's <i>t</i>-test). It was concluded that set Biodentine<sup>TM</sup> and ProRoot<sup>®</sup> MTA promoted the remineralization of artificially-demineralized dentin in the presence of PBS.</p>

Journal

  • The Journal of Japan Endodontic Association

    The Journal of Japan Endodontic Association 34(3), 128-134, 2013

    Japan Endodontic Association

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