Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva

Detalhes bibliográficos
Autor(a) principal: Quezada-Castillo,Elvar
Data de Publicação: 2019
Outros Autores: Aguilar-Castro,Wilder, Quezada-Alván,Bertha
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100327
Resumo: ABSTRACT Galvanic corrosion is a metal dissolution process that occurs when two metals of different electrochemical potential are immersed in an electrolyte causing electrical currents between the metals through the conducting medium. To restore lost or damaged teeth, different alloys are used, leaving the mouth exposed to electrical currents that circulate through saliva and dental fluids. In the present work, the potentials and densities of corrosion currents of galvanic pairs of silver amalgams and copper base dental alloys were determined simultaneously using potenciodynamic methods, finding that the most resistant to corrosion are the pairs formed by silver amalgams of high copper and Cu -Zn alloys, and that the corrosion products released in greater quantity in the electrolytic medium are formed by Hg, Cu, Zn and Ni ions.
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spelling Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial salivaCorrosiondental alloypolarization curveartificial salivagalvanic pairABSTRACT Galvanic corrosion is a metal dissolution process that occurs when two metals of different electrochemical potential are immersed in an electrolyte causing electrical currents between the metals through the conducting medium. To restore lost or damaged teeth, different alloys are used, leaving the mouth exposed to electrical currents that circulate through saliva and dental fluids. In the present work, the potentials and densities of corrosion currents of galvanic pairs of silver amalgams and copper base dental alloys were determined simultaneously using potenciodynamic methods, finding that the most resistant to corrosion are the pairs formed by silver amalgams of high copper and Cu -Zn alloys, and that the corrosion products released in greater quantity in the electrolytic medium are formed by Hg, Cu, Zn and Ni ions.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100327Matéria (Rio de Janeiro) v.24 n.1 2019reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620190001.0636info:eu-repo/semantics/openAccessQuezada-Castillo,ElvarAguilar-Castro,WilderQuezada-Alván,Berthaeng2019-07-03T00:00:00Zoai:scielo:S1517-70762019000100327Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2019-07-03T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
title Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
spellingShingle Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
Quezada-Castillo,Elvar
Corrosion
dental alloy
polarization curve
artificial saliva
galvanic pair
title_short Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
title_full Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
title_fullStr Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
title_full_unstemmed Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
title_sort Corrosion of galvanic pairs of dental alloys copper base with silver amalgams in artificial saliva
author Quezada-Castillo,Elvar
author_facet Quezada-Castillo,Elvar
Aguilar-Castro,Wilder
Quezada-Alván,Bertha
author_role author
author2 Aguilar-Castro,Wilder
Quezada-Alván,Bertha
author2_role author
author
dc.contributor.author.fl_str_mv Quezada-Castillo,Elvar
Aguilar-Castro,Wilder
Quezada-Alván,Bertha
dc.subject.por.fl_str_mv Corrosion
dental alloy
polarization curve
artificial saliva
galvanic pair
topic Corrosion
dental alloy
polarization curve
artificial saliva
galvanic pair
description ABSTRACT Galvanic corrosion is a metal dissolution process that occurs when two metals of different electrochemical potential are immersed in an electrolyte causing electrical currents between the metals through the conducting medium. To restore lost or damaged teeth, different alloys are used, leaving the mouth exposed to electrical currents that circulate through saliva and dental fluids. In the present work, the potentials and densities of corrosion currents of galvanic pairs of silver amalgams and copper base dental alloys were determined simultaneously using potenciodynamic methods, finding that the most resistant to corrosion are the pairs formed by silver amalgams of high copper and Cu -Zn alloys, and that the corrosion products released in greater quantity in the electrolytic medium are formed by Hg, Cu, Zn and Ni ions.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S1517-70762019000100327
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100327
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620190001.0636
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 Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.24 n.1 2019
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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