UV-Mediated Photofunctionalization of Indirect Restorative Materials Enhances Bonding to a Resin-Based Luting Agent

• Ishikawa, Kyoko

• Yamauti, Monica

• Tichy, Antonin

• Ikeda, Masaomi

• Ueno, Takeshi

• Wakabayashi, Noriyuki

• Thanatvarakorn, Ornnicha

• Prasansuttiporn, Taweesak

• Klein-Junior, Celso Afonso

• Takahashi, Akifumi

• Takagaki, Tomohiro

• Nakajima, Masatoshi

• Tagami, Junji

• Hosaka, Keiichi

• Turki Bakhsh

  editor

Abstract

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

• BioMed Research International

  BioMed Research International 2021 9987860-, 2021-05-30

  Hindawi

Keywords

• General Immunology and Microbiology
• General Biochemistry, Genetics and Molecular Biology
• General Medicine

Details

• CRID: 1050289455228249216
• NII Article ID: 120007147673
• ISSN: 23146133
• ISSN: 23146141
• DOI: 10.1155/2021/9987860
• Web Site: http://repo.lib.tokushima-u.ac.jp/116274
• Web Site: http://downloads.hindawi.com/journals/bmri/2021/9987860.pdf
• Web Site: http://downloads.hindawi.com/journals/bmri/2021/9987860.xml
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN