Open AccessInfluence of surface treatment on the shear strength of Ultra Translucent Multi Layered Zirconia Katana
Author(s) -
Francisco Fernando Massola Filho,
Amanda Gonçalves Franco,
Geraldo Alberto Pinheiro de Carvalho,
Sérgio Cândido Dias,
Elimário Venturin Ramos,
Francisco Martínez Peréz,
Silvio Mecca,
Caio Marques Martins,
Selem Alvarenga Vilela,
Aline Batista Gonçalves Franco
Publication year - 2022
Publication title -
research, society and development
Language(s) - English
Resource type - Journals
ISSN - 2525-3409
DOI - 10.33448/rsd-v11i4.27157
Subject(s) - hydrofluoric acid , materials science , cubic zirconia , adhesive , surface roughness , composite material , scanning electron microscope , bond strength , universal testing machine , primer (cosmetics) , shear strength (soil) , direct shear test , metallurgy , shear (geology) , chemistry , ceramic , geology , ultimate tensile strength , organic chemistry , layer (electronics) , soil water , soil science
The aim of this study is to assess how shear strength of Ultra Translucent Multi Layered Zirconia Katana (UTML) is affected by the conditioning with 10% hydrofluoric acid combined with the current surface treatment protocol: air, primer containing 10-MDP, and cement. Samples of UTML Zirconia Katana were machined to measure 5x5x10 units of measurement, attached, and divided into two groups. In the control group, samples were treated with 27 um aluminum oxide blasting at 4 bars, application of Zr primer containing 10-MDP and, finally, cement Panávia V5. In the experimental group, samples were also treated with 10% hydrofluoric acid following blasting and prior to the primer application. The test specimens were submitted to shear mechanical strength test on a universal testing machine EMIC DL2000 (EMIC, São Paulo, Brazil), surface analysis with Scanning Electron Microscope (SEM) (Sputter Coaster Emitech, K450) and surface roughness. Results showed that the bond strength of specimens conditioned with acid was 41% higher (p = 0.031). Student’s t test showed that the samples conditioned with acid were rougher than those without conditioning (p = 0.045). Microscopic analysis showed surface alterations on samples conditioned with acid. It is possible to conclude that the group conditioned with hydrofluoric acid showed better adhesive behavior.