Influence of water immersion on porosity of acrylic resin polymerized by microwave energy

Detalhes bibliográficos
Autor(a) principal: Rossato, Marisa Bagiotto
Data de Publicação: 2008
Outros Autores: Montagner, Henrique, Scheid, Patrícia Alves, Burmann, Paulo Afonso, Braun, Katia Olmedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista odonto ciência (Online)
Texto Completo: https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902
Resumo: Purpose: The purpose of this investigation was to evaluate if immersion in water during polymerization would affect the porosity of acrylic resins polymerized by microwave energy. Methods: Fifty specimens (20x20x5mm) were fabricated with two types of colorless acrylic resin (Vipi Cril® and Vipi Wave®). Group 1 (G1) specimens were polymerized by conventional hot water bath (12h at 74ºC), and the experimental groups (G2, G3, G4 and G5) were polymerized by microwave energy (cycle of 20min at 180W, plus 5min at 540W). Groups G2 and G4 were immersed in water during the polymerization cycle in a microwave oven, and G3 and G5 were polymerized without water immersion. Specimens were subjected to visual evaluation without magnification by one calibrated observer, using a score system of porosity with values ranging from 0 to 3 in ascending order. Results: All specimens scored zero. The conventional resin (Vipi Cril liquid®) could be processed by microwave energy resulting no visible porosity. Conclusion: The results showed that immersion in water during microwave polymerization did not influence acrylic resin porosity. Key words: Acrylic resins; porosity; microwaves
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spelling Influence of water immersion on porosity of acrylic resin polymerized by microwave energyInfluência da imersão em água na porosidade de resina acrílica polimerizada por energia de microondasAcrylic resinsporositymicrowavesAcrylic resinsPurpose: The purpose of this investigation was to evaluate if immersion in water during polymerization would affect the porosity of acrylic resins polymerized by microwave energy. Methods: Fifty specimens (20x20x5mm) were fabricated with two types of colorless acrylic resin (Vipi Cril® and Vipi Wave®). Group 1 (G1) specimens were polymerized by conventional hot water bath (12h at 74ºC), and the experimental groups (G2, G3, G4 and G5) were polymerized by microwave energy (cycle of 20min at 180W, plus 5min at 540W). Groups G2 and G4 were immersed in water during the polymerization cycle in a microwave oven, and G3 and G5 were polymerized without water immersion. Specimens were subjected to visual evaluation without magnification by one calibrated observer, using a score system of porosity with values ranging from 0 to 3 in ascending order. Results: All specimens scored zero. The conventional resin (Vipi Cril liquid®) could be processed by microwave energy resulting no visible porosity. Conclusion: The results showed that immersion in water during microwave polymerization did not influence acrylic resin porosity. Key words: Acrylic resins; porosity; microwavesObjetivo: Foi propósito deste trabalho avaliar se a imersão em água poderia alterar o grau de porosidade interna da resina acrílica processada em microondas. Metodologia: Foram confeccionados 50 corpos-de-prova (20x20x5mm) utilizando-se as resinas acrílicas incolores Vipi Cril® e Vipi Wave®. A polimerização do Grupo 1 (G1) foi obtida pela técnica convencional em banho de água quente (12h a 74ºC) e os grupos experimentais (G2, G3, G4 e G5) foram polimerizados por energia de microondas (ciclo de 20min a 180W, mais 5min a 540W). Os corpos-de-prova dos grupos G2 e G4 foram polimerizados imersos em água, enquanto que a polimerização dos grupos G3 e G5 ocorreu sem imersão. Todos os corpos-de-prova de resina acrílica incolor foram submetidos à avaliação visual a olho nu por um único observador calibrado, que atribuiu valores de 0 a 3 em uma escala crescente de porosidade. Resultados: Todos os corpos-de-prova receberam escore 0. A resina convencional (líquido Vipi Cril®) processada por energia de microondas não resultou em porosidade visível a olho nu. Conclusão: Os resultados permitiram concluir que não houve alteração na porosidade da resina polimerizada por energia de microondas, com ou sem imersão da mufla em água. Palavras-chave: Resinas acrílicas; porosidade; microondasEDIPUCRS - Editora Universitária da PUCRS2008-07-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articlelaboratoryapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902Revista Odonto Ciência; Vol. 23 No. 4 (2008); 342 - 345Revista Odonto Ciência; v. 23 n. 4 (2008); 342 - 3451980-65230102-9460reponame:Revista odonto ciência (Online)instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSenghttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902/3432Rossato, Marisa BagiottoMontagner, HenriqueScheid, Patrícia AlvesBurmann, Paulo AfonsoBraun, Katia Olmedoinfo:eu-repo/semantics/openAccess2013-11-18T10:32:04Zoai:ojs.revistaseletronicas.pucrs.br:article/2902Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2013-11-18T10:32:04Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.none.fl_str_mv Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
Influência da imersão em água na porosidade de resina acrílica polimerizada por energia de microondas
title Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
spellingShingle Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
Rossato, Marisa Bagiotto
Acrylic resins
porosity
microwaves
Acrylic resins
title_short Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
title_full Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
title_fullStr Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
title_full_unstemmed Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
title_sort Influence of water immersion on porosity of acrylic resin polymerized by microwave energy
author Rossato, Marisa Bagiotto
author_facet Rossato, Marisa Bagiotto
Montagner, Henrique
Scheid, Patrícia Alves
Burmann, Paulo Afonso
Braun, Katia Olmedo
author_role author
author2 Montagner, Henrique
Scheid, Patrícia Alves
Burmann, Paulo Afonso
Braun, Katia Olmedo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Rossato, Marisa Bagiotto
Montagner, Henrique
Scheid, Patrícia Alves
Burmann, Paulo Afonso
Braun, Katia Olmedo
dc.subject.por.fl_str_mv Acrylic resins
porosity
microwaves
Acrylic resins
topic Acrylic resins
porosity
microwaves
Acrylic resins
description Purpose: The purpose of this investigation was to evaluate if immersion in water during polymerization would affect the porosity of acrylic resins polymerized by microwave energy. Methods: Fifty specimens (20x20x5mm) were fabricated with two types of colorless acrylic resin (Vipi Cril® and Vipi Wave®). Group 1 (G1) specimens were polymerized by conventional hot water bath (12h at 74ºC), and the experimental groups (G2, G3, G4 and G5) were polymerized by microwave energy (cycle of 20min at 180W, plus 5min at 540W). Groups G2 and G4 were immersed in water during the polymerization cycle in a microwave oven, and G3 and G5 were polymerized without water immersion. Specimens were subjected to visual evaluation without magnification by one calibrated observer, using a score system of porosity with values ranging from 0 to 3 in ascending order. Results: All specimens scored zero. The conventional resin (Vipi Cril liquid®) could be processed by microwave energy resulting no visible porosity. Conclusion: The results showed that immersion in water during microwave polymerization did not influence acrylic resin porosity. Key words: Acrylic resins; porosity; microwaves
publishDate 2008
dc.date.none.fl_str_mv 2008-07-10
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
laboratory
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2902/3432
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
dc.source.none.fl_str_mv Revista Odonto Ciência; Vol. 23 No. 4 (2008); 342 - 345
Revista Odonto Ciência; v. 23 n. 4 (2008); 342 - 345
1980-6523
0102-9460
reponame:Revista odonto ciência (Online)
instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron:PUC_RS
instname_str Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron_str PUC_RS
institution PUC_RS
reponame_str Revista odonto ciência (Online)
collection Revista odonto ciência (Online)
repository.name.fl_str_mv Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
repository.mail.fl_str_mv ||odontociencia@pucrs.br
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