Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods

Detalhes bibliográficos
Autor(a) principal: Almeida-Júnior, Antonio Alves de
Data de Publicação: 2015
Outros Autores: Longhini, Diogo, Galvão, Beatriz Regalado, Santos, Claudinei dos, Adabo, Gelson Luis
Tipo de documento: Artigo
Idioma: por
Título da fonte: Brazilian journal of oral sciences (Online)
Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908
Resumo: Aim: To investigate the effect of the cooling rate on flexural strength of monolayer and bilayer porcelain/zirconia (Y-TZP) bars. Methods: Forty-five specimens were made for each design group: (PM) monolithic specimens of veneer porcelain Vita VM9 (Vita, Germany); (ZM) monolithic specimens of zirconia (ZiHP; ProtMat, Brazil); (PB) bilayer specimens zirconia/porcelain with porcelain on lower surface; and (ZB) bilayer specimens porcelain/zirconia with zirconia on lower surface. Each group was cooled by three different methods after porcelain sintering: slow – specimens were cooled inside the turned-off furnace; normal – specimens were removed from the furnace and cooled in air at room temperature; and fast – specimens were removed from the furnace at 910°C and cooled by compressed air for 10 s. Specimens were polished and flexural strength was measured in water at 37 °C (n=15). Maximum load at fracture was recorded, and equations for simple (monolayer) and composite (bilayer) structures were used to calculate the flexural strength. Results were analyzed using one-way ANOVA (p<0.05) and Tukey test separately for each design. Results: The results of one-way ANOVA were statistically significant only for the PB group. The post-hoc Tukey test showed the highest flexural strength for fast cooling and the lowest for slow cooling; the normal cooling was statistically similar to both. Conclusions: Cooling methods affected only the flexural strength of bilayer specimens with porcelain on low surface (under tension) when the slow cooling method was used.
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spelling Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methodsDental porcelainZirconiumMaterial resistanceOdontologiaAim: To investigate the effect of the cooling rate on flexural strength of monolayer and bilayer porcelain/zirconia (Y-TZP) bars. Methods: Forty-five specimens were made for each design group: (PM) monolithic specimens of veneer porcelain Vita VM9 (Vita, Germany); (ZM) monolithic specimens of zirconia (ZiHP; ProtMat, Brazil); (PB) bilayer specimens zirconia/porcelain with porcelain on lower surface; and (ZB) bilayer specimens porcelain/zirconia with zirconia on lower surface. Each group was cooled by three different methods after porcelain sintering: slow – specimens were cooled inside the turned-off furnace; normal – specimens were removed from the furnace and cooled in air at room temperature; and fast – specimens were removed from the furnace at 910°C and cooled by compressed air for 10 s. Specimens were polished and flexural strength was measured in water at 37 °C (n=15). Maximum load at fracture was recorded, and equations for simple (monolayer) and composite (bilayer) structures were used to calculate the flexural strength. Results were analyzed using one-way ANOVA (p<0.05) and Tukey test separately for each design. Results: The results of one-way ANOVA were statistically significant only for the PB group. The post-hoc Tukey test showed the highest flexural strength for fast cooling and the lowest for slow cooling; the normal cooling was statistically similar to both. Conclusions: Cooling methods affected only the flexural strength of bilayer specimens with porcelain on low surface (under tension) when the slow cooling method was used.Universidade Estadual de Campinas2015-10-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908Brazilian Journal of Oral Sciences; v. 13 n. 2 (2014): Apr./Jun.; 124-128Brazilian Journal of Oral Sciences; Vol. 13 No. 2 (2014): Apr./Jun.; 124-1281677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPporhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908/8445Copyright (c) 2015 Antonio Alves de Almeida-Júnior, Diogo Longhini, Beatriz Regalado Galvão, Claudinei dos Santos, Gelson Luis Adabohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAlmeida-Júnior, Antonio Alves deLonghini, DiogoGalvão, Beatriz RegaladoSantos, Claudinei dosAdabo, Gelson Luis2023-10-02T11:13:07Zoai:ojs.periodicos.sbu.unicamp.br:article/8640908Revistahttps://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:2023-10-02T11:13:07Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false
dc.title.none.fl_str_mv Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
title Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
spellingShingle Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
Almeida-Júnior, Antonio Alves de
Dental porcelain
Zirconium
Material resistance
Odontologia
title_short Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
title_full Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
title_fullStr Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
title_full_unstemmed Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
title_sort Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
author Almeida-Júnior, Antonio Alves de
author_facet Almeida-Júnior, Antonio Alves de
Longhini, Diogo
Galvão, Beatriz Regalado
Santos, Claudinei dos
Adabo, Gelson Luis
author_role author
author2 Longhini, Diogo
Galvão, Beatriz Regalado
Santos, Claudinei dos
Adabo, Gelson Luis
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Almeida-Júnior, Antonio Alves de
Longhini, Diogo
Galvão, Beatriz Regalado
Santos, Claudinei dos
Adabo, Gelson Luis
dc.subject.por.fl_str_mv Dental porcelain
Zirconium
Material resistance
Odontologia
topic Dental porcelain
Zirconium
Material resistance
Odontologia
description Aim: To investigate the effect of the cooling rate on flexural strength of monolayer and bilayer porcelain/zirconia (Y-TZP) bars. Methods: Forty-five specimens were made for each design group: (PM) monolithic specimens of veneer porcelain Vita VM9 (Vita, Germany); (ZM) monolithic specimens of zirconia (ZiHP; ProtMat, Brazil); (PB) bilayer specimens zirconia/porcelain with porcelain on lower surface; and (ZB) bilayer specimens porcelain/zirconia with zirconia on lower surface. Each group was cooled by three different methods after porcelain sintering: slow – specimens were cooled inside the turned-off furnace; normal – specimens were removed from the furnace and cooled in air at room temperature; and fast – specimens were removed from the furnace at 910°C and cooled by compressed air for 10 s. Specimens were polished and flexural strength was measured in water at 37 °C (n=15). Maximum load at fracture was recorded, and equations for simple (monolayer) and composite (bilayer) structures were used to calculate the flexural strength. Results were analyzed using one-way ANOVA (p<0.05) and Tukey test separately for each design. Results: The results of one-way ANOVA were statistically significant only for the PB group. The post-hoc Tukey test showed the highest flexural strength for fast cooling and the lowest for slow cooling; the normal cooling was statistically similar to both. Conclusions: Cooling methods affected only the flexural strength of bilayer specimens with porcelain on low surface (under tension) when the slow cooling method was used.
publishDate 2015
dc.date.none.fl_str_mv 2015-10-07
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://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908
url https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640908/8445
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
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. 13 n. 2 (2014): Apr./Jun.; 124-128
Brazilian Journal of Oral Sciences; Vol. 13 No. 2 (2014): Apr./Jun.; 124-128
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
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