Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana

Detalhes bibliográficos
Autor(a) principal: Anami, Lilian Costa [UNESP]
Data de Publicação: 2015
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/127911
http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/31-08-2015/000844478.pdf
Resumo: The aim of this study was to investigate the influence of different treatments of the inner surface of crowns and different luting agents on the survival of crowns made of zirconia partially stabilized by yttrium oxide (YTZP) and porcelain. A first study was performed using finite element analysis, where we compared the values and the distribution of Maximum Principal Stresses (MPS) of flat and anatomical specimens, with variations in the anatomy of ceramic components (crowns composed of Y-TZP and porcelain, with and without contact point, with and without a modified design of Y-TZP supporting the porcelain). The geometries produced in CAD software (Computer-Aided-Design) were imported for a finite element analysis software. A punctual and vertical load of 200 N was carried out on the central node of the models. The MPS distribution was quite similar among the studied models with important stress concentration in the singularity zone. Considering the lack of standardization in the preparation of anatomical specimens for laboratory tests, the choice of the simplified model (flat) could be justified. In a second step, 90 flat preparations were machined in epoxy resin and received crowns with Y-TZP infrastructure made by CAD/CAM system and veneered with porcelain by the stratified technique. Six conditions were tested (n=15): for crowns cemented with Panavia F, four different treatments were evaluated (cleaning with isopropyl alcohol [PC], overglaze application [POG], sandblasting with 125 μm particles of Al2O3 [POA]; sandblasting with 30μm particles of SiO2 [PCJ]); for crowns cemented with glass ionomer cement (CIV) and zinc phosphate (CFZ), the inner surface were cleaned with isopropyl alcohol. The fatigue resistance was evaluated by the number of mechanical cycles required for fracture of the specimens through stepwise loads methodology. Samples were cycled for 5,000 cycles at 200 ...
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spelling Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelanaCoroas (Odontologia)Cerâmicas odontológicasCimentos dentariosPrótese dentáriaDental ceramicsThe aim of this study was to investigate the influence of different treatments of the inner surface of crowns and different luting agents on the survival of crowns made of zirconia partially stabilized by yttrium oxide (YTZP) and porcelain. A first study was performed using finite element analysis, where we compared the values and the distribution of Maximum Principal Stresses (MPS) of flat and anatomical specimens, with variations in the anatomy of ceramic components (crowns composed of Y-TZP and porcelain, with and without contact point, with and without a modified design of Y-TZP supporting the porcelain). The geometries produced in CAD software (Computer-Aided-Design) were imported for a finite element analysis software. A punctual and vertical load of 200 N was carried out on the central node of the models. The MPS distribution was quite similar among the studied models with important stress concentration in the singularity zone. Considering the lack of standardization in the preparation of anatomical specimens for laboratory tests, the choice of the simplified model (flat) could be justified. In a second step, 90 flat preparations were machined in epoxy resin and received crowns with Y-TZP infrastructure made by CAD/CAM system and veneered with porcelain by the stratified technique. Six conditions were tested (n=15): for crowns cemented with Panavia F, four different treatments were evaluated (cleaning with isopropyl alcohol [PC], overglaze application [POG], sandblasting with 125 μm particles of Al2O3 [POA]; sandblasting with 30μm particles of SiO2 [PCJ]); for crowns cemented with glass ionomer cement (CIV) and zinc phosphate (CFZ), the inner surface were cleaned with isopropyl alcohol. The fatigue resistance was evaluated by the number of mechanical cycles required for fracture of the specimens through stepwise loads methodology. Samples were cycled for 5,000 cycles at 200 ...O objetivo do presente estudo foi investigar a influência de diferentes tratamentos da superfície interna de coroas e de diferentes agentes cimentantes na sobrevivência de coroas de zircônia parcialmente estabilizada por óxido de ítrio (Y-TZP) recobertas por porcelana. Inicialmente foi realizado um estudo de elementos finitos onde foram comparados os valores e a distribuição das Tensões Máxima Principal (TMP) de espécimes flat e anatômicos, com variações na anatomia dos componentes cerâmicos (coroas de Y-TZP e porcelana, com e sem ponto de contato, com e sem desenho modificado da Y-TZP para suporte da porcelana). As geometrias produzidas em software CAD (Computer-aided design) foram importadas para software de análise de elementos finitos. Foi realizado carregamento pontual e vertical de 200 N sobre o nó central dos modelos. O padrão da distribuição da TMP foi bastante similar entre os modelos estudados, com concentração importante de tensões na zona de singularidade. Considerando a dificuldade de padronização na confecção de espécimes anatômicos durante ensaios laboratoriais, a escolha do modelo simplificado (flat) pode ser justificada. Em uma segunda etapa foram usinados 90 preparos flat em resina epóxica que receberam coroas com infraestrutura em Y-TZP confeccionadas pelo sistema CAD/CAM e recobertas com porcelana pela técnica estratificada. Seis condições foram testadas (n=15): para coroas cimentadas com cimento resinoso Panavia F, quatro diferentes tratamentos foram avaliados (limpeza com álcool isopropílico [PC], aplicação de glaze [POG], jateamento com Al2O3 125 μm [POA]; jateamento com partículas de óxido de alumínio revestidas por sílica de 30 μm [PCJ]); para as coroas cimentadas com cimento de ionômero de vidro (CIV) e de fosfato de zinco (CFZ), as superfícies foram limpas com álcool isopropílico. A resistência à fadiga foi avaliada...Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista (Unesp)Bottino, Marco Antonio [UNESP]Kleverlaan, Cornelis Johannes [UNESP]Universidade Estadual Paulista (Unesp)Anami, Lilian Costa [UNESP]2015-09-17T15:26:27Z2015-09-17T15:26:27Z2015-05-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis98 f. : il.application/pdfANAMI, Lilian Costa. Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana. 2015. 98 f. Tese (doutorado) - UNESP - Univ Estadual Paulista- Instituto de Ciência e Tecnologia de São José dos Campos, 2015.http://hdl.handle.net/11449/127911000844478http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/31-08-2015/000844478.pdf33004145070P89234456003563666Alephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2024-01-18T06:30:44Zoai:repositorio.unesp.br:11449/127911Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:22:12.732935Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
title Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
spellingShingle Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
Anami, Lilian Costa [UNESP]
Coroas (Odontologia)
Cerâmicas odontológicas
Cimentos dentarios
Prótese dentária
Dental ceramics
title_short Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
title_full Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
title_fullStr Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
title_full_unstemmed Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
title_sort Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana
author Anami, Lilian Costa [UNESP]
author_facet Anami, Lilian Costa [UNESP]
author_role author
dc.contributor.none.fl_str_mv Bottino, Marco Antonio [UNESP]
Kleverlaan, Cornelis Johannes [UNESP]
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Anami, Lilian Costa [UNESP]
dc.subject.por.fl_str_mv Coroas (Odontologia)
Cerâmicas odontológicas
Cimentos dentarios
Prótese dentária
Dental ceramics
topic Coroas (Odontologia)
Cerâmicas odontológicas
Cimentos dentarios
Prótese dentária
Dental ceramics
description The aim of this study was to investigate the influence of different treatments of the inner surface of crowns and different luting agents on the survival of crowns made of zirconia partially stabilized by yttrium oxide (YTZP) and porcelain. A first study was performed using finite element analysis, where we compared the values and the distribution of Maximum Principal Stresses (MPS) of flat and anatomical specimens, with variations in the anatomy of ceramic components (crowns composed of Y-TZP and porcelain, with and without contact point, with and without a modified design of Y-TZP supporting the porcelain). The geometries produced in CAD software (Computer-Aided-Design) were imported for a finite element analysis software. A punctual and vertical load of 200 N was carried out on the central node of the models. The MPS distribution was quite similar among the studied models with important stress concentration in the singularity zone. Considering the lack of standardization in the preparation of anatomical specimens for laboratory tests, the choice of the simplified model (flat) could be justified. In a second step, 90 flat preparations were machined in epoxy resin and received crowns with Y-TZP infrastructure made by CAD/CAM system and veneered with porcelain by the stratified technique. Six conditions were tested (n=15): for crowns cemented with Panavia F, four different treatments were evaluated (cleaning with isopropyl alcohol [PC], overglaze application [POG], sandblasting with 125 μm particles of Al2O3 [POA]; sandblasting with 30μm particles of SiO2 [PCJ]); for crowns cemented with glass ionomer cement (CIV) and zinc phosphate (CFZ), the inner surface were cleaned with isopropyl alcohol. The fatigue resistance was evaluated by the number of mechanical cycles required for fracture of the specimens through stepwise loads methodology. Samples were cycled for 5,000 cycles at 200 ...
publishDate 2015
dc.date.none.fl_str_mv 2015-09-17T15:26:27Z
2015-09-17T15:26:27Z
2015-05-28
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv ANAMI, Lilian Costa. Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana. 2015. 98 f. Tese (doutorado) - UNESP - Univ Estadual Paulista- Instituto de Ciência e Tecnologia de São José dos Campos, 2015.
http://hdl.handle.net/11449/127911
000844478
http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/31-08-2015/000844478.pdf
33004145070P8
9234456003563666
identifier_str_mv ANAMI, Lilian Costa. Influência de tratamentos de superfície e agentes cimentantes na sobrevivência de coroas de Y-TZP recobertas por porcelana. 2015. 98 f. Tese (doutorado) - UNESP - Univ Estadual Paulista- Instituto de Ciência e Tecnologia de São José dos Campos, 2015.
000844478
33004145070P8
9234456003563666
url http://hdl.handle.net/11449/127911
http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/31-08-2015/000844478.pdf
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publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
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reponame:Repositório Institucional da UNESP
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