Yttria-stabilized tetragonal zirconia polycrystal/resin luting agent bond strength: Influence of Titanium dioxide nanotubes addition in both materials

Author(s)

Rodrigues Magalhaes, Ana Paula ^[1] ; Ramos-Tonello, Carla Muller ^[1] ; Galli, Mateus Zamora ^[1] ; Gomes, Orisson Ponce ^[2] ; Pacheco, Leandro Edgar ^[1] ; Fortulan, Carlos Alberto ^[3] ; Lisboa-Filho, Paulo Noronha ^[2] ; Lia Mondelli, Rafael Francisco ^[1] ; Furuse, Adilson Yoshio ^[1] ; Sanches Borges, Ana Flavia ^[1]

Affiliation

^[1] Univ SCio Paulo USP, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Al Octavio Pinheiro Brisola 9-75, BR-17012901 Bauru, SP - Brazil

^[2] Univ Sao Paulo, Dept Mech Engn, Ave Trabalhadores Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

^[3] State Univ Sao Paulo, UNESP, Fac Sci, Phys Dept, Av Eng Luis Edmundo Carrijo Coube 14, BR-17033360 Bauru, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF PROSTHODONTIC RESEARCH; v. 64, n. 4, p. 408-416, OCT 2020.
• Web of Science Citations: 0

Abstract

Purpose: To evaluate the shear bond strength (SBS) between Y-TZP and a resin luting agent, after 1 of 2 enhancing strategies with TiO2-nts was applied, either to the resin luting agent or the Y-TZP mass, in different concentrations. Methods: In the Strategy TiO2-nts on ceramic, the resin luting agent Panavia F2.0TM (Kuraray) and an experimental Y-TZP with added concentrations of TiO2-nts (0%, 1%, 2%, and 5% vol/vol) and a commercial Y-TZP, comprised 5 different groups (n = 10). In the Strategy TiO2-nts on cement, the resin luting agent RelyX U200 (TM) (3 M ESPE) was added with different concentrations of TiO2-nts (0%, 0.3%, 0.6%, 0.9% wt/wt) luted to a commercial Y-TZP, comprising 4 different groups (n = 10). The Y-TZP discs were included in acrylic bases, and a cylinder (3 x 3 mm) of the correspondent luting agent for each respective group was applied over them. After 24 h, specimens were subjected to SBS assessments in a universal testing machine. Field emission scanning electron microscopy and energy dispersive X-ray spectroscopy analyses were also performed on Y-TZP surfaces. Data were analyzed via analysis of variance and Tukey tests (alpha = 0.05). Results: TiO2-nts on ceramic influenced the bond strength significantly, but not linearly; TiO2-nts on cement did not influence bond strength when analyzed separately, nor in comparison with the first. Conclusion: Y-TZP enhancements with TiO2-nts led to a higher SBS with Panavia F2.0, a 5% TiO2-nt concentration presented the highest bond strength. Modified Rely X U200 did not improve SBS. (C) 2020 Published by Elsevier Ltd on behalf of Japan Prosthodontic Society. (AU)

• FAPESP's process: 11/18061-0 - Structural and mechanical analysis and copings of experimental zirconia for use CAD/CAM system
• Grantee: Ana Flávia Sanches Borges
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC