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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of different power settings of Er,Cr:YSGG laser before or after tribosilicatization on the microshear bond strength between zirconia and two types of cements

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Author(s):
Zeidan, Leonardo C. [1] ; Esteves, Camila M. [1] ; Oliveira, Juliana A. [1] ; Brugnera, Jr., Aldo [2] ; Cassoni, Alessandra [1] ; Rodrigues, Jose Augusto [1]
Total Authors: 6
Affiliation:
[1] Univ Guarulhos, Sch Dent, Dept Restorat Dent, Pos Grad Odontol, Praca Teresa Cristina, 229 Ctr, BR-07023070 Guarulhos, SP - Brazil
[2] Univ Camilo Castelo Branco, Fernandopolis - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Lasers in Medical Science; v. 33, n. 2, p. 233-240, FEB 2018.
Web of Science Citations: 1
Abstract

The aim of this study was to evaluate the effect of different output powers of Er,Cr:YSGG laser and the association with tribochemical silica coating on the bond strength between zirconia ceramic and two resin cements. One hundred ninety-two zirconia ceramic bars (IPS e-max ZirCAD Ivoclar Vivadent-) were sectioned (6 x 6 x 4 mm), sintered, and randomly divided into 12 groups for each cement system according to the surface treatment (n = 8): C-without treatment (control); R-tribochemical coating + resin cement (control); 2L-laser (2.0 W) + resin cement; 2LR-laser (2.0 W) + tribochemical coating + resin cement; R2L-tribochemical coating + laser (2.0 W) + resin cement; 2.5L-laser (2.5 W) + resin cement; 2.5LR-laser (2.5 W) + tribochemical coating + resin cement; R2.5L-tribochemical coating + laser (2.5 W) + resin cement; 3L-laser (3.0 W) + resin cement; 3LR-laser (3.0 W) + tribochemical coating + resin cement, R3L-tribochemical coating + laser (3.0 W) + resin cement; and RPHO-tribochemical + resin cement + photoactivation (control). After the surface treatment, the respective primers were applied, and resin cements, Multilink N, Ivoclar Vivadent (M), and Panavia F 2.0, Kuraray Medical Inc. (P), were inserted into Tygon molds which were bonded to the zirconia bars. Each specimen received two cements bars. After 24 h of storage in a relative humidity (100%) at 37 A degrees C, they were evaluated by the microshear test speed of 1 mm/min. The microshear values were analyzed by one-way ANOVA and Tukey's test (alpha = 0.05). ANOVA showed statistically significant differences among the evaluated groups. The highest bond strength was observed in RPHO, which statistically differed from all groups. The lowest bond strength was observed in M2.5L (Multilink N) and in P3LR (Panavia F 2.0). It can be concluded that the lowest power output tested was suitable and showed bond strength values similar to tribochemical silica deposition. The light curing is important to adhesion and the tribosilicatizated surface achieves similar microshear values to untreated surface in absence of light. (AU)

FAPESP's process: 12/14839-0 - Surface treatment evaluation of ceramic to adhesive cements
Grantee:Alessandra Cassoni Ferreira
Support Opportunities: Regular Research Grants