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However, little is known about the interactions between MTA and glass ionomer cement (GIC) in final restorations. In this study, 2 null hypotheses were tested: (1) GIC placement time does not affect the MTA-GIC structural interface and hardness and (2) moisture does not affect the MTA-GIC structural interface and hardness. Methods: Fifty cylinders were half filled with MTA and divided into 5 groups. The other half was filled with resin-modified GIC either immediately after MTA placement or after 1 or 7 days of temporization in the presence or absence of a wet cotton pellet. The specimens were then sectioned, carbon coated, and examined using a scanning electron microscope and an electron probe microanalyzer (SEM-EPMA) for interfacial adaptation, gap formation, and elemental analysis. The Vickers hardness numbers of the interfacial MTA were recorded 24 hours after GIC placement and 8 days after MTA placement and analyzed using the analysis of variance test. 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Characterization of the mineral trioxide aggregate-resin modified glass ionomer cement interface in different setting conditions
http://hdl.handle.net/10069/29868
http://hdl.handle.net/10069/298683d3cdfa4-8fcc-4d97-8fa8-a3475755812a
名前 / ファイル | ライセンス | アクション |
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JouEnd38_1126.pdf (805.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2012-11-28 | |||||
タイトル | ||||||
タイトル | Characterization of the mineral trioxide aggregate-resin modified glass ionomer cement interface in different setting conditions | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Elemental analysis | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EPMA | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | GIC | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | mineral trioxide aggregate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MTA | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | SEM | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Eid, Ashraf A.
× Eid, Ashraf A.× Komabayashi, Takashi× Watanabe, Etsuko× Shiraishi, Takanobu× Watanabe, Ikuya |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Introduction: Mineral trioxide aggregate (MTA) has been used successfully for perforation repair, vital pulpotomies, and direct pulp capping. However, little is known about the interactions between MTA and glass ionomer cement (GIC) in final restorations. In this study, 2 null hypotheses were tested: (1) GIC placement time does not affect the MTA-GIC structural interface and hardness and (2) moisture does not affect the MTA-GIC structural interface and hardness. Methods: Fifty cylinders were half filled with MTA and divided into 5 groups. The other half was filled with resin-modified GIC either immediately after MTA placement or after 1 or 7 days of temporization in the presence or absence of a wet cotton pellet. The specimens were then sectioned, carbon coated, and examined using a scanning electron microscope and an electron probe microanalyzer (SEM-EPMA) for interfacial adaptation, gap formation, and elemental analysis. The Vickers hardness numbers of the interfacial MTA were recorded 24 hours after GIC placement and 8 days after MTA placement and analyzed using the analysis of variance test. Results: Hardness testing 24 hours after GIC placement revealed a significant increase in hardness with an increase of temporization time but not with a change of moisture conditions (P <.05). Hardness testing 8 days after MTA placement indicated no significant differences among groups. SEM-EPMA showed interfacial adaptation to improve with temporization time and moisture. Observed changes were limited to the outermost layer of MTA. The 2 null hypotheses were not rejected. Conclusions: GIC can be applied over freshly mixed MTA with minimal effects on the MTA, which seemed to decrease with time. | |||||
書誌情報 |
Journal of Endodontics 巻 38, 号 8, p. 1126-1129, 発行日 2012-08 |
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出版者 | ||||||
出版者 | Elsevier Inc. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00992399 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.joen.2012.04.013 | |||||
権利 | ||||||
権利情報 | © 2012 American Association of Endodontists. | |||||
権利 | ||||||
権利情報 | NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Endodontics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Endodontics, 38, 8(2012) | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of Endodontics, 38(8), pp.1126-1129; 2012 |