Mechanical properties, fracture surface characterization, and microstructural analysis of six noble dental casting alloys.
Identifieur interne : 001280 ( Main/Exploration ); précédent : 001279; suivant : 001281Mechanical properties, fracture surface characterization, and microstructural analysis of six noble dental casting alloys.
Auteurs : RBID : pubmed:21640241English descriptors
- KwdEn :
- Dental Casting Technique, Dental Restoration Failure, Dental Stress Analysis, Elastic Modulus, Gold Alloys (chemistry), Indium, Materials Testing, Mechanics, Metal Ceramic Alloys (chemistry), Microscopy, Electron, Scanning, Palladium, Platinum, Porosity, Silver, Surface Properties, Tensile Strength, Tin.
- MESH :
- chemical , chemistry : Gold Alloys, Metal Ceramic Alloys.
- Dental Casting Technique, Dental Restoration Failure, Dental Stress Analysis, Elastic Modulus, Indium, Materials Testing, Mechanics, Microscopy, Electron, Scanning, Palladium, Platinum, Porosity, Silver, Surface Properties, Tensile Strength, Tin.
Abstract
Because noble dental casting alloys for metal ceramic restorations have a wide range of mechanical properties, knowledge of these properties is needed for rational alloy selection in different clinical situations where cast metal restorations are indicated.
DOI: 10.1016/S0022-3913(11)60081-4
PubMed: 21640241
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Mechanical properties, fracture surface characterization, and microstructural analysis of six noble dental casting alloys.</title><author><name sortKey="Ucar, Yurdanur" uniqKey="Ucar Y">Yurdanur Ucar</name><affiliation wicri:level="1"><nlm:affiliation>Department of Prosthodontics, Cukurova University, Adana, Turkey.</nlm:affiliation><country xml:lang="fr">Turquie</country><wicri:regionArea>Department of Prosthodontics, Cukurova University, Adana</wicri:regionArea></affiliation></author><author><name sortKey="Brantley, William A" uniqKey="Brantley W">William A Brantley</name></author><author><name sortKey="Johnston, William M" uniqKey="Johnston W">William M Johnston</name></author><author><name sortKey="Dasgupta, Tridib" uniqKey="Dasgupta T">Tridib Dasgupta</name></author></titleStmt><publicationStmt><date when="2011">2011</date><idno type="doi">10.1016/S0022-3913(11)60081-4</idno><idno type="RBID">pubmed:21640241</idno><idno type="pmid">21640241</idno><idno type="wicri:Area/Main/Corpus">001354</idno><idno type="wicri:Area/Main/Curation">001354</idno><idno type="wicri:Area/Main/Exploration">001280</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dental Casting Technique</term><term>Dental Restoration Failure</term><term>Dental Stress Analysis</term><term>Elastic Modulus</term><term>Gold Alloys (chemistry)</term><term>Indium</term><term>Materials Testing</term><term>Mechanics</term><term>Metal Ceramic Alloys (chemistry)</term><term>Microscopy, Electron, Scanning</term><term>Palladium</term><term>Platinum</term><term>Porosity</term><term>Silver</term><term>Surface Properties</term><term>Tensile Strength</term><term>Tin</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Gold Alloys</term><term>Metal Ceramic Alloys</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Dental Casting Technique</term><term>Dental Restoration Failure</term><term>Dental Stress Analysis</term><term>Elastic Modulus</term><term>Indium</term><term>Materials Testing</term><term>Mechanics</term><term>Microscopy, Electron, Scanning</term><term>Palladium</term><term>Platinum</term><term>Porosity</term><term>Silver</term><term>Surface Properties</term><term>Tensile Strength</term><term>Tin</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Because noble dental casting alloys for metal ceramic restorations have a wide range of mechanical properties, knowledge of these properties is needed for rational alloy selection in different clinical situations where cast metal restorations are indicated.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">21640241</PMID><DateCreated><Year>2011</Year><Month>06</Month><Day>06</Day></DateCreated><DateCompleted><Year>2011</Year><Month>10</Month><Day>17</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1097-6841</ISSN><JournalIssue CitedMedium="Internet"><Volume>105</Volume><Issue>6</Issue><PubDate><Year>2011</Year><Month>Jun</Month></PubDate></JournalIssue><Title>The Journal of prosthetic dentistry</Title><ISOAbbreviation>J Prosthet Dent</ISOAbbreviation></Journal><ArticleTitle>Mechanical properties, fracture surface characterization, and microstructural analysis of six noble dental casting alloys.</ArticleTitle><Pagination><MedlinePgn>394-402</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/S0022-3913(11)60081-4</ELocationID><Abstract><AbstractText Label="STATEMENT OF PROBLEM" NlmCategory="BACKGROUND">Because noble dental casting alloys for metal ceramic restorations have a wide range of mechanical properties, knowledge of these properties is needed for rational alloy selection in different clinical situations where cast metal restorations are indicated.</AbstractText><AbstractText Label="PURPOSE" NlmCategory="OBJECTIVE">The purpose of this study was to compare the mechanical properties and examine both the fracture and polished surfaces of 6 noble casting alloys that span many currently marketed systems. Five alloys were designed for metal ceramic restorations, and a sixth Type GPT has Type IV alloy for fixed prosthodontics (Maxigold KF) was included for comparison.</AbstractText><AbstractText Label="MATERIAL AND METHODS" NlmCategory="METHODS">Specimens (n=6) meeting dimensional requirements for ISO Standards 9693 and 8891 were loaded to failure in tension using a universal testing machine at a crosshead speed of 2 mm/min. Values of 0.1% and 0.2% yield strength, ultimate tensile strength, elastic modulus, and percentage elongation were obtained. Statistical comparisons of the alloy mechanical properties were made using 1-way ANOVA and the REGW multiple-range test (α=.05). Following fracture surface characterization using scanning electron microscopy (SEM), specimens were embedded in epoxy resin, polished, and again, examined with the SEM.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">When the multiple comparisons were considered, there were generally no significant differences in the elastic modulus, 0.1% and 0.2% offset yield strength, and ultimate tensile strength for the d.SIGN 91 (Au-Pd), d.SIGN 59 (Pd-Ag), Capricorn 15 (Pd-Ag-Au) and Maxigold KF (Au-Ag-Pd) alloys, except that the ultimate tensile strength was significantly lower (P<.05) for Maxigold KF than these other 3 alloys. These 4 mechanical properties were generally significantly lower (P<.05) for Aquarius XH (Au-Pt-Pd) and Brite Gold XH (Au-Pt). The d.SIGN 59 (14.6%) and Capricorn 15 (13.8%) alloys had the highest values of mean percentage elongation, which were not significantly different. Aquarius XH (6.0%) and Maxigold KF (4.2%) had the lower mean values of percentage elongation, which were also not significantly different. The polished and etched surfaces for all alloys revealed equiaxed, fine-grain microstructures, and all fracture surfaces contained casting porosity. Incomplete solidification suggestive of dendritic structures was observed for some alloys. Fracture surfaces were complex, with characteristic features of both brittle and ductile fracture. Precipitate particles on the fracture surfaces indicated the multi-phase character of the alloys.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">For the important mechanical property of yield strength, there were generally no significant differences among the Au-Pd, Pd-Ag, Pd-Ag-Au and Au-Ag-Pd alloys. Wide variation was found in percentage elongation, with the Pd-Ag and Pd-Ag-Au alloys having the highest values and the Au-Pd-Pt and Au-Ag-Pd alloys having the lowest values.</AbstractText><CopyrightInformation>Copyright © 2011 The Editorial Council of the Journal of Prosthetic Dentistry. Published by Mosby, Inc. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ucar</LastName><ForeName>Yurdanur</ForeName><Initials>Y</Initials><Affiliation>Department of Prosthodontics, Cukurova University, Adana, Turkey.</Affiliation></Author><Author ValidYN="Y"><LastName>Brantley</LastName><ForeName>William A</ForeName><Initials>WA</Initials></Author><Author ValidYN="Y"><LastName>Johnston</LastName><ForeName>William M</ForeName><Initials>WM</Initials></Author><Author ValidYN="Y"><LastName>Dasgupta</LastName><ForeName>Tridib</ForeName><Initials>T</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Comparative Study</PublicationType><PublicationType>Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Prosthet Dent</MedlineTA><NlmUniqueID>0376364</NlmUniqueID><ISSNLinking>0022-3913</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Gold Alloys</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Metal Ceramic Alloys</NameOfSubstance></Chemical><Chemical><RegistryNumber>045A6V3VFX</RegistryNumber><NameOfSubstance>Indium</NameOfSubstance></Chemical><Chemical><RegistryNumber>3M4G523W1G</RegistryNumber><NameOfSubstance>Silver</NameOfSubstance></Chemical><Chemical><RegistryNumber>49DFR088MY</RegistryNumber><NameOfSubstance>Platinum</NameOfSubstance></Chemical><Chemical><RegistryNumber>5TWQ1V240M</RegistryNumber><NameOfSubstance>Palladium</NameOfSubstance></Chemical><Chemical><RegistryNumber>7440-31-5</RegistryNumber><NameOfSubstance>Tin</NameOfSubstance></Chemical></ChemicalList><CitationSubset>D</CitationSubset><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Dental Casting Technique</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Dental Restoration Failure</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Dental Stress Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Elastic Modulus</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y">Gold Alloys</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Indium</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Materials Testing</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Mechanics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Metal Ceramic Alloys</DescriptorName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Microscopy, Electron, Scanning</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Palladium</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Platinum</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Porosity</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Silver</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Surface Properties</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tensile Strength</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tin</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>6</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>6</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>10</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0022-3913(11)60081-4</ArticleId><ArticleId IdType="doi">10.1016/S0022-3913(11)60081-4</ArticleId><ArticleId IdType="pubmed">21640241</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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