Please use this identifier to cite or link to this item: https://doi.org/10.1111/j.1365-2842.2004.01290.x
DC FieldValue
dc.titleCorrosion behaviour of high copper dental amalgams
dc.contributor.authorYap, A.U.J.
dc.contributor.authorNg, B.L.
dc.contributor.authorBlackwood, D.J.
dc.date.accessioned2014-12-01T08:22:18Z
dc.date.available2014-12-01T08:22:18Z
dc.date.issued2004-06
dc.identifier.citationYap, A.U.J., Ng, B.L., Blackwood, D.J. (2004-06). Corrosion behaviour of high copper dental amalgams. Journal of Oral Rehabilitation 31 (6) : 595-599. ScholarBank@NUS Repository. https://doi.org/10.1111/j.1365-2842.2004.01290.x
dc.identifier.issn0305182X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/113883
dc.description.abstractThis study evaluated the corrosion behaviour of two high copper dental amalgam alloys [Dispersalloy (Dentsply-Caulk) and Tytin (Kerr)] in different electrolytes. Amalgam specimens were prepared, coupled to a copper wire, cemented into glass tubes and polished to a 600-grit finish. A corrosion cell was prepared using a carbon counter-electrode, a standard calomel electrode as the reference and amalgam as the working electrode. The alloys were tested in the following mediums at 37°C: (i) artificial saliva based on Fusayama's solution (FS), (ii) artificial saliva with citric acid adjusted to pH 4.0 (FC) and (iii) 1% sodium chloride solution (SC). Corrosion potentials (E corr) and corrosion rates (Icorr) were determined using potentiostatic and impedance spectroscopy methods. Data was subjected to ANOVA/Scheffe's post hoc test at 0.05 significance level. For both alloys, the corrosion potential in FS was significantly greater than in SC. Corrosion potential of Tytin in FS and SC was also significantly greater than in FC. The corrosion rate of Dispersalloy in FC was significantly greater than in FS and SC. For Tytin, corrosion rate in SC was significantly greater than in FS and FC. Although no significant difference in corrosion potential/rate was observed between the alloys when tested in FS, significant differences were observed when electrochemical testing was carried out in FC and SC. The corrosion behaviour of high copper amalgam alloys are both material and environment dependent. Certain food substances may increase the corrosion of high copper amalgams.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1111/j.1365-2842.2004.01290.x
dc.sourceScopus
dc.subjectAmalgam
dc.subjectCorrosion
dc.subjectEnvironment
dc.subjectHigh-copper
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE
dc.contributor.departmentRESTORATIVE DENTISTRY
dc.description.doi10.1111/j.1365-2842.2004.01290.x
dc.description.sourcetitleJournal of Oral Rehabilitation
dc.description.volume31
dc.description.issue6
dc.description.page595-599
dc.description.codenJORHB
dc.identifier.isiut000221792300014
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