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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
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/
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
Type: article (author version)
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)

Submitter: 星加 修平

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