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dc.contributor.authorØilo, Mariten_US
dc.contributor.authorKvam, Ketilen_US
dc.contributor.authorGjerdet, Nils Roaren_US
dc.date.accessioned2014-12-09T09:06:54Zen_US
dc.date.accessioned2014-12-09T20:36:09Zen_US
dc.date.accessioned2014-12-11T09:36:05Z
dc.date.available2014-12-11T09:36:05Z
dc.date.issued2014-04-04eng
dc.identifier.issn0909-8836
dc.identifier.urihttps://hdl.handle.net/1956/8904
dc.description.abstractComparison of fracture strength and fracture modes of different all-ceramic crown systems is not straightforward. Established methods for reliable testing of all-ceramic crowns are not currently available. Published in-vitro tests rarely simulate clinical failure modes and are therefore unsuited to distinguish between the materials. The in-vivo trials usually lack assessment of failure modes. Fractographic analyses show that clinical crowns usually fail from cracks initiating in the cervical margins, whereas in-vitro specimens fail from contact damage at the occlusal loading point. The aim of this study was to compare three all-ceramic systems using a clinically relevant test method that is able to simulate clinical failure modes. Ten incisor crowns of three types of all-ceramic systems were exposed to soft loading until fracture. The initiation and propagation of cracks in these crowns were compared with those of a reference group of crowns that failed during clinical use. All crowns fractured in a manner similar to fracture of the clinical reference crowns. The zirconia crowns fractured at statistically significantly higher loads than alumina and glass-ceramic crowns. Fracture initiation was in the core material, cervically in the approximal areas.en_US
dc.language.isoengeng
dc.publisherWileyeng
dc.rightsAttribution-NonCommercial-NoDerivs CC BY-NC-NDeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/eng
dc.subjectaluminaeng
dc.subjectdental ceramicseng
dc.subjectfractureeng
dc.subjectglass-ceramiceng
dc.subjectzirconiaeng
dc.titleSimulation of clinical fractures for three different all-ceramic crownsen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2014-12-09T09:06:55Zen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2014 The Authors
dc.identifier.doihttps://doi.org/10.1111/eos.12128
dc.identifier.cristin1111872
dc.source.journalEuropean Journal of Oral Sciences
dc.source.40122
dc.source.143
dc.source.pagenumber245-250
dc.subject.nsiVDP::Medical sciences: 700::Clinical dentistry sciences: 830::Prosthetics and dental occlusion function: 832eng
dc.subject.nsiVDP::Medisinske fag: 700::Klinisk odontologiske fag: 830::Protetikk og bitt funksjon: 832nob


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Attribution-NonCommercial-NoDerivs CC BY-NC-ND
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