Y-TZP surface treatments and their effects on the bond strength to resin cement

  • Michele Mirian May Federal University of Santa Maria
  • Ana Maria Estivalete Marchionatti Federal University of Santa Maria https://orcid.org/0000-0003-1634-699X
  • Luiz Felipe Valandro Federal University of Santa Maria
  • Edson Luiz Foletto Federal University of Santa Maria
  • Lucio Strazzabosco Dorneles Federal University of Santa Maria
  • Liliana Gressler May Federal University of Santa Maria
Keywords: Adhesives, Ceramics, Yttrium, Resin cements.

Abstract

Aim: This study evaluated the effect of surface treatments of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramics on their bond strength to a resin cement. Methods: Seventy zirconia blocks (6 × 6 × 2 mm3, IPS e.max ZirCAD) were assigned into 7 groups (n=10) – as-sintered (AS), no treatment; tribochemical silica coating + silanization (TBS; Cojet-sand; ProSil); airabrasion with 45 μm alumina particles + universal primer (AAP; Monobond®Plus); fusion sputtering (FS); SiO2 nanofilm + silanization (SN; ProSil); FS+SN+ silanization (FSSN; ProSil); FS+SN+Universal Primer (FSSNP; Monobond®Plus). Afterwards, a resin cement (RelyX™ ARC) was applied inside cylinders (Ø = 0.96 mm × 1 mm height) placed on the zirconia surfaces. Microshear bond strength tests (μSBS) were carried out (1 mm/min). Failure and phase transformation analysis were performed. Bond strength data (MPa) were subjected to Kruskal-Wallis/Mann Whitney tests. Results: TBS (27 ± 1.2) and AAP (24.7 ± 0.8) showed higher bond strengths than the other groups, followed by FSSNP (15.5 ± 4.2) and FSSN (13.3 ± 3.6). FS (3.4 ± 0.44) and SN (9.5 ± 2.7) showed the lowest values (p < 0.001). Most of the specimens exhibited an adhesive failure. Conclusion: Air-abrasion by silica-coated alumina particles followed by silanization or by alumina particles followed by universal primer resulted in the highest resin bond strength to zirconia. Fusion sputtering and silica nanofilm deposition induced low strengths. However, when these methods are applied in combination and with a primer (FSSN and FSSNP), higher bond strengths may be achieved. Low bond strengths are obtained when no zirconia treatment is performed.

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Author Biographies

Michele Mirian May, Federal University of Santa Maria

Post graduate Program in Oral Science, Prothodontic Unit, Federal University of Santa Maria, Rio Grande do Sul, Brazil.

Ana Maria Estivalete Marchionatti, Federal University of Santa Maria

Post graduate Program in Oral Science, Prothodontic Unit, Federal University of Santa Maria, Rio Grande do Sul, Brazil

Luiz Felipe Valandro, Federal University of Santa Maria

Post graduate Program in Oral Science, Prothodontic Unit, Federal University of Santa Maria, Rio Grande do Sul, Brazil.

Edson Luiz Foletto, Federal University of Santa Maria

Department of Chemical Engineering, Federal University of Santa Maria, Rio Grande do Sul, Brazil.

Lucio Strazzabosco Dorneles, Federal University of Santa Maria

Physics Department, Federal University of Santa Maria, Rio Grande do Sul, Brazil.

Liliana Gressler May, Federal University of Santa Maria

Post graduate Program in Oral Science, Prothodontic Unit, Federal University of Santa Maria, Rio Grande do Sul, Brazil.

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Published
2019-04-08
How to Cite
May, M. M., Marchionatti, A. M. E., Valandro, L. F., Foletto, E. L., Dorneles, L. S., & May, L. G. (2019). Y-TZP surface treatments and their effects on the bond strength to resin cement. Brazilian Journal of Oral Sciences, 18, e190918. https://doi.org/10.20396/bjos.v18i0.8655141