Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100430 |
Resumo: | Abstract Sources of calcium and phosphate have been added to dental restorative materials to improve their anticaries effect. Objective This study evaluated the effect of adding calcium glycerophosphate (CaGP) to resin-modified glass ionomer cement (RMGIC) on the physico-mechanical properties, ion release, and enamel demineralization. Material and Methods: Specimens were fabricated for each experimental group: RMGIC without CaGP (Control), RMGIC with 1, 3 and 9% CaGP. To determine the release of fluoride (F), calcium (Ca) and phosphorus (P), six specimens were immersed in demineralization and remineralization solutions for 15 days. In another experimental trial, the following physico-mechanical properties were evaluated at time intervals of 1 and 7 days after fabrication: compressive strength (n=12), diametral tensile strength (n=12), surface hardness of material (n=6) and the degree of conversion of monomers (n=8). To study enamel demineralization, specimens (n=12) were attached to enamel blocks and submitted to pH-cycling. Subsequently, surface and cross-sectional hardness and the concentration of F, Ca and P in enamel were determined. Results The addition of CaGP to RMGIC led to higher mean release of F, Ca and P when compared with control (p<0.001). Mechanical properties were within the range of those of the ionomer cements after addition of 1% and 3% CaGP. The degree of conversion did not differ between groups at the 1st and the 7th day (p>0.439). The addition of 3% and 9% CaGP reduced mineral loss and increased F, Ca and P in the enamel when compared with control (p<0.05). Conclusion The addition of 3% CaGP in RMGIC increased the release of F, P and Ca, reduced enamel demineralization, and maintained the physico-mechanical properties within the parameters for this material. |
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Journal of applied oral science (Online) |
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Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralizationGlass ionomer cementsTooth demineralizationPolymerizationCompressive strengthPhosphatesAbstract Sources of calcium and phosphate have been added to dental restorative materials to improve their anticaries effect. Objective This study evaluated the effect of adding calcium glycerophosphate (CaGP) to resin-modified glass ionomer cement (RMGIC) on the physico-mechanical properties, ion release, and enamel demineralization. Material and Methods: Specimens were fabricated for each experimental group: RMGIC without CaGP (Control), RMGIC with 1, 3 and 9% CaGP. To determine the release of fluoride (F), calcium (Ca) and phosphorus (P), six specimens were immersed in demineralization and remineralization solutions for 15 days. In another experimental trial, the following physico-mechanical properties were evaluated at time intervals of 1 and 7 days after fabrication: compressive strength (n=12), diametral tensile strength (n=12), surface hardness of material (n=6) and the degree of conversion of monomers (n=8). To study enamel demineralization, specimens (n=12) were attached to enamel blocks and submitted to pH-cycling. Subsequently, surface and cross-sectional hardness and the concentration of F, Ca and P in enamel were determined. Results The addition of CaGP to RMGIC led to higher mean release of F, Ca and P when compared with control (p<0.001). Mechanical properties were within the range of those of the ionomer cements after addition of 1% and 3% CaGP. The degree of conversion did not differ between groups at the 1st and the 7th day (p>0.439). The addition of 3% and 9% CaGP reduced mineral loss and increased F, Ca and P in the enamel when compared with control (p<0.05). Conclusion The addition of 3% CaGP in RMGIC increased the release of F, P and Ca, reduced enamel demineralization, and maintained the physico-mechanical properties within the parameters for this material.Faculdade De Odontologia De Bauru - USP2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100430Journal of Applied Oral Science v.27 2019reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/1678-7757-2018-0188info:eu-repo/semantics/openAccessSANTOS,Sâmia SassDELBEM,Alberto Carlos BotazzoMORAES,João Carlos SilosSOUZA,José Antônio SantosOLIVEIRA,Lenara Queiroz ChavesPEDRINI,Deniseeng2019-03-28T00:00:00Zoai:scielo:S1678-77572019000100430Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2019-03-28T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
title |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
spellingShingle |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization SANTOS,Sâmia Sass Glass ionomer cements Tooth demineralization Polymerization Compressive strength Phosphates |
title_short |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
title_full |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
title_fullStr |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
title_full_unstemmed |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
title_sort |
Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization |
author |
SANTOS,Sâmia Sass |
author_facet |
SANTOS,Sâmia Sass DELBEM,Alberto Carlos Botazzo MORAES,João Carlos Silos SOUZA,José Antônio Santos OLIVEIRA,Lenara Queiroz Chaves PEDRINI,Denise |
author_role |
author |
author2 |
DELBEM,Alberto Carlos Botazzo MORAES,João Carlos Silos SOUZA,José Antônio Santos OLIVEIRA,Lenara Queiroz Chaves PEDRINI,Denise |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
SANTOS,Sâmia Sass DELBEM,Alberto Carlos Botazzo MORAES,João Carlos Silos SOUZA,José Antônio Santos OLIVEIRA,Lenara Queiroz Chaves PEDRINI,Denise |
dc.subject.por.fl_str_mv |
Glass ionomer cements Tooth demineralization Polymerization Compressive strength Phosphates |
topic |
Glass ionomer cements Tooth demineralization Polymerization Compressive strength Phosphates |
description |
Abstract Sources of calcium and phosphate have been added to dental restorative materials to improve their anticaries effect. Objective This study evaluated the effect of adding calcium glycerophosphate (CaGP) to resin-modified glass ionomer cement (RMGIC) on the physico-mechanical properties, ion release, and enamel demineralization. Material and Methods: Specimens were fabricated for each experimental group: RMGIC without CaGP (Control), RMGIC with 1, 3 and 9% CaGP. To determine the release of fluoride (F), calcium (Ca) and phosphorus (P), six specimens were immersed in demineralization and remineralization solutions for 15 days. In another experimental trial, the following physico-mechanical properties were evaluated at time intervals of 1 and 7 days after fabrication: compressive strength (n=12), diametral tensile strength (n=12), surface hardness of material (n=6) and the degree of conversion of monomers (n=8). To study enamel demineralization, specimens (n=12) were attached to enamel blocks and submitted to pH-cycling. Subsequently, surface and cross-sectional hardness and the concentration of F, Ca and P in enamel were determined. Results The addition of CaGP to RMGIC led to higher mean release of F, Ca and P when compared with control (p<0.001). Mechanical properties were within the range of those of the ionomer cements after addition of 1% and 3% CaGP. The degree of conversion did not differ between groups at the 1st and the 7th day (p>0.439). The addition of 3% and 9% CaGP reduced mineral loss and increased F, Ca and P in the enamel when compared with control (p<0.05). Conclusion The addition of 3% CaGP in RMGIC increased the release of F, P and Ca, reduced enamel demineralization, and maintained the physico-mechanical properties within the parameters for this material. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100430 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572019000100430 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-7757-2018-0188 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Faculdade De Odontologia De Bauru - USP |
publisher.none.fl_str_mv |
Faculdade De Odontologia De Bauru - USP |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science v.27 2019 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1748936440044060672 |