Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing

Detalhes bibliográficos
Autor(a) principal: Candido,Lucas Miguel
Data de Publicação: 2014
Outros Autores: Fais,Laiza Maria Grassi, Reis,José Mauricio dos Santos Nunes, Pinelli,Ligia Antunes Pereira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista de Odontologia da UNESP
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772014000600379
Resumo: Introduction:The Y-TZP zirconia used for prosthetic infrastructure, in some clinical situations, can be exposed to the oral environment. In these situations, a polished surface without changes is extremely important.Objective:The aim of this study was to evaluate the mean roughness (Ra) and Vickers hardness of Y-TZP zirconia (Lava™) after simulating ten years of brushing.Material and method:Thirty-six Y-TZP bar-shaped specimens (20mm X 4mm X 1.2mm) were divided into three groups: storage in distilled water (DW, n=12, control); brushing with distilled water (BDW, n=12) and brushing with distilled water and fluoride toothpaste (BFT, n=12). Brushing was performed using a brushing machine with a soft-bristled toothbrush, simulating 10 years of brushing (878.400 cycles, 100gf). The mean roughness (Ra in μm) and Vickers hardness (VHN) of all specimens were measured twice: before and after the experimental treatment, in profilometer and microhardness tester (500gf, 30 seconds), respectively. Data were analyzed using the two-way ANOVA test (α = 0.05).Result:The interaction between groups was not significant for roughness (p = 0.701) nor for hardness (p = 0.928). The final averages for Ra (μm) were equal to: DW - 0.63; BDW - 0.64; and, BFT - 0.68. The final averages for Vickers hardness (VHN) were: DW - 1301.16; BDW - 1316.60; and, BFT - 1299.58.Conclusion:It was concluded that the brushing with distilled or fluoridated toothpaste was not able to change the roughness and hardness of Y-TZP zirconia used in this study.
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spelling Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushingHardnesstoothbrushingceramicsIntroduction:The Y-TZP zirconia used for prosthetic infrastructure, in some clinical situations, can be exposed to the oral environment. In these situations, a polished surface without changes is extremely important.Objective:The aim of this study was to evaluate the mean roughness (Ra) and Vickers hardness of Y-TZP zirconia (Lava™) after simulating ten years of brushing.Material and method:Thirty-six Y-TZP bar-shaped specimens (20mm X 4mm X 1.2mm) were divided into three groups: storage in distilled water (DW, n=12, control); brushing with distilled water (BDW, n=12) and brushing with distilled water and fluoride toothpaste (BFT, n=12). Brushing was performed using a brushing machine with a soft-bristled toothbrush, simulating 10 years of brushing (878.400 cycles, 100gf). The mean roughness (Ra in μm) and Vickers hardness (VHN) of all specimens were measured twice: before and after the experimental treatment, in profilometer and microhardness tester (500gf, 30 seconds), respectively. Data were analyzed using the two-way ANOVA test (α = 0.05).Result:The interaction between groups was not significant for roughness (p = 0.701) nor for hardness (p = 0.928). The final averages for Ra (μm) were equal to: DW - 0.63; BDW - 0.64; and, BFT - 0.68. The final averages for Vickers hardness (VHN) were: DW - 1301.16; BDW - 1316.60; and, BFT - 1299.58.Conclusion:It was concluded that the brushing with distilled or fluoridated toothpaste was not able to change the roughness and hardness of Y-TZP zirconia used in this study.Universidade Estadual Paulista Júlio de Mesquita Filho2014-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772014000600379Revista de Odontologia da UNESP v.43 n.6 2014reponame:Revista de Odontologia da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESP10.1590/1807-2577.1049info:eu-repo/semantics/openAccessCandido,Lucas MiguelFais,Laiza Maria GrassiReis,José Mauricio dos Santos NunesPinelli,Ligia Antunes Pereiraeng2015-09-24T00:00:00Zoai:scielo:S1807-25772014000600379Revistahttps://www.revodontolunesp.com.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||adriana@foar.unesp.br1807-25770101-1774opendoar:2015-09-24T00:00Revista de Odontologia da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
title Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
spellingShingle Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
Candido,Lucas Miguel
Hardness
toothbrushing
ceramics
title_short Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
title_full Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
title_fullStr Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
title_full_unstemmed Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
title_sort Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
author Candido,Lucas Miguel
author_facet Candido,Lucas Miguel
Fais,Laiza Maria Grassi
Reis,José Mauricio dos Santos Nunes
Pinelli,Ligia Antunes Pereira
author_role author
author2 Fais,Laiza Maria Grassi
Reis,José Mauricio dos Santos Nunes
Pinelli,Ligia Antunes Pereira
author2_role author
author
author
dc.contributor.author.fl_str_mv Candido,Lucas Miguel
Fais,Laiza Maria Grassi
Reis,José Mauricio dos Santos Nunes
Pinelli,Ligia Antunes Pereira
dc.subject.por.fl_str_mv Hardness
toothbrushing
ceramics
topic Hardness
toothbrushing
ceramics
description Introduction:The Y-TZP zirconia used for prosthetic infrastructure, in some clinical situations, can be exposed to the oral environment. In these situations, a polished surface without changes is extremely important.Objective:The aim of this study was to evaluate the mean roughness (Ra) and Vickers hardness of Y-TZP zirconia (Lava™) after simulating ten years of brushing.Material and method:Thirty-six Y-TZP bar-shaped specimens (20mm X 4mm X 1.2mm) were divided into three groups: storage in distilled water (DW, n=12, control); brushing with distilled water (BDW, n=12) and brushing with distilled water and fluoride toothpaste (BFT, n=12). Brushing was performed using a brushing machine with a soft-bristled toothbrush, simulating 10 years of brushing (878.400 cycles, 100gf). The mean roughness (Ra in μm) and Vickers hardness (VHN) of all specimens were measured twice: before and after the experimental treatment, in profilometer and microhardness tester (500gf, 30 seconds), respectively. Data were analyzed using the two-way ANOVA test (α = 0.05).Result:The interaction between groups was not significant for roughness (p = 0.701) nor for hardness (p = 0.928). The final averages for Ra (μm) were equal to: DW - 0.63; BDW - 0.64; and, BFT - 0.68. The final averages for Vickers hardness (VHN) were: DW - 1301.16; BDW - 1316.60; and, BFT - 1299.58.Conclusion:It was concluded that the brushing with distilled or fluoridated toothpaste was not able to change the roughness and hardness of Y-TZP zirconia used in this study.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772014000600379
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-25772014000600379
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1807-2577.1049
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Estadual Paulista Júlio de Mesquita Filho
publisher.none.fl_str_mv Universidade Estadual Paulista Júlio de Mesquita Filho
dc.source.none.fl_str_mv Revista de Odontologia da UNESP v.43 n.6 2014
reponame:Revista de Odontologia da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Revista de Odontologia da UNESP
collection Revista de Odontologia da UNESP
repository.name.fl_str_mv Revista de Odontologia da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv ||adriana@foar.unesp.br
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