dc.contributor.author | Øilo, Marit | en_US |
dc.contributor.author | Kvam, Ketil | en_US |
dc.contributor.author | Gjerdet, Nils Roar | en_US |
dc.date.accessioned | 2014-12-09T09:06:54Z | en_US |
dc.date.accessioned | 2014-12-09T20:36:09Z | en_US |
dc.date.accessioned | 2014-12-11T09:36:05Z | |
dc.date.available | 2014-12-11T09:36:05Z | |
dc.date.issued | 2014-04-04 | eng |
dc.identifier.issn | 0909-8836 | |
dc.identifier.uri | https://hdl.handle.net/1956/8904 | |
dc.description.abstract | Comparison 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.iso | eng | eng |
dc.publisher | Wiley | eng |
dc.rights | Attribution-NonCommercial-NoDerivs CC BY-NC-ND | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | eng |
dc.subject | alumina | eng |
dc.subject | dental ceramics | eng |
dc.subject | fracture | eng |
dc.subject | glass-ceramic | eng |
dc.subject | zirconia | eng |
dc.title | Simulation of clinical fractures for three different all-ceramic crowns | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.date.updated | 2014-12-09T09:06:55Z | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2014 The Authors | |
dc.identifier.doi | https://doi.org/10.1111/eos.12128 | |
dc.identifier.cristin | 1111872 | |
dc.source.journal | European Journal of Oral Sciences | |
dc.source.40 | 122 | |
dc.source.14 | 3 | |
dc.source.pagenumber | 245-250 | |
dc.subject.nsi | VDP::Medical sciences: 700::Clinical dentistry sciences: 830::Prosthetics and dental occlusion function: 832 | eng |
dc.subject.nsi | VDP::Medisinske fag: 700::Klinisk odontologiske fag: 830::Protetikk og bitt funksjon: 832 | nob |