Impaction-modified densely sintered yttria-stabilized tetragonal zirconium dioxide : methodology, surface structure, and bond strength

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Impaction-modified densely sintered yttria-stabilized tetragonal zirconium dioxide : methodology, surface structure, and bond strength

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dc.contributor.author Papia, Evaggelia en_US
dc.contributor.author Zethraeus, Johan en_US
dc.contributor.author Ransbäck, Per-Åke en_US
dc.contributor.author Wennerberg, Ann en_US
dc.contributor.author Vult von Steyern, Per en_US
dc.date.accessioned 2012-12-17T09:39:46Z
dc.date.available 2012-12-17T09:39:46Z
dc.date.issued 2012 en_US
dc.identifier.issn 1552-4973 en_US
dc.identifier.uri http://hdl.handle.net/2043/14595
dc.description.abstract The objectives of the study were to describe a novel method for producing zirconium dioxide specimens with a cementation surface that allows adhesive cementation techniques, to describe the surface structure and to evaluate the bond strength. Forty-eight pairs of specimens were fabricated and adhesively luted together. Three different surfaces were tested: impaction-modified surfaces created by using glass granules (G), impaction-modified surfaces created by using polymer granules (P) and a nonmodified control surface (C). Two bonding systems were used, Variolink(®)II (VA) or Panavia™F 2.0 (PA). During the different fabrication steps, the surfaces were examined under light microscope and analyzed with an optical interferometer. All groups were thermocycled and subjected to shear bond strength test. The groups with modified cementation surfaces showed significantly higher shear bond strength: 34.9 MPa (VA-G), 30.9 MPa (VA-P), 29.6 MPa (PA-P), and 26.1 MPa (PA-G) compared with the relevant control group: 20.5 MPa (VA-C) and 17.8 MPa (PA-C). The groups with surface modification showed a rougher surface structure and significantly fewer fractures between the cement and the zirconium dioxide surfaces compared to the control groups where all failures were adhesive. Impaction modification with an impaction medium pressed into the cementation surface of zirconium dioxide-based reconstructions can be used in combination with an additive production technique to increase bond strength. Both modification techniques described in the study result in a rougher surface structure and higher shear bond strength compared to the control groups. en_US
dc.format.extent 8
dc.language.iso eng en_US
dc.publisher Wiley en_US
dc.subject.classification Medicine en_US
dc.title Impaction-modified densely sintered yttria-stabilized tetragonal zirconium dioxide : methodology, surface structure, and bond strength en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.identifier.doi 10.1002/jbm.b.31992 en_US
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Journal of biomedical materials research. Part B, Applied biomaterials;3
dc.relation.ispartofpublicationvolume 100 en_US
dc.format.ePage 684
dc.format.sPage 677
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