Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | https://www.revistas.usp.br/jaos/article/view/134186 |
Resumo: | Zirconia-reinforced lithium silicate (ZLS) is a ceramic that promises to have better mechanical properties than other materials with the same indications as well as improved adaptation and fracture strength. Objective In this study, marginal and internal misfit and fracture load with and without thermal-mechanical aging (TMA) of monolithic ZLS and lithium disilicate (LDS) crowns were evaluated. Material and methods Crowns were milled using a computer-aided design/computer-aided manufacturing system. Marginal gaps (MGs), absolute marginal discrepancy (AMD), axial gaps, and occlusal gaps were measured by X-ray microtomography (n=8). For fracture load testing, crowns were cemented in a universal abutment, and divided into four groups: ZLS without TMA, ZLS with TMA, LDS without TMA, and LDS with TMA (n=10). TMA groups were subjected to 10,000 thermal cycles (5-55°C) and 1,000,000 mechanical cycles (200 N, 3.8 Hz). All groups were subjected to compressive strength testing in a universal testing machine at a crosshead speed of 1 mm/min until failure. Student’s t-test was used to examine misfit, two-way analysis of variance was used to analyze fracture load, and Pearson’s correlation coefficients for misfit and fracture load were calculated (α=0.05). The materials were analyzed according to Weibull distribution, with 95% confidence intervals. Results Average MG (p |
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Journal of applied oral science (Online) |
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Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicateDental materialsDental prosthesisX-Ray microtomography Zirconia-reinforced lithium silicate (ZLS) is a ceramic that promises to have better mechanical properties than other materials with the same indications as well as improved adaptation and fracture strength. Objective In this study, marginal and internal misfit and fracture load with and without thermal-mechanical aging (TMA) of monolithic ZLS and lithium disilicate (LDS) crowns were evaluated. Material and methods Crowns were milled using a computer-aided design/computer-aided manufacturing system. Marginal gaps (MGs), absolute marginal discrepancy (AMD), axial gaps, and occlusal gaps were measured by X-ray microtomography (n=8). For fracture load testing, crowns were cemented in a universal abutment, and divided into four groups: ZLS without TMA, ZLS with TMA, LDS without TMA, and LDS with TMA (n=10). TMA groups were subjected to 10,000 thermal cycles (5-55°C) and 1,000,000 mechanical cycles (200 N, 3.8 Hz). All groups were subjected to compressive strength testing in a universal testing machine at a crosshead speed of 1 mm/min until failure. Student’s t-test was used to examine misfit, two-way analysis of variance was used to analyze fracture load, and Pearson’s correlation coefficients for misfit and fracture load were calculated (α=0.05). The materials were analyzed according to Weibull distribution, with 95% confidence intervals. Results Average MG (pUniversidade de São Paulo. Faculdade de Odontologia de Bauru2017-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/13418610.1590/1678-7757-2016-0233Journal of Applied Oral Science; Vol. 25 No. 3 (2017); 282-289Journal of Applied Oral Science; Vol. 25 Núm. 3 (2017); 282-289Journal of Applied Oral Science; v. 25 n. 3 (2017); 282-2891678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/134186/130027Copyright (c) 2017 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessGOMES, Rafael SoaresSOUZA, Caroline Mathias Carvalho deBERGAMO, Edmara Tatiely PedrosoBORDIN, DimorvanDEL BEL CURY, Altair Antoninha2017-06-30T13:43:30Zoai:revistas.usp.br:article/134186Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2017-06-30T13:43:30Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
title |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
spellingShingle |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate GOMES, Rafael Soares Dental materials Dental prosthesis X-Ray microtomography |
title_short |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
title_full |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
title_fullStr |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
title_full_unstemmed |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
title_sort |
Misfit and fracture load of implant-supported monolithic crowns in zirconia-reinforced lithium silicate |
author |
GOMES, Rafael Soares |
author_facet |
GOMES, Rafael Soares SOUZA, Caroline Mathias Carvalho de BERGAMO, Edmara Tatiely Pedroso BORDIN, Dimorvan DEL BEL CURY, Altair Antoninha |
author_role |
author |
author2 |
SOUZA, Caroline Mathias Carvalho de BERGAMO, Edmara Tatiely Pedroso BORDIN, Dimorvan DEL BEL CURY, Altair Antoninha |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
GOMES, Rafael Soares SOUZA, Caroline Mathias Carvalho de BERGAMO, Edmara Tatiely Pedroso BORDIN, Dimorvan DEL BEL CURY, Altair Antoninha |
dc.subject.por.fl_str_mv |
Dental materials Dental prosthesis X-Ray microtomography |
topic |
Dental materials Dental prosthesis X-Ray microtomography |
description |
Zirconia-reinforced lithium silicate (ZLS) is a ceramic that promises to have better mechanical properties than other materials with the same indications as well as improved adaptation and fracture strength. Objective In this study, marginal and internal misfit and fracture load with and without thermal-mechanical aging (TMA) of monolithic ZLS and lithium disilicate (LDS) crowns were evaluated. Material and methods Crowns were milled using a computer-aided design/computer-aided manufacturing system. Marginal gaps (MGs), absolute marginal discrepancy (AMD), axial gaps, and occlusal gaps were measured by X-ray microtomography (n=8). For fracture load testing, crowns were cemented in a universal abutment, and divided into four groups: ZLS without TMA, ZLS with TMA, LDS without TMA, and LDS with TMA (n=10). TMA groups were subjected to 10,000 thermal cycles (5-55°C) and 1,000,000 mechanical cycles (200 N, 3.8 Hz). All groups were subjected to compressive strength testing in a universal testing machine at a crosshead speed of 1 mm/min until failure. Student’s t-test was used to examine misfit, two-way analysis of variance was used to analyze fracture load, and Pearson’s correlation coefficients for misfit and fracture load were calculated (α=0.05). The materials were analyzed according to Weibull distribution, with 95% confidence intervals. Results Average MG (p |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/134186 10.1590/1678-7757-2016-0233 |
url |
https://www.revistas.usp.br/jaos/article/view/134186 |
identifier_str_mv |
10.1590/1678-7757-2016-0233 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/134186/130027 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Journal of Applied Oral Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science; Vol. 25 No. 3 (2017); 282-289 Journal of Applied Oral Science; Vol. 25 Núm. 3 (2017); 282-289 Journal of Applied Oral Science; v. 25 n. 3 (2017); 282-289 1678-7765 1678-7757 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1800221680380936192 |