Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Dental Journal |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402014000200141 |
Resumo: | The objectives of this study were to evaluate physical properties and antibacterial activity of a light-activated composite modified with silver nanoparticles. Discs were produced with unmodified resin (control group - CG) and modified resin with silver nanoparticles at two concentrations, 0.3% wt (MR03) and 0.6% wt (MR06). Streptococcus mutans and Lactobacillus acidophilus biofilms were induced in vitro by incubation of discs in a 20% sucrose medium, followed by sonication and counting of viable cells after 1, 4 and 7 days (n=9). The arithmetic roughness of all three groups was evaluated by atomic force microscopy (n=9). Compression assay was conducted in all groups to measure the compressive strength at failure and elasticity modulus (n=5). Data were subjected to ANOVA and Tukey's tests (α=0.05%). At all three time points the number of viable cells was statistically lower for MR03 and MR06 compared with CG, for both specimens. MR03 and MR06 showed no significant differences. Microscopic analysis demonstrated no significant differences for roughness among the three groups (p>0.05). The MR03 was stronger to compression than CG, and MR06 was statistically lower than CG and MR03. It was concluded that the MR03 were less conducive to biofilm growth, without compromising the strength in compression and surface roughness. |
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Brazilian Dental Journal |
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Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In VitrosilvernanoparticlescompositebactericidalThe objectives of this study were to evaluate physical properties and antibacterial activity of a light-activated composite modified with silver nanoparticles. Discs were produced with unmodified resin (control group - CG) and modified resin with silver nanoparticles at two concentrations, 0.3% wt (MR03) and 0.6% wt (MR06). Streptococcus mutans and Lactobacillus acidophilus biofilms were induced in vitro by incubation of discs in a 20% sucrose medium, followed by sonication and counting of viable cells after 1, 4 and 7 days (n=9). The arithmetic roughness of all three groups was evaluated by atomic force microscopy (n=9). Compression assay was conducted in all groups to measure the compressive strength at failure and elasticity modulus (n=5). Data were subjected to ANOVA and Tukey's tests (α=0.05%). At all three time points the number of viable cells was statistically lower for MR03 and MR06 compared with CG, for both specimens. MR03 and MR06 showed no significant differences. Microscopic analysis demonstrated no significant differences for roughness among the three groups (p>0.05). The MR03 was stronger to compression than CG, and MR06 was statistically lower than CG and MR03. It was concluded that the MR03 were less conducive to biofilm growth, without compromising the strength in compression and surface roughness.Fundação Odontológica de Ribeirão Preto2014-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402014000200141Brazilian Dental Journal v.25 n.2 2014reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/0103-6440201302398info:eu-repo/semantics/openAccessNeves,Patrícia Bolzan Agnelli dasAgnelli,José Augusto MarcondesKurachi,CristinaSouza,Clovis Wesley Oliveira deeng2014-08-15T00:00:00Zoai:scielo:S0103-64402014000200141Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2014-08-15T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false |
dc.title.none.fl_str_mv |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
title |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
spellingShingle |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro Neves,Patrícia Bolzan Agnelli das silver nanoparticles composite bactericidal |
title_short |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
title_full |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
title_fullStr |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
title_full_unstemmed |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
title_sort |
Addition of Silver Nanoparticles to Composite Resin: Effect on Physical and Bactericidal Properties In Vitro |
author |
Neves,Patrícia Bolzan Agnelli das |
author_facet |
Neves,Patrícia Bolzan Agnelli das Agnelli,José Augusto Marcondes Kurachi,Cristina Souza,Clovis Wesley Oliveira de |
author_role |
author |
author2 |
Agnelli,José Augusto Marcondes Kurachi,Cristina Souza,Clovis Wesley Oliveira de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Neves,Patrícia Bolzan Agnelli das Agnelli,José Augusto Marcondes Kurachi,Cristina Souza,Clovis Wesley Oliveira de |
dc.subject.por.fl_str_mv |
silver nanoparticles composite bactericidal |
topic |
silver nanoparticles composite bactericidal |
description |
The objectives of this study were to evaluate physical properties and antibacterial activity of a light-activated composite modified with silver nanoparticles. Discs were produced with unmodified resin (control group - CG) and modified resin with silver nanoparticles at two concentrations, 0.3% wt (MR03) and 0.6% wt (MR06). Streptococcus mutans and Lactobacillus acidophilus biofilms were induced in vitro by incubation of discs in a 20% sucrose medium, followed by sonication and counting of viable cells after 1, 4 and 7 days (n=9). The arithmetic roughness of all three groups was evaluated by atomic force microscopy (n=9). Compression assay was conducted in all groups to measure the compressive strength at failure and elasticity modulus (n=5). Data were subjected to ANOVA and Tukey's tests (α=0.05%). At all three time points the number of viable cells was statistically lower for MR03 and MR06 compared with CG, for both specimens. MR03 and MR06 showed no significant differences. Microscopic analysis demonstrated no significant differences for roughness among the three groups (p>0.05). The MR03 was stronger to compression than CG, and MR06 was statistically lower than CG and MR03. It was concluded that the MR03 were less conducive to biofilm growth, without compromising the strength in compression and surface roughness. |
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=S0103-64402014000200141 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402014000200141 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-6440201302398 |
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 |
Fundação Odontológica de Ribeirão Preto |
publisher.none.fl_str_mv |
Fundação Odontológica de Ribeirão Preto |
dc.source.none.fl_str_mv |
Brazilian Dental Journal v.25 n.2 2014 reponame:Brazilian Dental Journal instname:Fundação Odontológica de Ribeirão Preto (FUNORP) instacron:FUNORP |
instname_str |
Fundação Odontológica de Ribeirão Preto (FUNORP) |
instacron_str |
FUNORP |
institution |
FUNORP |
reponame_str |
Brazilian Dental Journal |
collection |
Brazilian Dental Journal |
repository.name.fl_str_mv |
Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP) |
repository.mail.fl_str_mv |
bdj@forp.usp.br||sergio@fosjc.unesp.br |
_version_ |
1754204093068345344 |