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ID 116274
Author
Ishikawa, Kyoko Tokyo Medical and Dental University
Yamauti, Monica Tokyo Medical and Dental University|Hokkaido University
Tichy, Antonin The Charles University|General University Hospital in Prague
Ikeda, Masaomi Tokyo Medical and Dental University
Ueno, Takeshi Tokyo Medical and Dental University
Wakabayashi, Noriyuki Tokyo Medical and Dental University
Thanatvarakorn, Ornnicha Bangkok Thonburi University
Prasansuttiporn, Taweesak Chiang Mai University
Klein-Junior, Celso Afonso Lutheran University of Brazil
Takahashi, Akifumi The Nippon Dental University
Takagaki, Tomohiro Asahi University
Nakajima, Masatoshi Tokyo Medical and Dental University
Tagami, Junji Tokyo Medical and Dental University
Content Type
Journal Article
Description
Purpose. The potential of UV-mediated photofunctionalization to enhance the resin-based luting agent bonding performance to aged materials was investigated. Methods. Sixty samples of each material were prepared. Yttria-stabilized zirconia (YZr) and Pd-Au alloy (Pd-Au) plates were fabricated and sandblasted. Lithium disilicate glass-ceramic (LDS) was CAD-CAM prepared and ground with #800 SiC paper. Half of the specimens were immersed in machine oil for 24 h to simulate the carbon adsorption. Then, all of the specimens (noncarbon- and carbon-adsorbed) were submitted to UV-mediated photofunctionalization with a 15 W UV-LED (265 nm, 300 mA, 7692 μW/cm2) for 0 (control groups), 5, and 15 min and subjected to contact angle (Ɵ) measurement and bonded using a resin cement (Panavia™ V5, Kuraray Noritake, Japan). The tensile bond strength (TBS) test was performed after 24 h. The Ɵ (°) and TBS (MPa) data were statistically analyzed using two-way ANOVA and Bonferroni correction tests (α= 0.05). Results. In the carbon-adsorbed groups, UV-mediated photofunctionalization for 5 min significantly decreased Ɵ of all materials and increased TBS of YZr, and UV for 15 min significantly increased the TBS of LDS and Pd-Au. In noncarbon-adsorbed groups, UV-photofunctionalization did not significantly change the Ɵ or TBS except YZr specimens UV-photofunctionalized for 15 min. Conclusion. UV-mediated photofunctionalization might have removed the adsorbed hydrocarbon molecules from the materials’ surfaces and enhanced bond strengths of Panavia™ V5 to YZr, LDS, and Pd-Au. Additionally, UV-mediated photofunctionalization improved the overall TBS of YZr. Further investigation on the optimum conditions of UV photofunctionalization on indirect restorative materials should be conducted.
Journal Title
BioMed Research International
ISSN
23146133
23146141
Publisher
Hindawi
Volume
2021
Start Page
9987860
Published Date
2021-05-30
Rights
This is an open access article distributed under the Creative Commons Attribution License(https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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language
eng
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departments
Oral Sciences