Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007 |
Resumo: | The dental amalgam is a metallic alloy commonly utilized as a restorative material. In this study, Electrochemical Impedance Spectroscopy, polarisation curves and Mott-Schottky analysis were used to evaluate the physical characteristics of the passive film formed on amalgam surface; X-Ray and UV spectrophotometric analyses were also used to determine the alloy phases and possible soluble corrosion products, respectively. This study was done with Duxalloy® and Tytin® Plus samples in four different electrolytes: Phosphate Buffer Saline, Hank Solution, Artificial Saliva and NaCl 0.9%. In general, the longer the immersion time, the smaller the resistance, possibly due to film breakage; Duxalloy® presented, at the end of 168 h of immersion, a higher resistance when compared to Tytin® Plus. X-Ray analysis showed differences between the two studied brands. UV spectrophotometric analysis demonstrated a small absorption band at ~276 nm. These films kept their protective properties after 168 h of immersion |
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Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluidsDental amalgamsElectrochemical Impedance SpectroscopyCorrosion, Mott-SchottkyPolarisation CurvesThe dental amalgam is a metallic alloy commonly utilized as a restorative material. In this study, Electrochemical Impedance Spectroscopy, polarisation curves and Mott-Schottky analysis were used to evaluate the physical characteristics of the passive film formed on amalgam surface; X-Ray and UV spectrophotometric analyses were also used to determine the alloy phases and possible soluble corrosion products, respectively. This study was done with Duxalloy® and Tytin® Plus samples in four different electrolytes: Phosphate Buffer Saline, Hank Solution, Artificial Saliva and NaCl 0.9%. In general, the longer the immersion time, the smaller the resistance, possibly due to film breakage; Duxalloy® presented, at the end of 168 h of immersion, a higher resistance when compared to Tytin® Plus. X-Ray analysis showed differences between the two studied brands. UV spectrophotometric analysis demonstrated a small absorption band at ~276 nm. These films kept their protective properties after 168 h of immersionSociedade Portuguesa de Materiais2009-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007Ciência & Tecnologia dos Materiais v.21 n.3-4 2009reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007Alves,V. A.Souza,D. G.Reis,R. Q.Silva,L. A. daRossi,A.info:eu-repo/semantics/openAccess2024-02-06T17:01:07Zoai:scielo:S0870-83122009000200007Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:16:43.291001Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
title |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
spellingShingle |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids Alves,V. A. Dental amalgams Electrochemical Impedance Spectroscopy Corrosion, Mott-Schottky Polarisation Curves |
title_short |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
title_full |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
title_fullStr |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
title_full_unstemmed |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
title_sort |
Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids |
author |
Alves,V. A. |
author_facet |
Alves,V. A. Souza,D. G. Reis,R. Q. Silva,L. A. da Rossi,A. |
author_role |
author |
author2 |
Souza,D. G. Reis,R. Q. Silva,L. A. da Rossi,A. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Alves,V. A. Souza,D. G. Reis,R. Q. Silva,L. A. da Rossi,A. |
dc.subject.por.fl_str_mv |
Dental amalgams Electrochemical Impedance Spectroscopy Corrosion, Mott-Schottky Polarisation Curves |
topic |
Dental amalgams Electrochemical Impedance Spectroscopy Corrosion, Mott-Schottky Polarisation Curves |
description |
The dental amalgam is a metallic alloy commonly utilized as a restorative material. In this study, Electrochemical Impedance Spectroscopy, polarisation curves and Mott-Schottky analysis were used to evaluate the physical characteristics of the passive film formed on amalgam surface; X-Ray and UV spectrophotometric analyses were also used to determine the alloy phases and possible soluble corrosion products, respectively. This study was done with Duxalloy® and Tytin® Plus samples in four different electrolytes: Phosphate Buffer Saline, Hank Solution, Artificial Saliva and NaCl 0.9%. In general, the longer the immersion time, the smaller the resistance, possibly due to film breakage; Duxalloy® presented, at the end of 168 h of immersion, a higher resistance when compared to Tytin® Plus. X-Ray analysis showed differences between the two studied brands. UV spectrophotometric analysis demonstrated a small absorption band at ~276 nm. These films kept their protective properties after 168 h of immersion |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-07-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-83122009000200007 |
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 Portuguesa de Materiais |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Materiais |
dc.source.none.fl_str_mv |
Ciência & Tecnologia dos Materiais v.21 n.3-4 2009 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137263299330048 |