このエントリーをはてなブックマークに追加
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
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.
キーワード
CAD–CAM
bond strength
composite
sandblast
silane coupling agent
発行日
2017-03
出版物タイトル
Dental Materials
33巻
3号
出版者
Elsevier Science
開始ページ
e124
終了ページ
e135
ISSN
0109-5641
NCID
AA10443138
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
論文のバージョン
author
PubMed ID
DOI
Web of Sience KeyUT
関連URL
isVerionOf https://doi.org/10.1016/j.dental.2016.12.003