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Effect of conditioning and 1 year aging on the bond strength and interfacial morphology of glass-ionomer cement bonded to dentin
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Title: | Effect of conditioning and 1 year aging on the bond strength and interfacial morphology of glass-ionomer cement bonded to dentin |
Authors: | Hoshika, Shuhei Browse this author →KAKEN DB | Ting, Shihchun Browse this author | Ahmed, Zubaer Browse this author | Chen, Fei Browse this author | Toida, Yu Browse this author | Sakaguchi, Norihito Browse this author →KAKEN DB | Van Meerbeek, Bart Browse this author | Sano, Hidehiko Browse this author →KAKEN DB | Sidhu, Sharanbir K Browse this author |
Keywords: | Adhesion | Dentin | Glass-ionomer cement | Micro-tensile bond strength | Transmission Electron Microscopy |
Issue Date: | Jan-2021 |
Journal Title: | Dental Materials |
Volume: | 37 |
Issue: | 1 |
Start Page: | 106 |
End Page: | 112 |
Publisher DOI: | 10.1016/j.dental.2020.10.016 |
PMID: | 33229039 |
Abstract: | Objective: The purpose of this study was to determine the bond stability and the change in interfacial ultra-structure of a conventional glass-ionomer cement bonded to dentin, with and without pre-treatment using a polyalkenoic acid conditioner. Methods: The occlusal dentin surfaces of six teeth were ground flat. Glass-ionomer cement was bonded to the surfaces either with or without polyalkenoic acid conditioning. The teeth were sectioned into 1-mm2 stick-shaped specimens. The specimens obtained were randomly assigned to two groups with different periods of storage in water: 1 week and 1 year. The micro-tensile bond strength (μTBS) was determined for each storage time. Additional specimens were prepared for Transmission Electron Microscopy (TEM); they were produced with or without prior polyalkenoic acid conditioning in the same way as in the μTBS test. Results: There was no significant difference in μTBS to conditioned dentin and non-conditioned dentin (p > 0.05). The failures appeared to be of a mixed nature, although aging caused more areas of cohesive than adhesive failure in both groups. The TEM observation showed an intermediate layer, a matrix-rich layer and a partially demineralized layer in the polyalkenoic acid conditioned group. Significance: Aging did not reduce the bond strength of the conventional glass-ionomer cement to dentin with or without the use of a polyalkenoic acid conditioner. |
Rights: | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/83743 |
Appears in Collections: | 歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 星加 修平
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