Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian journal of oral sciences (Online) |
Texto Completo: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8648760 |
Resumo: | Aim: To study influence of the cooling rate after sintering a veneering porcelain (Vita VM9) on fracture toughness by indentation strength (IS) and single-edge-v-notched beam (SEVNB) methods. Methods: Vita VM9 bars were sintered according to the manufacturer’s recommendation and cooled under three conditions: Slow (inside the furnace from sintering temperature to room temperature); Normal (inside the furnace from sintering temperature to 500 ºC and outside the furnace from 500 ºC to room temperature); and Fast (outside the furnace from sintering temperature to room temperature). Fracture toughness was measured by IS (n=10) and SEVNB (n=10) methods. Data were analyzed by two-way ANOVA (α=0.05). Results: The fracture toughness obtained from SEVNB (slow - 1.02±0.10; normal - 1.09±0.13; and fast - 1,02±0.18 MPa.m1/2 cooling techniques) was significantly lower than IS (slow - 1.19±0.13; normal - 1.17±0.07; and fast - 1.16±0.06 MPa. m1/2 cooling techniques). There was no significant influence of the cooling technique (p=0.012). Conclusions: The measurement technique influenced the fracture toughness values . IS method overestimated the fracture toughness values. Irrespective of the measuring method, cooling rate did not influence the Vita VM9 veneering porcelain fracture toughness. |
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oai:ojs.periodicos.sbu.unicamp.br:article/8648760 |
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UNICAMP-8 |
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Brazilian journal of oral sciences (Online) |
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Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testingCeramics. Mechanical processes. Dental materials.Taxa de resfriamentoAim: To study influence of the cooling rate after sintering a veneering porcelain (Vita VM9) on fracture toughness by indentation strength (IS) and single-edge-v-notched beam (SEVNB) methods. Methods: Vita VM9 bars were sintered according to the manufacturer’s recommendation and cooled under three conditions: Slow (inside the furnace from sintering temperature to room temperature); Normal (inside the furnace from sintering temperature to 500 ºC and outside the furnace from 500 ºC to room temperature); and Fast (outside the furnace from sintering temperature to room temperature). Fracture toughness was measured by IS (n=10) and SEVNB (n=10) methods. Data were analyzed by two-way ANOVA (α=0.05). Results: The fracture toughness obtained from SEVNB (slow - 1.02±0.10; normal - 1.09±0.13; and fast - 1,02±0.18 MPa.m1/2 cooling techniques) was significantly lower than IS (slow - 1.19±0.13; normal - 1.17±0.07; and fast - 1.16±0.06 MPa. m1/2 cooling techniques). There was no significant influence of the cooling technique (p=0.012). Conclusions: The measurement technique influenced the fracture toughness values . IS method overestimated the fracture toughness values. Irrespective of the measuring method, cooling rate did not influence the Vita VM9 veneering porcelain fracture toughness.Universidade Estadual de Campinas2017-04-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/otherapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/864876010.20396/bjos.v15i2.8648760Brazilian Journal of Oral Sciences; v. 15 n. 2 (2016): Apr./Jun.; 109-112Brazilian Journal of Oral Sciences; Vol. 15 No. 2 (2016): Apr./Jun.; 109-1121677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8648760/15784Domingues, Natália BertoloGalvão, Beatriz RegaladoRibeiro, SebastiãoAlmeida Junior, Antonio Alves deLonghini, DiogoAdabo, Gelson Luísinfo:eu-repo/semantics/openAccess2018-04-03T11:18:06Zoai:ojs.periodicos.sbu.unicamp.br:article/8648760Revistahttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/PUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/oaibrjorals@fop.unicamp.br||brjorals@fop.unicamp.br1677-32251677-3217opendoar:2018-04-03T11:18:06Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
title |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
spellingShingle |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing Domingues, Natália Bertolo Ceramics. Mechanical processes. Dental materials. Taxa de resfriamento |
title_short |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
title_full |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
title_fullStr |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
title_full_unstemmed |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
title_sort |
Comparison of the indentation strength and single-edge-v-notched beam methods for dental ceramic fracture toughness testing |
author |
Domingues, Natália Bertolo |
author_facet |
Domingues, Natália Bertolo Galvão, Beatriz Regalado Ribeiro, Sebastião Almeida Junior, Antonio Alves de Longhini, Diogo Adabo, Gelson Luís |
author_role |
author |
author2 |
Galvão, Beatriz Regalado Ribeiro, Sebastião Almeida Junior, Antonio Alves de Longhini, Diogo Adabo, Gelson Luís |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Domingues, Natália Bertolo Galvão, Beatriz Regalado Ribeiro, Sebastião Almeida Junior, Antonio Alves de Longhini, Diogo Adabo, Gelson Luís |
dc.subject.por.fl_str_mv |
Ceramics. Mechanical processes. Dental materials. Taxa de resfriamento |
topic |
Ceramics. Mechanical processes. Dental materials. Taxa de resfriamento |
description |
Aim: To study influence of the cooling rate after sintering a veneering porcelain (Vita VM9) on fracture toughness by indentation strength (IS) and single-edge-v-notched beam (SEVNB) methods. Methods: Vita VM9 bars were sintered according to the manufacturer’s recommendation and cooled under three conditions: Slow (inside the furnace from sintering temperature to room temperature); Normal (inside the furnace from sintering temperature to 500 ºC and outside the furnace from 500 ºC to room temperature); and Fast (outside the furnace from sintering temperature to room temperature). Fracture toughness was measured by IS (n=10) and SEVNB (n=10) methods. Data were analyzed by two-way ANOVA (α=0.05). Results: The fracture toughness obtained from SEVNB (slow - 1.02±0.10; normal - 1.09±0.13; and fast - 1,02±0.18 MPa.m1/2 cooling techniques) was significantly lower than IS (slow - 1.19±0.13; normal - 1.17±0.07; and fast - 1.16±0.06 MPa. m1/2 cooling techniques). There was no significant influence of the cooling technique (p=0.012). Conclusions: The measurement technique influenced the fracture toughness values . IS method overestimated the fracture toughness values. Irrespective of the measuring method, cooling rate did not influence the Vita VM9 veneering porcelain fracture toughness. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-04-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/other |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8648760 10.20396/bjos.v15i2.8648760 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8648760 |
identifier_str_mv |
10.20396/bjos.v15i2.8648760 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8648760/15784 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
dc.source.none.fl_str_mv |
Brazilian Journal of Oral Sciences; v. 15 n. 2 (2016): Apr./Jun.; 109-112 Brazilian Journal of Oral Sciences; Vol. 15 No. 2 (2016): Apr./Jun.; 109-112 1677-3225 reponame:Brazilian journal of oral sciences (Online) instname:Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
instname_str |
Universidade Estadual de Campinas (UNICAMP) |
instacron_str |
UNICAMP |
institution |
UNICAMP |
reponame_str |
Brazilian journal of oral sciences (Online) |
collection |
Brazilian journal of oral sciences (Online) |
repository.name.fl_str_mv |
Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP) |
repository.mail.fl_str_mv |
brjorals@fop.unicamp.br||brjorals@fop.unicamp.br |
_version_ |
1788167622979747840 |