Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties

Detalhes bibliográficos
Autor(a) principal: CARVALHO, Ana Márcia Macedo Ladeira
Data de Publicação: 2015
Outros Autores: CARVALHO, Vinícius Xavier Mattar de, DUMONT, Vitor César, SANTOS, Maria Helena, SILVA, Rafael Menezes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/1807-3107BOR-2015.vol29.0030
http://www.locus.ufv.br/handle/123456789/12097
Resumo: In this study, conventional restorative glass ionomer cement (GIC) was modified by embedding it with mechanically processed cellulose fibers. Two concentrations of fibers were weighed and agglutinated into the GIC during manipulation, yielding Experimental Groups 2 (G2; 3.62 wt% of fibers) and 3 (G3; 7.24 wt% of fibers), which were compared against a control group containing no fibers (G1). The compressive strengths and elastic modulus of the three groups, and their diametral tensile strengths and stiffness, were evaluated on a universal test machine. The compressive and diametral tensile strengths were significantly higher in G3 than in G1. Statistically significant differences in elastic modulus were also found between G2 and G1 and between G2 and G3, whereas the stiffness significantly differed between G1 and G2. The materials were then characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Heterogeneously shaped particles were found on the G2 and G3 surfaces, and the cement matrices were randomly interspersed with long intermingled fibers. The EDS spectra of the composites revealed the elemental compositions of the precursor materials. The physically processed cellulosic fibers (especially at the higher concentration) increased the compressive and diametral tensile strengths of the GIC, and demonstrated acceptable elastic modulus and stiffness.
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spelling CARVALHO, Ana Márcia Macedo LadeiraCARVALHO, Vinícius Xavier Mattar deDUMONT, Vitor CésarSANTOS, Maria HelenaSILVA, Rafael Menezes2017-10-17T11:56:06Z2017-10-17T11:56:06Z2015-01-2718073107http://dx.doi.org/10.1590/1807-3107BOR-2015.vol29.0030http://www.locus.ufv.br/handle/123456789/12097In this study, conventional restorative glass ionomer cement (GIC) was modified by embedding it with mechanically processed cellulose fibers. Two concentrations of fibers were weighed and agglutinated into the GIC during manipulation, yielding Experimental Groups 2 (G2; 3.62 wt% of fibers) and 3 (G3; 7.24 wt% of fibers), which were compared against a control group containing no fibers (G1). The compressive strengths and elastic modulus of the three groups, and their diametral tensile strengths and stiffness, were evaluated on a universal test machine. The compressive and diametral tensile strengths were significantly higher in G3 than in G1. Statistically significant differences in elastic modulus were also found between G2 and G1 and between G2 and G3, whereas the stiffness significantly differed between G1 and G2. The materials were then characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Heterogeneously shaped particles were found on the G2 and G3 surfaces, and the cement matrices were randomly interspersed with long intermingled fibers. The EDS spectra of the composites revealed the elemental compositions of the precursor materials. The physically processed cellulosic fibers (especially at the higher concentration) increased the compressive and diametral tensile strengths of the GIC, and demonstrated acceptable elastic modulus and stiffness.engBrazilian Oral Researchvol.29 n.1, 1-8,Jan 2015Glass Ionomer CementsCelluloseCompressive StrengthTensile StrengthMicroscopyElectronAddition of mechanically processed cellulosic fibers to ionomer cement: mechanical propertiesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINAL1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdf1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdfTexto completoapplication/pdf1435293https://locus.ufv.br//bitstream/123456789/12097/1/1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdf7b7af93298284fcae03b6f4e317967c0MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/12097/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAIL1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdf.jpg1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdf.jpgIM Thumbnailimage/jpeg4541https://locus.ufv.br//bitstream/123456789/12097/3/1807-3107-bor-29-1-1807-3107BOR-2015vol290030.pdf.jpg08658c0fc47d12199e9c356afc11f605MD53123456789/120972017-10-17 22:00:25.982oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452017-10-18T01:00:25LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.en.fl_str_mv Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
title Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
spellingShingle Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
CARVALHO, Ana Márcia Macedo Ladeira
Glass Ionomer Cements
Cellulose
Compressive Strength
Tensile Strength
Microscopy
Electron
title_short Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
title_full Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
title_fullStr Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
title_full_unstemmed Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
title_sort Addition of mechanically processed cellulosic fibers to ionomer cement: mechanical properties
author CARVALHO, Ana Márcia Macedo Ladeira
author_facet CARVALHO, Ana Márcia Macedo Ladeira
CARVALHO, Vinícius Xavier Mattar de
DUMONT, Vitor César
SANTOS, Maria Helena
SILVA, Rafael Menezes
author_role author
author2 CARVALHO, Vinícius Xavier Mattar de
DUMONT, Vitor César
SANTOS, Maria Helena
SILVA, Rafael Menezes
author2_role author
author
author
author
dc.contributor.author.fl_str_mv CARVALHO, Ana Márcia Macedo Ladeira
CARVALHO, Vinícius Xavier Mattar de
DUMONT, Vitor César
SANTOS, Maria Helena
SILVA, Rafael Menezes
dc.subject.pt-BR.fl_str_mv Glass Ionomer Cements
Cellulose
Compressive Strength
Tensile Strength
Microscopy
Electron
topic Glass Ionomer Cements
Cellulose
Compressive Strength
Tensile Strength
Microscopy
Electron
description In this study, conventional restorative glass ionomer cement (GIC) was modified by embedding it with mechanically processed cellulose fibers. Two concentrations of fibers were weighed and agglutinated into the GIC during manipulation, yielding Experimental Groups 2 (G2; 3.62 wt% of fibers) and 3 (G3; 7.24 wt% of fibers), which were compared against a control group containing no fibers (G1). The compressive strengths and elastic modulus of the three groups, and their diametral tensile strengths and stiffness, were evaluated on a universal test machine. The compressive and diametral tensile strengths were significantly higher in G3 than in G1. Statistically significant differences in elastic modulus were also found between G2 and G1 and between G2 and G3, whereas the stiffness significantly differed between G1 and G2. The materials were then characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Heterogeneously shaped particles were found on the G2 and G3 surfaces, and the cement matrices were randomly interspersed with long intermingled fibers. The EDS spectra of the composites revealed the elemental compositions of the precursor materials. The physically processed cellulosic fibers (especially at the higher concentration) increased the compressive and diametral tensile strengths of the GIC, and demonstrated acceptable elastic modulus and stiffness.
publishDate 2015
dc.date.issued.fl_str_mv 2015-01-27
dc.date.accessioned.fl_str_mv 2017-10-17T11:56:06Z
dc.date.available.fl_str_mv 2017-10-17T11:56:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/1807-3107BOR-2015.vol29.0030
http://www.locus.ufv.br/handle/123456789/12097
dc.identifier.issn.none.fl_str_mv 18073107
identifier_str_mv 18073107
url http://dx.doi.org/10.1590/1807-3107BOR-2015.vol29.0030
http://www.locus.ufv.br/handle/123456789/12097
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartofseries.pt-BR.fl_str_mv vol.29 n.1, 1-8,Jan 2015
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Brazilian Oral Research
publisher.none.fl_str_mv Brazilian Oral Research
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