Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
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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UNICAMP-8 |
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Brazilian journal of oral sciences (Online) |
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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 |
_version_ |
1800216398124810240 |