Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushing
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1807-2577.1049 http://hdl.handle.net/11449/126144 |
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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Surface roughness and hardness of yttria stabilized zirconia (Y-TZP) after 10 years of simulated brushingAvaliação da rugosidade e dureza da zircônia Y-TZP após simulação de 10 anos de escovaçãoHardnessToothbrushingCeramicsDurezaEscovação dentáriaCerâmicaIntroduction: 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.Introdução: A zircônia estabilizada por ítria (Y-TZP) utilizada para infraestruturas protéticas pode, em algumas situações clínicas, ficar exposta ao meio bucal, e nessas situações, uma superfície sem alterações e polida é extremamente importante. Objetivo: Assim, este estudo avaliou a rugosidade média (Ra) e a dureza Vickers da zircônia Lava™ após simulação de dez anos de escovação. Material e método: Foram confeccionados 36 espécimes (20mm X 4mm X 1,2mm), divididos em três grupos: armazenamento em água destilada (AD, n=12, controle), escovação com água destilada (EAD, n=12) e escovação com água destilada e dentifrício fluoretado (EDF, n=12). A escovação foi realizada em máquina de escovação simulando 10 anos (878.400 ciclos, lOOgf) com escova dental macia. A rugosidade média (Ra, em μm) e a dureza Vickers (VHN) de todos os corpos-de-prova foram mensuradas em dois momentos: antes e após o tratamento experimental, em rugosímetro e microdurômetro (500gf, 30 segundos), respectivamente. Os dados foram analisados por meio do teste two-way ANOVA (α=0,05). Resultado: A interação entre os grupos não foi significativa tanto para a rugosidade (p=0,701) quanto para a dureza (p=0,928), sendo as médias finais de Ra (μm) iguais a: AD - 0,63; EAD - 0,64 e EDF - 0,68 e as de dureza Vickers (VHN) iguais a: AD - 1301,16; EAD - 1316,60 e EDF - 1299,58. Conclusão: Concluiu-se que o procedimento de escovação com água destilada ou com dentifrício fluoretado não foi capaz de alterar a rugosidade e a dureza da zircônia Y-TZP utilizada neste estudo.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNESP - Univ Estadual PaulistaUNESP - Univ Estadual PaulistaUniversidade Estadual Paulista Júlio de Mesquita FilhoUniversidade Estadual Paulista (Unesp)Candido, Lucas Miguel [UNESP]Fais, Laiza Maria Grassi [UNESP]Reis, José Mauricio dos Santos Nunes [UNESP]Pinelli, Ligia Antunes Pereira [UNESP]2015-08-06T16:14:35Z2015-08-06T16:14:35Z2014-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article379-383application/pdfhttp://dx.doi.org/10.1590/1807-2577.1049Revista de Odontologia da UNESP. Universidade Estadual Paulista Júlio de Mesquita Filho, v. 43, n. 6, p. 379-383, 2014.1807-2577http://hdl.handle.net/11449/12614410.1590/1807-2577.1049S1807-25772014000600379S1807-25772014000600379.pdf0455968557454133SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista de Odontologia da UNESPinfo:eu-repo/semantics/openAccess2023-12-19T06:21:09Zoai:repositorio.unesp.br:11449/126144Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-19T06:21:09Repositório Institucional 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 Avaliação da rugosidade e dureza da zircônia Y-TZP após simulação de 10 anos de escovação |
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 [UNESP] Hardness Toothbrushing Ceramics Dureza Escovação dentária Cerâmica |
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 [UNESP] |
author_facet |
Candido, Lucas Miguel [UNESP] Fais, Laiza Maria Grassi [UNESP] Reis, José Mauricio dos Santos Nunes [UNESP] Pinelli, Ligia Antunes Pereira [UNESP] |
author_role |
author |
author2 |
Fais, Laiza Maria Grassi [UNESP] Reis, José Mauricio dos Santos Nunes [UNESP] Pinelli, Ligia Antunes Pereira [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Candido, Lucas Miguel [UNESP] Fais, Laiza Maria Grassi [UNESP] Reis, José Mauricio dos Santos Nunes [UNESP] Pinelli, Ligia Antunes Pereira [UNESP] |
dc.subject.por.fl_str_mv |
Hardness Toothbrushing Ceramics Dureza Escovação dentária Cerâmica |
topic |
Hardness Toothbrushing Ceramics Dureza Escovação dentária Cerâmica |
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 2015-08-06T16:14:35Z 2015-08-06T16:14:35Z |
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/10.1590/1807-2577.1049 Revista de Odontologia da UNESP. Universidade Estadual Paulista Júlio de Mesquita Filho, v. 43, n. 6, p. 379-383, 2014. 1807-2577 http://hdl.handle.net/11449/126144 10.1590/1807-2577.1049 S1807-25772014000600379 S1807-25772014000600379.pdf 0455968557454133 |
url |
http://dx.doi.org/10.1590/1807-2577.1049 http://hdl.handle.net/11449/126144 |
identifier_str_mv |
Revista de Odontologia da UNESP. Universidade Estadual Paulista Júlio de Mesquita Filho, v. 43, n. 6, p. 379-383, 2014. 1807-2577 10.1590/1807-2577.1049 S1807-25772014000600379 S1807-25772014000600379.pdf 0455968557454133 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista de Odontologia da UNESP |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
379-383 application/pdf |
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 |
SciELO 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_ |
1799965336041160704 |