Chemical stability of two dentin single-bottle adhesives as a function of solvent loss

Detalhes bibliográficos
Autor(a) principal: Yevenes, Ismael Henry
Data de Publicação: 2008
Outros Autores: Baltra, Maria Olga, Urzua, Iván, Reyes, Juan, Petrasic, Ljubica
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/2671
Resumo: Purpose: Two single-bottle dentin adhesive systems, Single-Bond and Prime and Bond NT, containing ethanol-water or acetone as solvents, respectively, were investigated for their chemical stability regarding solvent loss. Methods: Stability was measured by the adhesive weight changes in accelerated degradation tests under higher room temperature and relative humidity (RH) than normal conditions over 15 days: 25±2ºC / 60±5% RH, 30±2ºC / 65±5% RH, 40±2ºC / 70±5% RH, and 50±2ºC / 75±5% RH. For each temperature the slope and the constant rate for weight loss were recorded to obtain the Arrhenius plot. Water content in Single Bond was determined by K Fisher Titration, and total solvent amount was obtained by subtraction from total weight. Results: The results for Single Bond indicated water content of 5.90±0.08% and alcohol content of 39.14±1.19%. For Prime and Bond NT the acetone percentage was 43.08±1.15%. Weight changes after the accelerated degradation tests revealed that solvent loss in Single-Bond adhesive was lower than in Prime and Bond NT adhesive. Conclusion: The results suggest that chemical stability of adhesives containing ethanolwater is greater than formulations containing acetone. Key words: Stability; solvent; dentin adhesive
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spelling Chemical stability of two dentin single-bottle adhesives as a function of solvent lossEstabilidade química de dois adesivos dentinários de frasco único em função da perda de solventeStabilitysolventdentin adhesiveDental adhesivesPurpose: Two single-bottle dentin adhesive systems, Single-Bond and Prime and Bond NT, containing ethanol-water or acetone as solvents, respectively, were investigated for their chemical stability regarding solvent loss. Methods: Stability was measured by the adhesive weight changes in accelerated degradation tests under higher room temperature and relative humidity (RH) than normal conditions over 15 days: 25±2ºC / 60±5% RH, 30±2ºC / 65±5% RH, 40±2ºC / 70±5% RH, and 50±2ºC / 75±5% RH. For each temperature the slope and the constant rate for weight loss were recorded to obtain the Arrhenius plot. Water content in Single Bond was determined by K Fisher Titration, and total solvent amount was obtained by subtraction from total weight. Results: The results for Single Bond indicated water content of 5.90±0.08% and alcohol content of 39.14±1.19%. For Prime and Bond NT the acetone percentage was 43.08±1.15%. Weight changes after the accelerated degradation tests revealed that solvent loss in Single-Bond adhesive was lower than in Prime and Bond NT adhesive. Conclusion: The results suggest that chemical stability of adhesives containing ethanolwater is greater than formulations containing acetone. Key words: Stability; solvent; dentin adhesiveObjetivo: Dois sistemas adesivos de frasco único, Single-Bond e Prime and Bond NT, contendo etanol-água e acetona como solventes, respectivamente, foram avaliados quanto à sua estabilidade química devido à perda de solvente. Metodologia: A estabilidade foi medida pelas alterações de peso do adesivo em ensaios de degradação acelerada sob condições de temperatura e umidade acima das condições normais ao longo de 15 dias: 25±2ºC / 60±5% RH, 30±2ºC / 65±5% RH, 40±2ºC / 70±5% RH, e 50±2ºC / 75±5% RH. Para cada temperatura, a inclinação e a taxa constante de perda de peso foram registradas para obter o gráfico de Arrhenius. O conteúdo de água no adesivo Single Bond foi determinado por ensaio K Fisher e a quantidade total de solvente foi obtida pela diferença com o peso total. Resultados: Os resultados para Single Bond indicaram conteúdo de 5,90±0,08% de água e 39,14±1,19%de álcool. Para Prime and Bond NT a porcentagem de acetona foi de 43,08±1,15%. As alterações de peso depois dos ensaios de degradação acelerada mostraram que a perda de solvente no adesivo Single-Bond foi menor que no adesivo Prime and Bond NT. Conclusão: Os resultados sugerem que a estabilidade química do adesivo contendo etanolágua é maior que da formulação contendo acetona. Palavras-chave: Estabilidade; solvente; adesivo dentinárioEDIPUCRS - Editora Universitária da PUCRS2008-06-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articlelaboratoryapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2671Revista Odonto Ciência; Vol. 23 No. 3 (2008); 220 - 224Revista Odonto Ciência; v. 23 n. 3 (2008); 220 - 2241980-65230102-9460reponame: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/2671/3178Yevenes, Ismael HenryBaltra, Maria OlgaUrzua, IvánReyes, JuanPetrasic, Ljubicainfo:eu-repo/semantics/openAccess2013-11-18T10:39:57Zoai:ojs.revistaseletronicas.pucrs.br:article/2671Revistahttps://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 Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
Estabilidade química de dois adesivos dentinários de frasco único em função da perda de solvente
title Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
spellingShingle Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
Yevenes, Ismael Henry
Stability
solvent
dentin adhesive
Dental adhesives
title_short Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
title_full Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
title_fullStr Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
title_full_unstemmed Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
title_sort Chemical stability of two dentin single-bottle adhesives as a function of solvent loss
author Yevenes, Ismael Henry
author_facet Yevenes, Ismael Henry
Baltra, Maria Olga
Urzua, Iván
Reyes, Juan
Petrasic, Ljubica
author_role author
author2 Baltra, Maria Olga
Urzua, Iván
Reyes, Juan
Petrasic, Ljubica
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Yevenes, Ismael Henry
Baltra, Maria Olga
Urzua, Iván
Reyes, Juan
Petrasic, Ljubica
dc.subject.por.fl_str_mv Stability
solvent
dentin adhesive
Dental adhesives
topic Stability
solvent
dentin adhesive
Dental adhesives
description Purpose: Two single-bottle dentin adhesive systems, Single-Bond and Prime and Bond NT, containing ethanol-water or acetone as solvents, respectively, were investigated for their chemical stability regarding solvent loss. Methods: Stability was measured by the adhesive weight changes in accelerated degradation tests under higher room temperature and relative humidity (RH) than normal conditions over 15 days: 25±2ºC / 60±5% RH, 30±2ºC / 65±5% RH, 40±2ºC / 70±5% RH, and 50±2ºC / 75±5% RH. For each temperature the slope and the constant rate for weight loss were recorded to obtain the Arrhenius plot. Water content in Single Bond was determined by K Fisher Titration, and total solvent amount was obtained by subtraction from total weight. Results: The results for Single Bond indicated water content of 5.90±0.08% and alcohol content of 39.14±1.19%. For Prime and Bond NT the acetone percentage was 43.08±1.15%. Weight changes after the accelerated degradation tests revealed that solvent loss in Single-Bond adhesive was lower than in Prime and Bond NT adhesive. Conclusion: The results suggest that chemical stability of adhesives containing ethanolwater is greater than formulations containing acetone. Key words: Stability; solvent; dentin adhesive
publishDate 2008
dc.date.none.fl_str_mv 2008-06-22
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/2671
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2671
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/2671/3178
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); 220 - 224
Revista Odonto Ciência; v. 23 n. 3 (2008); 220 - 224
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
_version_ 1754820874242883584

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