Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin

Detalhes bibliográficos
Autor(a) principal: Bertolini,Martinna de Mendonça e
Data de Publicação: 2014
Outros Autores: Cavalcanti,Yuri Wanderley, Bordin,Dimorvan, Silva,Wander José da, Del Bel Cury,Altair Antoninha
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242014000100209
Resumo: The effect of Candida albicans biofilms and methyl methacrylate (MMA) pretreatment on the bond strength between soft denture liners and polymethyl methacrylate (PMMA) resin was analyzed. Specimens were prepared and randomly divided with respect to PMMA pretreatment, soft liner type (silicone-based or PMMA-based), and presence or absence of a C. albicans biofilm. Samples were composed of a soft denture liner bonded between two PMMA bars. Specimens (n = 10) were incubated to produce a C. albicans biofilm or stored in sterile PBS for 12 days. The tensile bond strength test was performed and failure type was determined using a stereomicroscope. Surface roughness (SR) and scanning electron microscopy (SEM) analysis were performed on denture liners (n = 8). Highest bond strength was observed in samples containing a silicone-based soft liner and stored in PBS, regardless of pretreatment (p < 0.01). Silicone-based specimens mostly underwent adhesive failures, while samples containing PMMA-based liners predominantly underwent cohesive failures. The silicone-based specimens SR decreased after 12 days of biofilm accumulation or PBS storage, while the SR of PMMA-based soft liners increased (p < 0.01). The PMMA-based soft liners surfaces presented sharp valleys and depressions, while silicone-based specimens surfaces exhibited more gentle features. In vitro exposure to C. albicans biofilms reduced the adhesion of denture liners to PMMA resin, and MMA pretreatment is recommended during relining procedures.
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spelling Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resinCandida albicansDenture LinersTensile StrengthPolymethyl MethacrylateThe effect of Candida albicans biofilms and methyl methacrylate (MMA) pretreatment on the bond strength between soft denture liners and polymethyl methacrylate (PMMA) resin was analyzed. Specimens were prepared and randomly divided with respect to PMMA pretreatment, soft liner type (silicone-based or PMMA-based), and presence or absence of a C. albicans biofilm. Samples were composed of a soft denture liner bonded between two PMMA bars. Specimens (n = 10) were incubated to produce a C. albicans biofilm or stored in sterile PBS for 12 days. The tensile bond strength test was performed and failure type was determined using a stereomicroscope. Surface roughness (SR) and scanning electron microscopy (SEM) analysis were performed on denture liners (n = 8). Highest bond strength was observed in samples containing a silicone-based soft liner and stored in PBS, regardless of pretreatment (p < 0.01). Silicone-based specimens mostly underwent adhesive failures, while samples containing PMMA-based liners predominantly underwent cohesive failures. The silicone-based specimens SR decreased after 12 days of biofilm accumulation or PBS storage, while the SR of PMMA-based soft liners increased (p < 0.01). The PMMA-based soft liners surfaces presented sharp valleys and depressions, while silicone-based specimens surfaces exhibited more gentle features. In vitro exposure to C. albicans biofilms reduced the adhesion of denture liners to PMMA resin, and MMA pretreatment is recommended during relining procedures.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2014-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242014000100209Brazilian Oral Research v.28 n.1 2014reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242013005000025info:eu-repo/semantics/openAccessBertolini,Martinna de Mendonça eCavalcanti,Yuri WanderleyBordin,DimorvanSilva,Wander José daDel Bel Cury,Altair Antoninhaeng2016-05-19T00:00:00Zoai:scielo:S1806-83242014000100209Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2016-05-19T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
title Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
spellingShingle Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
Bertolini,Martinna de Mendonça e
Candida albicans
Denture Liners
Tensile Strength
Polymethyl Methacrylate
title_short Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
title_full Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
title_fullStr Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
title_full_unstemmed Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
title_sort Candida albicans biofilms and MMA surface treatment influence the adhesion of soft denture liners to PMMA resin
author Bertolini,Martinna de Mendonça e
author_facet Bertolini,Martinna de Mendonça e
Cavalcanti,Yuri Wanderley
Bordin,Dimorvan
Silva,Wander José da
Del Bel Cury,Altair Antoninha
author_role author
author2 Cavalcanti,Yuri Wanderley
Bordin,Dimorvan
Silva,Wander José da
Del Bel Cury,Altair Antoninha
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bertolini,Martinna de Mendonça e
Cavalcanti,Yuri Wanderley
Bordin,Dimorvan
Silva,Wander José da
Del Bel Cury,Altair Antoninha
dc.subject.por.fl_str_mv Candida albicans
Denture Liners
Tensile Strength
Polymethyl Methacrylate
topic Candida albicans
Denture Liners
Tensile Strength
Polymethyl Methacrylate
description The effect of Candida albicans biofilms and methyl methacrylate (MMA) pretreatment on the bond strength between soft denture liners and polymethyl methacrylate (PMMA) resin was analyzed. Specimens were prepared and randomly divided with respect to PMMA pretreatment, soft liner type (silicone-based or PMMA-based), and presence or absence of a C. albicans biofilm. Samples were composed of a soft denture liner bonded between two PMMA bars. Specimens (n = 10) were incubated to produce a C. albicans biofilm or stored in sterile PBS for 12 days. The tensile bond strength test was performed and failure type was determined using a stereomicroscope. Surface roughness (SR) and scanning electron microscopy (SEM) analysis were performed on denture liners (n = 8). Highest bond strength was observed in samples containing a silicone-based soft liner and stored in PBS, regardless of pretreatment (p < 0.01). Silicone-based specimens mostly underwent adhesive failures, while samples containing PMMA-based liners predominantly underwent cohesive failures. The silicone-based specimens SR decreased after 12 days of biofilm accumulation or PBS storage, while the SR of PMMA-based soft liners increased (p < 0.01). The PMMA-based soft liners surfaces presented sharp valleys and depressions, while silicone-based specimens surfaces exhibited more gentle features. In vitro exposure to C. albicans biofilms reduced the adhesion of denture liners to PMMA resin, and MMA pretreatment is recommended during relining procedures.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
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=S1806-83242014000100209
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242014000100209
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-83242013005000025
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 Sociedade Brasileira de Pesquisa Odontológica - SBPqO
publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.source.none.fl_str_mv Brazilian Oral Research v.28 n.1 2014
reponame:Brazilian Oral Research
instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron:SBPQO
instname_str Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron_str SBPQO
institution SBPQO
reponame_str Brazilian Oral Research
collection Brazilian Oral Research
repository.name.fl_str_mv Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
repository.mail.fl_str_mv pob@edu.usp.br||bor@sbpqo.org.br
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