Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5373-MR-2017-0190 http://hdl.handle.net/11449/175335 |
Resumo: | To solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of cooling rate on the three-point flexural strength (FS), residual stress, Vickers hardness (VH) and V-notch fracture toughness (SEVNB) on a feldspathic porcelain (Vita VM9) indicated for covering zirconia. Bar-shaped specimens were sintered according manufacturer's schedule firing and cooled at different rates (slow, normal or fast). Specimens were tested for FS (n=30), VH (n=15) and SEVNB tests (n=15). Weibull analysis were performed from FS values to measure reliability and probability of failure (PF). One-way ANOVA was significant for VH (p<0.001), and Tukey's test showed that slow cooling led to higher values. There was no significant difference for FS (p=0.654) and SEVNB (p=0.734). Fast cooling led to the lowest PF, but cooling rate factor was not significant for Weibull modulus. All cooling group showed residual tensile stress (MPa): Slow = 34.81; Normal = 27.04; Fast = 18,98. It was concluded that cooling rate produce minor changes in the porcelain properties. |
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Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesisCoolingDental porcelainMaterial resistanceTo solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of cooling rate on the three-point flexural strength (FS), residual stress, Vickers hardness (VH) and V-notch fracture toughness (SEVNB) on a feldspathic porcelain (Vita VM9) indicated for covering zirconia. Bar-shaped specimens were sintered according manufacturer's schedule firing and cooled at different rates (slow, normal or fast). Specimens were tested for FS (n=30), VH (n=15) and SEVNB tests (n=15). Weibull analysis were performed from FS values to measure reliability and probability of failure (PF). One-way ANOVA was significant for VH (p<0.001), and Tukey's test showed that slow cooling led to higher values. There was no significant difference for FS (p=0.654) and SEVNB (p=0.734). Fast cooling led to the lowest PF, but cooling rate factor was not significant for Weibull modulus. All cooling group showed residual tensile stress (MPa): Slow = 34.81; Normal = 27.04; Fast = 18,98. It was concluded that cooling rate produce minor changes in the porcelain properties.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Materiais Odontológicos e Prótese Faculdade de Odontologia de Araraquara Universidade Estadual Paulista - UNESP, Rua Humaitá, 1680Departamento de Engenharia de Materiais Escola de Engenharia de Lorena Universidade de São Paulo - USP, Polo Urbo-industrial, Gleba AI-6Departamento de Engenharia de Materiais Faculdade de Tecnologia de Resende Universidade Estadual do Rio de Janeiro - UERJ, Rodovia Presidente Dutra, km 298 (sentido RJ-SP)Departamento de Materiais Odontológicos e Prótese Faculdade de Odontologia de Araraquara Universidade Estadual Paulista - UNESP, Rua Humaitá, 1680FAPESP: 2009/17735-8FAPESP: 2010/05469-9Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade do Estado do Rio de Janeiro (UERJ)De Almeida, Antonio Alves [UNESP]Longhini, Diogo [UNESP]Suzuki, Paulo AtsushiRibeiro, SebastiãoSantos, ClaudineiAdabo, Gelson Luis [UNESP]2018-12-11T17:15:21Z2018-12-11T17:15:21Z2017-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1418-1424application/pdfhttp://dx.doi.org/10.1590/1980-5373-MR-2017-0190Materials Research, v. 20, n. 5, p. 1418-1424, 2017.1516-1439http://hdl.handle.net/11449/17533510.1590/1980-5373-MR-2017-0190S1516-143920170005014182-s2.0-85031276854S1516-14392017000501418.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research0,398info:eu-repo/semantics/openAccess2023-11-27T06:09:59Zoai:repositorio.unesp.br:11449/175335Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:49:33.911770Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
title |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
spellingShingle |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis De Almeida, Antonio Alves [UNESP] Cooling Dental porcelain Material resistance |
title_short |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
title_full |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
title_fullStr |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
title_full_unstemmed |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
title_sort |
Effect of the cooling rate on the properties of veneer porcelain for zirconia dental prosthesis |
author |
De Almeida, Antonio Alves [UNESP] |
author_facet |
De Almeida, Antonio Alves [UNESP] Longhini, Diogo [UNESP] Suzuki, Paulo Atsushi Ribeiro, Sebastião Santos, Claudinei Adabo, Gelson Luis [UNESP] |
author_role |
author |
author2 |
Longhini, Diogo [UNESP] Suzuki, Paulo Atsushi Ribeiro, Sebastião Santos, Claudinei Adabo, Gelson Luis [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Universidade do Estado do Rio de Janeiro (UERJ) |
dc.contributor.author.fl_str_mv |
De Almeida, Antonio Alves [UNESP] Longhini, Diogo [UNESP] Suzuki, Paulo Atsushi Ribeiro, Sebastião Santos, Claudinei Adabo, Gelson Luis [UNESP] |
dc.subject.por.fl_str_mv |
Cooling Dental porcelain Material resistance |
topic |
Cooling Dental porcelain Material resistance |
description |
To solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of cooling rate on the three-point flexural strength (FS), residual stress, Vickers hardness (VH) and V-notch fracture toughness (SEVNB) on a feldspathic porcelain (Vita VM9) indicated for covering zirconia. Bar-shaped specimens were sintered according manufacturer's schedule firing and cooled at different rates (slow, normal or fast). Specimens were tested for FS (n=30), VH (n=15) and SEVNB tests (n=15). Weibull analysis were performed from FS values to measure reliability and probability of failure (PF). One-way ANOVA was significant for VH (p<0.001), and Tukey's test showed that slow cooling led to higher values. There was no significant difference for FS (p=0.654) and SEVNB (p=0.734). Fast cooling led to the lowest PF, but cooling rate factor was not significant for Weibull modulus. All cooling group showed residual tensile stress (MPa): Slow = 34.81; Normal = 27.04; Fast = 18,98. It was concluded that cooling rate produce minor changes in the porcelain properties. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 2018-12-11T17:15:21Z 2018-12-11T17:15:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1980-5373-MR-2017-0190 Materials Research, v. 20, n. 5, p. 1418-1424, 2017. 1516-1439 http://hdl.handle.net/11449/175335 10.1590/1980-5373-MR-2017-0190 S1516-14392017000501418 2-s2.0-85031276854 S1516-14392017000501418.pdf |
url |
http://dx.doi.org/10.1590/1980-5373-MR-2017-0190 http://hdl.handle.net/11449/175335 |
identifier_str_mv |
Materials Research, v. 20, n. 5, p. 1418-1424, 2017. 1516-1439 10.1590/1980-5373-MR-2017-0190 S1516-14392017000501418 2-s2.0-85031276854 S1516-14392017000501418.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research 0,398 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1418-1424 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128985672974336 |