Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia

The purpose of this work was to evaluate the interaction of different layering porcelains with zirconia via shearbond strength test and microscopy. Four different groups of dental veneering porcelains (VM9, Zirkonzanh,Ceramco, IPS) were fused onto forty zirconia-based cylindrical substrates (8 mm in...

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Principais autores:	Diniz, Alexandre C., Nascimento, Rubens Maribondo do, Souza, Júlio César Matias, Henriques, Bruno B., Carreiro, Adriana da Fonte Porto
Formato:	article
Idioma:	English
Publicado em:	Elsevier
Assuntos:	Dental porcelain Zirconia Shear test Metal-free Fracture
Endereço do item:	https://repositorio.ufrn.br/jspui/handle/123456789/28597
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spelling	ri-123456789-285972021-08-16T14:14:09Z Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia Diniz, Alexandre C. Nascimento, Rubens Maribondo do Souza, Júlio César Matias Henriques, Bruno B. Carreiro, Adriana da Fonte Porto Dental porcelain Zirconia Shear test Metal-free Fracture The purpose of this work was to evaluate the interaction of different layering porcelains with zirconia via shearbond strength test and microscopy. Four different groups of dental veneering porcelains (VM9, Zirkonzanh,Ceramco, IPS) were fused onto forty zirconia-based cylindrical substrates (8 mm in diameter and 12 mm inheight) (n= 10), according to the manufacturer's recommendations. Additionally, layered dental porcelain(D-sign, Ivoclar) wasfired on ten Ni–Cr cylindrical substrates Shear bond strength tests of the veneering porce-lain to zirconia or Ni–Cr were carried out at a crosshead speed of 0.5 mm/min. After the shear bond tests, the in-terfaces were analyzed by scanning electron microscopy (SEM). The fracture type exhibited by the differentsystems was also assessed. The results were statistically analyzed by ANOVA at a significant level ofpb.05.The shear bond strength values of the porcelain-to-NiCr interfaces (25.3 ± 7.1 MPa) were significantly higherthan those recorded for the following porcelain-to-zirconia systems: Zirkonzanh (18.8 ± 1 MPa), Ceramco(18.2 ± 4.7 MPa), and IPS (16 ± 4.5 MPa). However, no significant differences were found in the shear bondstrength values between the porcelain-to-NiCr and porcelain (VM9)-to-zirconia (23.2 ± 5.1 MPa) groups(pN.05). All-ceramic interfaces revealed mixed failure type, cohesive in the porcelain and adhesive atthe interface.This study demonstrated that all-ceramic systems do not attain yet the same bond strength standards equivalentto metal–ceramic systems. Therefore, despite the esthetic appeal of all-ceramic restorations, the adhesionbetween the porcelain and zirconia framework is still an issue considering the long term success of therestoration. 2020-03-20T14:07:59Z 2020-03-20T14:07:59Z 2014-05 article DINIZ, ALEXANDRE C. ; Nascimento, Rubens M. ; SOUZA, JULIO C.M. ; HENRIQUES, B. ; CARREIRO, ADRIANA F.P. . Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia. Materials Science & Engineering. C, Biomimetic Materials, Sensors and Systems (Print), v. 38, p. 79-84, 2014. Disponível em: https://www.sciencedirect.com/science/article/pii/S092849311400040X?via%3Dihub. Acesso em: 20 mar. 2020. https://doi.org/10.1016/j.msec.2014.01.032. 0928-4931 https://repositorio.ufrn.br/jspui/handle/123456789/28597 en application/pdf Elsevier
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Dental porcelain Zirconia Shear test Metal-free Fracture
spellingShingle	Dental porcelain Zirconia Shear test Metal-free Fracture Diniz, Alexandre C. Nascimento, Rubens Maribondo do Souza, Júlio César Matias Henriques, Bruno B. Carreiro, Adriana da Fonte Porto Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
description	The purpose of this work was to evaluate the interaction of different layering porcelains with zirconia via shearbond strength test and microscopy. Four different groups of dental veneering porcelains (VM9, Zirkonzanh,Ceramco, IPS) were fused onto forty zirconia-based cylindrical substrates (8 mm in diameter and 12 mm inheight) (n= 10), according to the manufacturer's recommendations. Additionally, layered dental porcelain(D-sign, Ivoclar) wasfired on ten Ni–Cr cylindrical substrates Shear bond strength tests of the veneering porce-lain to zirconia or Ni–Cr were carried out at a crosshead speed of 0.5 mm/min. After the shear bond tests, the in-terfaces were analyzed by scanning electron microscopy (SEM). The fracture type exhibited by the differentsystems was also assessed. The results were statistically analyzed by ANOVA at a significant level ofpb.05.The shear bond strength values of the porcelain-to-NiCr interfaces (25.3 ± 7.1 MPa) were significantly higherthan those recorded for the following porcelain-to-zirconia systems: Zirkonzanh (18.8 ± 1 MPa), Ceramco(18.2 ± 4.7 MPa), and IPS (16 ± 4.5 MPa). However, no significant differences were found in the shear bondstrength values between the porcelain-to-NiCr and porcelain (VM9)-to-zirconia (23.2 ± 5.1 MPa) groups(pN.05). All-ceramic interfaces revealed mixed failure type, cohesive in the porcelain and adhesive atthe interface.This study demonstrated that all-ceramic systems do not attain yet the same bond strength standards equivalentto metal–ceramic systems. Therefore, despite the esthetic appeal of all-ceramic restorations, the adhesionbetween the porcelain and zirconia framework is still an issue considering the long term success of therestoration.
format	article
author	Diniz, Alexandre C. Nascimento, Rubens Maribondo do Souza, Júlio César Matias Henriques, Bruno B. Carreiro, Adriana da Fonte Porto
author_facet	Diniz, Alexandre C. Nascimento, Rubens Maribondo do Souza, Júlio César Matias Henriques, Bruno B. Carreiro, Adriana da Fonte Porto
author_sort	Diniz, Alexandre C.
title	Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
title_short	Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
title_full	Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
title_fullStr	Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
title_full_unstemmed	Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
title_sort	fracture and shear bond strength analyses of different dental veneering ceramics to zirconia
publisher	Elsevier
publishDate	2020
url	https://repositorio.ufrn.br/jspui/handle/123456789/28597
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Fracture and shear bond strength analyses of different dental veneering ceramics to zirconia

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