Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP
Ano de defesa: | 2018 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências da Saúde |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciências Odontológicas
|
Departamento: |
Odontologia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/15444 |
Resumo: | This study is formatted into two parts: the aim of the first study was to evaluate a new approach (Sol-gel approach) to obtain an alternative material for air-abrasion (silica-coated with different concentrations aluminum oxide) on the bond strength with and without long-term aging between resin cement and a Y-TZP ceramic, considering different silica concentrations. Y-TZP ceramic specimens (7 × 6.3 × 2 mm3) were made and embedded in PVC molds using chemically activated acrylic resin. The specimens were allocated into 8 groups (n = 20) considering two factors: surface treatment (SiC: silica-coated aluminum oxide particles; AlOx: aluminum oxide particles; 7%Si: experimental material of silica-coated aluminum oxide particles (composed of 93% alumina and 7% silica); 20%Si experimental material of silica-coated aluminum oxide particles (composed of 80% alumina and 20% silica)) and aging (baseline: 24 hours at 37°C in a steam chamber; or aging with 90 days in a steam chamber + 12,000 cycles, 5-55ºC). The air-abrasion was executed for 10 sec at 1 cm distance from the devices tip with oscillatory movements at a pressure of 2.8 bar. The silane coupling agent Monobond Plus was applied on the ceramic surface and resin composite cylinders were made and cemented with Multilink Automix on Y-TZP ceramic and light cured. The shear test was performed using a wire loop (Ø = 0.5 mm). In baseline condition all groups presented similar bond strength values. After aging, the groups SiC and 7%Si remained similar to their counterpart baseline groups, while the groups AlOx and 20% presented a decrease on the bond strength values. A great amount of silica concentration of 20% was not capable to promote stable adhesion to resin cement after aging and it was similar to the AlOx group. However, 7%Si and SiC groups were similar and presented a better performance after aging. The second study evaluated the effect of the alternative material for air-abrasion on the superficial characteristics (topography and roughness), structural stability (t-m phase transformation) and fatigue performance (biaxial flexure fatigue strength) of Y-TZP ceramic, considering two different silica concentrations. Disc-shaped specimens were manufactured according to ISO 6872:2015 and allocated into 4 groups (n = 30) according to the surface treatment: SiC; AlOx; 7%Si; 20%Si. The air-abrasion was executed following the same protocol previously descripted on study 1. The biaxial flexural fatigue strength test was performed using the staircase method. The 7%Si group presented the highest fatigue strength values and it was similar to the SiC group, while the 20%Si group presented the worst fatigue behavior and it was similar to the AlOx group. The increase on silica-coating concentration did not promoted a gentle air-abrasion protocol, and 7%Si group promoted a higher fatigue performance compared to 20%Si. |
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Manancial - Repositório Digital da UFSM |
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2019-01-24T10:05:16Z2019-01-24T10:05:16Z2018-07-20http://repositorio.ufsm.br/handle/1/15444This study is formatted into two parts: the aim of the first study was to evaluate a new approach (Sol-gel approach) to obtain an alternative material for air-abrasion (silica-coated with different concentrations aluminum oxide) on the bond strength with and without long-term aging between resin cement and a Y-TZP ceramic, considering different silica concentrations. Y-TZP ceramic specimens (7 × 6.3 × 2 mm3) were made and embedded in PVC molds using chemically activated acrylic resin. The specimens were allocated into 8 groups (n = 20) considering two factors: surface treatment (SiC: silica-coated aluminum oxide particles; AlOx: aluminum oxide particles; 7%Si: experimental material of silica-coated aluminum oxide particles (composed of 93% alumina and 7% silica); 20%Si experimental material of silica-coated aluminum oxide particles (composed of 80% alumina and 20% silica)) and aging (baseline: 24 hours at 37°C in a steam chamber; or aging with 90 days in a steam chamber + 12,000 cycles, 5-55ºC). The air-abrasion was executed for 10 sec at 1 cm distance from the devices tip with oscillatory movements at a pressure of 2.8 bar. The silane coupling agent Monobond Plus was applied on the ceramic surface and resin composite cylinders were made and cemented with Multilink Automix on Y-TZP ceramic and light cured. The shear test was performed using a wire loop (Ø = 0.5 mm). In baseline condition all groups presented similar bond strength values. After aging, the groups SiC and 7%Si remained similar to their counterpart baseline groups, while the groups AlOx and 20% presented a decrease on the bond strength values. A great amount of silica concentration of 20% was not capable to promote stable adhesion to resin cement after aging and it was similar to the AlOx group. However, 7%Si and SiC groups were similar and presented a better performance after aging. The second study evaluated the effect of the alternative material for air-abrasion on the superficial characteristics (topography and roughness), structural stability (t-m phase transformation) and fatigue performance (biaxial flexure fatigue strength) of Y-TZP ceramic, considering two different silica concentrations. Disc-shaped specimens were manufactured according to ISO 6872:2015 and allocated into 4 groups (n = 30) according to the surface treatment: SiC; AlOx; 7%Si; 20%Si. The air-abrasion was executed following the same protocol previously descripted on study 1. The biaxial flexural fatigue strength test was performed using the staircase method. The 7%Si group presented the highest fatigue strength values and it was similar to the SiC group, while the 20%Si group presented the worst fatigue behavior and it was similar to the AlOx group. The increase on silica-coating concentration did not promoted a gentle air-abrasion protocol, and 7%Si group promoted a higher fatigue performance compared to 20%Si.Este trabalho está formatado em dois estudos: o objetivo do estudo 1 foi avaliar uma nova abordagem (método Sol-gel) para obtenção de um material alternativo para jateamento (óxido de alumínio revestido por diferentes concentrações de sílica) na resistência de união com e sem envelhecimento entre uma cerâmica Y-TZP e cimento resinoso, considerando diferentes concentrações de sílica. Espécimes de cerâmica Y-TZP (7 × 6.3 × 2 mm3) foram confeccionados e embutidos em moldes de PVC com resina acrílica autopolimerizável. Os espécimes foram alocados em 8 grupos (n=20) considerando dois fatores: tratamento de superfície (SiC: partículas de óxido de alumínio revestidas por sílica; AlOx: partículas de óxido de alumínio; 7%Si: material experimental de partículas de óxido de alumínio revestidas por sílica (composto por 93% alumina e 7% sílica); 20%Si: material experimental de partículas de óxido de alumínio revestidas por sílica (composto por 80% alumina e 20% sílica)) e envelhecimento (baseline: 24 horas em estufa a 37°C; ou envelhecido: 90 dias em estufa + 12,000 ciclos, 5-55ºC). O jateamento foi executado com movimentos oscilatórios por 10 segundos a 1 cm de distânica e pressão de 2.8 bar. O silano Monobond Plus foi aplicado na superfície da cerâmica e cilindros de resina composta foram confeccionados e cimentados com Multilink Automix na superfície da Y-TZP e fotopolimerizados. O teste de cisalhamento foi realizado com fio (Ø= 0,5 mm). Na condição baseline todos os grupos apresentaram valores similares de resistência de união. Após envelhecimento, os grupos SiC e 7%Si permaneceram similares aos seus respectivos grupos na condição baseline, enquanto os grupos AlOx e 20%Si apresentaram redução nos valores de resistência de união. O aumento na concentração de sílica de 20% não foi capaz de estabilizar a adesão ao cimento resinoso após envelhecimento e foi similar ao grupo AlOx, entretanto os grupos 7%Si e SiC foram similares e apresentaram melhor desempenho após envelhecimento. O estudo 2 avaliou o efeito do material alternativo para jateamento nas características de superfície (análise topográfica e rugosidade), estabilidade estrutural (transformação de fase t→m) e comportamento à fadiga (resistência à flexão biaxial) da cerâmica Y-TZP, considerando duas diferentes concentrações de sílica. Discos de cerâmica Y-TZP foram confeccionados conforme a norma ISO 6872:2015 e alocados em 4 grupos (n=30) de acordo com o tratamento de superfície: SiC; AlOx; 7%Si; 20%Si. Os espécimes foram jateados segundo mesmo protocolo descrito para o estudo 1 e o teste de resistência a flexão biaxial foi realizado em fadiga utilizando o método de escada (staircase). O grupo 7%Si apresentou os maiores valores de resistência à fadiga e foi similar ao grupo SiC, enquanto o grupo 20%Si apresentou o pior comportamento a fadiga e foi similar ao grupo AlOx. O aumento na concentração de sílica não promoveu um protocolo mais suave de jateamento, sendo que o grupo 7%Si promoveu um melhor desempenho à fadiga em comparação ao 20%Si.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências da SaúdePrograma de Pós-Graduação em Ciências OdontológicasUFSMBrasilOdontologiaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessConcentração de sílicaFadigaResistência à flexãoResistência de uniãoTratamento de superfícieZircônia policristalina parcialmente estabilizada por óxido de ítrioBond strengthFatigueFlexural strengthSilica concentrationSurface treatmentZirconium oxide partially stabilized by yttriumCNPQ::CIENCIAS DA SAUDE::ODONTOLOGIAEfeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZPEffect of air-abrasion with a new silica-coated alumina based material of different concentrations on the adhesion and mechanical properties of Y-TZPinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisValandro, Luiz Felipehttp://lattes.cnpq.br/0535309012233484Pereira, Gabriel Kalil Rochahttp://lattes.cnpq.br/9359419479985637Venturini, Andressa Borinhttp://lattes.cnpq.br/6047481428080936Fraga, Sarahttp://lattes.cnpq.br/8179821009699942http://lattes.cnpq.br/1967607431706056Rodrigues, Ana Carolina Cadore400200000000600381d00c6-91f3-43f9-b2ff-a634b10ed95d46a83279-262c-4543-beec-ae0672e635c29c649871-7152-4590-a2f3-69e9e97fac029486ec21-d324-45a2-9ca0-8029f6f24ac700fbe1ea-32d8-4e42-8c41-7adf308624efreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
dc.title.alternative.eng.fl_str_mv |
Effect of air-abrasion with a new silica-coated alumina based material of different concentrations on the adhesion and mechanical properties of Y-TZP |
title |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
spellingShingle |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP Rodrigues, Ana Carolina Cadore Concentração de sílica Fadiga Resistência à flexão Resistência de união Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio Bond strength Fatigue Flexural strength Silica concentration Surface treatment Zirconium oxide partially stabilized by yttrium CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
title_short |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
title_full |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
title_fullStr |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
title_full_unstemmed |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
title_sort |
Efeito do jateamento com um novo material a base de alumina revestido por diferentes concentrações de silica na adesão e nas propriedades mecânicas da Y-TZP |
author |
Rodrigues, Ana Carolina Cadore |
author_facet |
Rodrigues, Ana Carolina Cadore |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Valandro, Luiz Felipe |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0535309012233484 |
dc.contributor.advisor-co1.fl_str_mv |
Pereira, Gabriel Kalil Rocha |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/9359419479985637 |
dc.contributor.referee1.fl_str_mv |
Venturini, Andressa Borin |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6047481428080936 |
dc.contributor.referee2.fl_str_mv |
Fraga, Sara |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/8179821009699942 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1967607431706056 |
dc.contributor.author.fl_str_mv |
Rodrigues, Ana Carolina Cadore |
contributor_str_mv |
Valandro, Luiz Felipe Pereira, Gabriel Kalil Rocha Venturini, Andressa Borin Fraga, Sara |
dc.subject.por.fl_str_mv |
Concentração de sílica Fadiga Resistência à flexão Resistência de união Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio |
topic |
Concentração de sílica Fadiga Resistência à flexão Resistência de união Tratamento de superfície Zircônia policristalina parcialmente estabilizada por óxido de ítrio Bond strength Fatigue Flexural strength Silica concentration Surface treatment Zirconium oxide partially stabilized by yttrium CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
dc.subject.eng.fl_str_mv |
Bond strength Fatigue Flexural strength Silica concentration Surface treatment Zirconium oxide partially stabilized by yttrium |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA |
description |
This study is formatted into two parts: the aim of the first study was to evaluate a new approach (Sol-gel approach) to obtain an alternative material for air-abrasion (silica-coated with different concentrations aluminum oxide) on the bond strength with and without long-term aging between resin cement and a Y-TZP ceramic, considering different silica concentrations. Y-TZP ceramic specimens (7 × 6.3 × 2 mm3) were made and embedded in PVC molds using chemically activated acrylic resin. The specimens were allocated into 8 groups (n = 20) considering two factors: surface treatment (SiC: silica-coated aluminum oxide particles; AlOx: aluminum oxide particles; 7%Si: experimental material of silica-coated aluminum oxide particles (composed of 93% alumina and 7% silica); 20%Si experimental material of silica-coated aluminum oxide particles (composed of 80% alumina and 20% silica)) and aging (baseline: 24 hours at 37°C in a steam chamber; or aging with 90 days in a steam chamber + 12,000 cycles, 5-55ºC). The air-abrasion was executed for 10 sec at 1 cm distance from the devices tip with oscillatory movements at a pressure of 2.8 bar. The silane coupling agent Monobond Plus was applied on the ceramic surface and resin composite cylinders were made and cemented with Multilink Automix on Y-TZP ceramic and light cured. The shear test was performed using a wire loop (Ø = 0.5 mm). In baseline condition all groups presented similar bond strength values. After aging, the groups SiC and 7%Si remained similar to their counterpart baseline groups, while the groups AlOx and 20% presented a decrease on the bond strength values. A great amount of silica concentration of 20% was not capable to promote stable adhesion to resin cement after aging and it was similar to the AlOx group. However, 7%Si and SiC groups were similar and presented a better performance after aging. The second study evaluated the effect of the alternative material for air-abrasion on the superficial characteristics (topography and roughness), structural stability (t-m phase transformation) and fatigue performance (biaxial flexure fatigue strength) of Y-TZP ceramic, considering two different silica concentrations. Disc-shaped specimens were manufactured according to ISO 6872:2015 and allocated into 4 groups (n = 30) according to the surface treatment: SiC; AlOx; 7%Si; 20%Si. The air-abrasion was executed following the same protocol previously descripted on study 1. The biaxial flexural fatigue strength test was performed using the staircase method. The 7%Si group presented the highest fatigue strength values and it was similar to the SiC group, while the 20%Si group presented the worst fatigue behavior and it was similar to the AlOx group. The increase on silica-coating concentration did not promoted a gentle air-abrasion protocol, and 7%Si group promoted a higher fatigue performance compared to 20%Si. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-07-20 |
dc.date.accessioned.fl_str_mv |
2019-01-24T10:05:16Z |
dc.date.available.fl_str_mv |
2019-01-24T10:05:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/15444 |
url |
http://repositorio.ufsm.br/handle/1/15444 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
400200000000 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
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Universidade Federal de Santa Maria Centro de Ciências da Saúde |
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Programa de Pós-Graduação em Ciências Odontológicas |
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UFSM |
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Brasil |
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Odontologia |
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Universidade Federal de Santa Maria Centro de Ciências da Saúde |
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