Fracture strength of veneered translucent zirconium dioxide crowns with different porcelain thicknesses.

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Fracture strength of veneered translucent zirconium dioxide crowns with different porcelain thicknesses.

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dc.contributor.author Bakitian, Fahad
dc.contributor.author Seweryniak, Przemek
dc.contributor.author Papia, Evaggelia
dc.contributor.author Larsson, Christel
dc.contributor.author Vult von Steyern, Per
dc.date.accessioned 2017-12-07T16:17:41Z
dc.date.available 2017-12-07T16:17:41Z
dc.date.issued 2017 en_US
dc.identifier.issn 2333-7931 en_US
dc.identifier.uri http://hdl.handle.net/2043/23931
dc.description.abstract Abstract Objective: To evaluate fracture strength of veneered translucent zirconium dioxide crowns designed with different porcelain layer thicknesses. Materials and Methods: Sixty crowns, divided into six groups of 10, were used in this study. Groups were divided according to different thicknesses of porcelain veneer on translucent zirconium dioxide cores of equal thickness (0.5 mm). Porcelain thicknesses were 2.5, 2.0, 1.0, 0.8, 0.5 and 0.3 mm. Crowns were artificially aged before loaded to fracture. Determination of fracture mode was performed using light microscope. Results: Group 1.0 mm showed significantly (p ≤ .05) highest fracture loads (mean 1540 N) in comparison with groups 2.5, 2.0 and 0.3 mm (mean 851, 910 and 1202 N). There was no significant difference (p>.05) in fracture loads among groups 1.0, 0.8 and 0.5 mm (mean 1540, 1313 and 1286 N). There were significantly (p ≤ .05) more complete fractures in group 0.3 mm compared to all other groups which presented mainly cohesive fractures. Conclusions: Translucent zirconium dioxide crowns can be veneered with minimal thickness layer of 0.5 mm porcelain without showing significantly reduced fracture strength compared to traditionally veneered (1.0–2.0 mm) crowns. Fracture strength of micro-veneered crowns with a layer of porcelain (0.3 mm) is lower than that of traditionally veneered crowns but still within range of what may be considered clinically sufficient. Porcelain layers of 2.0 mm or thicker should be used where expected loads are low only. en_US
dc.format.extent 10
dc.language.iso eng en_US
dc.publisher Taylor & Francis en_US
dc.subject All-ceramic restorations en_US
dc.subject artificial aging en_US
dc.subject monolithic en_US
dc.subject load to fracture en_US
dc.subject porcelain veneer en_US
dc.subject y-tzp en_US
dc.subject.classification Medicine en_US
dc.title Fracture strength of veneered translucent zirconium dioxide crowns with different porcelain thicknesses. en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.identifier.doi 10.1080/23337931.2017.1403288 en_US
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Acta Biomaterialia Odontologica Scandinavica;1
dc.relation.ispartofpublicationvolume 3 en_US
dc.description.authorversion No en_US
dcterms.identifier.OAurl https://doi.org/10.1080/23337931.2017.1403288 en_US
dc.format.ePage 83
dc.format.sPage 74
mahlocal.rights.oaType green
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