Electrochemical impedance applied to the corrosion behavior of dental amalgams in synthetic physiological fluids

Detalhes bibliográficos
Autor(a) principal: Alves,V. A.
Data de Publicação: 2009
Outros Autores: Souza,D. G., Reis,R. Q., Silva,L. A. da, Rossi,A.
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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spelling 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
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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
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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
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