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dc.contributor.authorAlifui-Segbaya, Frank
dc.contributor.authorFoley, Paul
dc.contributor.authorWilliams, RJ
dc.date.accessioned2017-05-03T16:12:47Z
dc.date.available2017-05-03T16:12:47Z
dc.date.issued2013
dc.date.modified2013-10-20T23:49:13Z
dc.identifier.issn1355-2546
dc.identifier.doi10.1108/13552541311302941
dc.identifier.urihttp://hdl.handle.net/10072/53134
dc.description.abstractPurpose - Rapid manufacture-produced cobalt chromium alloys are beginning to be used in dentistry but there are few published results relating to their properties. The purpose of this paper is to determine the corrosion resistance of a rapid manufacture-produced dental alloy and compare it to a standard dental casting alloy. Design/methodology/approach - In accordance with ISO 22674, ten samples of each alloy were fabricated in approximately 45mm x 10mm x 2mm rectangular prisms, a sample number in excess of the standard requirements. The groups were further divided into those with highly polished surfaces and those with electrobrightened surfaces. Each sample was immersed in artificial saliva, suspended by a nylon thread for 42 days at 378C. Readings for cobalt, chromium and molybdenum ions released into solutions were obtained using an atomic absorption spectrometer at 1, 4, 7, 14, 21, 28, 35, and 42 day intervals at a detection limit of one part per million. Findings - Ion release of cobalt, chromium and molybdenum was well within the threshold prescribed by the standard. The alloys were safe for use as dental devices with respect to the above metals. The rapid manufacture alloy however performed better. In addition the data indicated that for both alloys, there was no discernable difference between a polished and an electrobrightened surface. Originality/value - The rapid manufacture alloy studied shows a safe level of corrosion resistance with respect to cobalt, chromium and molybdenum according to ISO definitions. Further biocompatibility tests are recommended. Keywords Alloys, Corrosion resistance, Dental alloys, Rapid manufacture, Cobalt chromium, Fixed prosthodontics, Removable partial dentures
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent426175 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherEmerald Group Publishing
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationY
dc.relation.ispartofpagefrom95
dc.relation.ispartofpageto99
dc.relation.ispartofissue2
dc.relation.ispartofjournalRapid Prototyping Journal
dc.relation.ispartofvolume19
dc.rights.retentionY
dc.subject.fieldofresearchAnalytical spectrometry
dc.subject.fieldofresearchBiomedical engineering
dc.subject.fieldofresearchBiomaterials
dc.subject.fieldofresearchMedical devices
dc.subject.fieldofresearchCAD/CAM systems
dc.subject.fieldofresearchMetals and alloy materials
dc.subject.fieldofresearchMechanical engineering
dc.subject.fieldofresearchDental materials and equipment
dc.subject.fieldofresearchcode340101
dc.subject.fieldofresearchcode4003
dc.subject.fieldofresearchcode400302
dc.subject.fieldofresearchcode400308
dc.subject.fieldofresearchcode401402
dc.subject.fieldofresearchcode401607
dc.subject.fieldofresearchcode4017
dc.subject.fieldofresearchcode320302
dc.titleThe corrosive effects of artificial saliva on cast and rapid manufacture-produced cobalt chromium alloys
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2012 Emerald. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.date.issued2012
gro.hasfulltextFull Text
gro.griffith.authorAlifui-Segbaya, Frank


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