Loss of residual monomer from resilient lining materials processed by different methods

Detalhes bibliográficos
Autor(a) principal: Torres León, Blanca Liliana
Data de Publicação: 2008
Outros Autores: Del Bel Cury, Altair Antoninha, Rodrigues Garcia, Renata Cunha Matheus
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/4196
Resumo: Purpose: To evaluate residual monomer release from resilient denture lining materials polymerized by different methods. Methods: Two materials were assessed: Ever-Soft polymerized by hot water bath or microwave energy, and Light Liner polymerized by chemical reaction and visible light (dual polymerization). Residual monomer release was measured in 12 specimens (40x10x0.3mm) made of each material and polymerization method. The specimens were stored in distilled water for 168 hours at 37ºC, and analyzed daily by ultraviolet spectrometry (Light Liner: 204nm, Ever-Soft: 206nm). Data were analyzed by one-way ANOVA and Bonferroni test (α=0.05). The residual monomer released as a function of time was determined by polynomial regression analysis. Results: Residual monomer amount released at 168 hours from specimens polymerized by hot water bath (0.27±0.01μg/cm2) was significantly greater (P < 0.05) than from those processed by microwave energy (0.25±0.02μg/cm2). Ever-Soft showed decrease in monomer release over time, tending to stabilize at 96 hours. Light Liner continued to release monomer over time. Conclusion: Ever-Soft may be polymerized by microwave energy. Residual monomer release values were low, and the monomer levels decreased over time. Key words: Laboratory research; resilient lining material; residual monomer
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spelling Loss of residual monomer from resilient lining materials processed by different methodsPerda de monômero residual de reembasadores resilientes processados por diferentes métodosresilient lining materialresidual monomerdenture relinersPurpose: To evaluate residual monomer release from resilient denture lining materials polymerized by different methods. Methods: Two materials were assessed: Ever-Soft polymerized by hot water bath or microwave energy, and Light Liner polymerized by chemical reaction and visible light (dual polymerization). Residual monomer release was measured in 12 specimens (40x10x0.3mm) made of each material and polymerization method. The specimens were stored in distilled water for 168 hours at 37ºC, and analyzed daily by ultraviolet spectrometry (Light Liner: 204nm, Ever-Soft: 206nm). Data were analyzed by one-way ANOVA and Bonferroni test (α=0.05). The residual monomer released as a function of time was determined by polynomial regression analysis. Results: Residual monomer amount released at 168 hours from specimens polymerized by hot water bath (0.27±0.01μg/cm2) was significantly greater (P < 0.05) than from those processed by microwave energy (0.25±0.02μg/cm2). Ever-Soft showed decrease in monomer release over time, tending to stabilize at 96 hours. Light Liner continued to release monomer over time. Conclusion: Ever-Soft may be polymerized by microwave energy. Residual monomer release values were low, and the monomer levels decreased over time. Key words: Laboratory research; resilient lining material; residual monomerObjetivo: Avaliar o monômero residual liberado de materiais resilientes para reembasamento polimerizados por diferentes métodos. Metodologia: Dois materiais foram testados: Ever-Soft polymerizado por banho quente de água ou por energia de microondas, e Light Liner polimerizado quimicamente e por luz visível (polimerização dual). O monômero residual liberado foi mensurado em 12 espécimes (40x10x0,3mm) fabricados com cada material e método de polimerização. Os espécimes foram armazenados em água destilada por 168 horas a 37ºC, e analisados diariamente por espectrometria ultravioleta (Light Liner: 204nm, Ever-Soft: 206nm). Os dados foram analisados por ANOVA de fator único e teste de Bonferroni (α=0,05). O monômero residual liberado em relação ao tempo foi determinado por análise de regressão polinomial. Resultados: O monômero residual liberado em 168 horas do teste (μg/cm2) em espécimes polimerizados por banho de água quente (0,27±0,01μg/cm2) foi significativamente maior (P < 0,05) que em espécimes processados por energia de microondas (0,25±0,02μg/cm2). Ever-Soft mostrou uma redução na liberação de monomer residual com o tempo, tendendo a se estabilizar em 96 horas. Light Liner continuou a liberar monômero com o tempo. Conclusão: Ever-Soft pode ser polimerizado por energia de microondas. Os valores de monômero residual liberado foram baixos, e os níveis de monômero diminuíram com o tempo. Palavras-chave: Estudo laboratorial; reembasador resiliente; monômero residualEDIPUCRS - Editora Universitária da PUCRS2008-09-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed ArticleLaboratoryapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4196Revista Odonto Ciência; Vol. 23 No. 3 (2008); 215 - 219Revista Odonto Ciência; v. 23 n. 3 (2008); 215 - 2191980-65230102-9460reponame: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/4196/3179Torres León, Blanca LilianaDel Bel Cury, Altair AntoninhaRodrigues Garcia, Renata Cunha Matheusinfo:eu-repo/semantics/openAccess2013-11-18T10:39:57Zoai:ojs.revistaseletronicas.pucrs.br:article/4196Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2013-11-18T10:39:57Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.none.fl_str_mv Loss of residual monomer from resilient lining materials processed by different methods
Perda de monômero residual de reembasadores resilientes processados por diferentes métodos
title Loss of residual monomer from resilient lining materials processed by different methods
spellingShingle Loss of residual monomer from resilient lining materials processed by different methods
Torres León, Blanca Liliana
resilient lining material
residual monomer
denture reliners
title_short Loss of residual monomer from resilient lining materials processed by different methods
title_full Loss of residual monomer from resilient lining materials processed by different methods
title_fullStr Loss of residual monomer from resilient lining materials processed by different methods
title_full_unstemmed Loss of residual monomer from resilient lining materials processed by different methods
title_sort Loss of residual monomer from resilient lining materials processed by different methods
author Torres León, Blanca Liliana
author_facet Torres León, Blanca Liliana
Del Bel Cury, Altair Antoninha
Rodrigues Garcia, Renata Cunha Matheus
author_role author
author2 Del Bel Cury, Altair Antoninha
Rodrigues Garcia, Renata Cunha Matheus
author2_role author
author
dc.contributor.author.fl_str_mv Torres León, Blanca Liliana
Del Bel Cury, Altair Antoninha
Rodrigues Garcia, Renata Cunha Matheus
dc.subject.por.fl_str_mv resilient lining material
residual monomer
denture reliners
topic resilient lining material
residual monomer
denture reliners
description Purpose: To evaluate residual monomer release from resilient denture lining materials polymerized by different methods. Methods: Two materials were assessed: Ever-Soft polymerized by hot water bath or microwave energy, and Light Liner polymerized by chemical reaction and visible light (dual polymerization). Residual monomer release was measured in 12 specimens (40x10x0.3mm) made of each material and polymerization method. The specimens were stored in distilled water for 168 hours at 37ºC, and analyzed daily by ultraviolet spectrometry (Light Liner: 204nm, Ever-Soft: 206nm). Data were analyzed by one-way ANOVA and Bonferroni test (α=0.05). The residual monomer released as a function of time was determined by polynomial regression analysis. Results: Residual monomer amount released at 168 hours from specimens polymerized by hot water bath (0.27±0.01μg/cm2) was significantly greater (P < 0.05) than from those processed by microwave energy (0.25±0.02μg/cm2). Ever-Soft showed decrease in monomer release over time, tending to stabilize at 96 hours. Light Liner continued to release monomer over time. Conclusion: Ever-Soft may be polymerized by microwave energy. Residual monomer release values were low, and the monomer levels decreased over time. Key words: Laboratory research; resilient lining material; residual monomer
publishDate 2008
dc.date.none.fl_str_mv 2008-09-30
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/4196
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4196
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/4196/3179
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. 3 (2008); 215 - 219
Revista Odonto Ciência; v. 23 n. 3 (2008); 215 - 219
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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