Fracture strength of yttria-stabilized zirconium-dioxide (Y-TZP) fixed dental prostheses (FDPs) with different abutment core thicknesses and connector dimensions

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Fracture strength of yttria-stabilized zirconium-dioxide (Y-TZP) fixed dental prostheses (FDPs) with different abutment core thicknesses and connector dimensions

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dc.contributor.author Ambré, Marcus J sv
dc.contributor.author Aschan, Fredrik sv
dc.contributor.author Vult von Steyern, Per en_US
dc.date.accessioned 2013-02-07T08:52:00Z
dc.date.available 2013-02-07T08:52:00Z
dc.date.issued 2013 en_US
dc.identifier.issn 1059-941X en_US
dc.identifier.uri http://hdl.handle.net/2043/15065
dc.description.abstract Purpose: The aim of this study was to investigate the fracture strength and fracture mode of yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) posterior three-unit FDPs with varying connector dimension and abutment core thickness. Materials and Methods: Seventy 3-unit posterior FDP cores made of Y-TZP were divided into 7 groups with varying connector dimensions and abutment core thicknesses. All the FDPs underwent a simulated aging process including veneering, firing applications, thermocycling, and cyclic preloading. Finally the FDPs were subjected to load until fracture. Results: Significant difference was seen between the different subgroups (p < 0.05). Groups with the same connector dimension showed no significant difference in fracture strength. All fractures of the specimens involved the connector. Conclusions: Within the limitations of this in vitro study, it can be concluded that the strength of an all-ceramic Y-TZP FDP beam depends more on the connector dimension than on the thickness of the abutment core. Results indicate that the minimum abutment core thickness of an all-ceramic Y-TZP FDP might be reduced, compared to the recommended thickness, without reducing the strength of the reconstruction. This indication, however, needs to be verified by further studies before being considered generally applicable. en_US
dc.format.extent 6
dc.language.iso eng en_US
dc.publisher Wiley-Blackwell en_US
dc.subject yttria-stabilized zirconium-dioxide en_US
dc.subject fixed dental prosthesis en_US
dc.subject fracture strength en_US
dc.subject connector dimension en_US
dc.subject abutment core thickness en_US
dc.subject.classification Medicine en_US
dc.title Fracture strength of yttria-stabilized zirconium-dioxide (Y-TZP) fixed dental prostheses (FDPs) with different abutment core thicknesses and connector dimensions en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.identifier.doi 10.1111/jopr.12003 en_US
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Journal of prosthodontics;5
dc.relation.ispartofpublicationvolume 22
dc.format.ePage 382
dc.format.sPage 377
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