ID | 55297 |
フルテキストURL | |
著者 |
Yoshihara, Kumiko
Centrer for Innovative Clinical Medicine, Okayama University Hospital
Nagaoka, Noriyuki
Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School
Maruo, Yukinori
Department of Occlusion and Removable Prosthodontics, Okayama University Hospital
Nishigawa, Goro
Department of Occlusion and Removable Prosthodontics, Okayama University Hospital
Irie, Masao
Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Yoshida, Yasuhiro
Department of Biomaterials and Bioengineering, Graduate School of Dental Medicine, Hokkaido University
Meerbeekf, Bart Van
KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & University Hospitals
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抄録 | OBJECTIVE:
CAD-CAM blocks to fabricate semi-direct and indirect restorations are available in different sorts of ceramics as well as composite. In order to bond restorations prepared out of composite blocks into tooth cavities, it is recommended to gently sandblast the surface prior to the application of a primer/adhesive. Today, the effect of sandblasting composite block surfaces has not thoroughly been investigated. In this study, the ultra-structure of composite CAD-CAM blocks was investigated with special attention to the effect of sandblasting on the surface topography and of silanization on the bonding performance.
METHODS:
Five different composite CAD-CAM blocks were involved. We correlatively investigated their structural and chemical composition using X-ray diffraction (XRD), energy dispersion spectroscopy (EDS), scanning electron microscopy (SEM) and (scanning) transmission electron microscopy ((S)TEM). The effect of sandblasting was also imaged in cross-section and at the interface with composite cement. Finally, we measured the shear bond strength to the sandblasted block surface with and without silanization.
RESULTS:
All composite blocks revealed a different ultra-structure. Sandblasting increased surface roughness and resulted in an irregular surface with some filler exposure. Sandblasting also damaged the surface. When the sandblasted composite blocks were silanized, superior bonding receptiveness in terms of higher bond strength was achieved except for Shofu Block HC.
SIGNIFICANCE:
Sandblasting followed by silanization improved the bond strength to composite CAD-CAM blocks. However, sandblasting may also damage the composite CAD-CAM block surface. For the composite CAD-CAM block Shofu Block HC, the damage was so severe that silanization did not improve bond strength.
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キーワード | CAD–CAM
bond strength
composite
sandblast
silane coupling agent
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発行日 | 2017-03
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出版物タイトル |
Dental Materials
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巻 | 33巻
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号 | 3号
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出版者 | Elsevier Science
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開始ページ | e124
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終了ページ | e135
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ISSN | 0109-5641
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NCID | AA10443138
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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論文のバージョン | author
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PubMed ID | |
DOI | |
Web of Science KeyUT | |
関連URL | isVerionOf https://doi.org/10.1016/j.dental.2016.12.003
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