Wear behavior and microstructural characterization of translucent multilayer zirconia

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dc.contributor.authorVardhaman, Sonajko
dc.contributor.authorBorba, Marciako
dc.contributor.authorKaizer, Marina R.ko
dc.contributor.authorKim, Do Kyungko
dc.contributor.authorZhang, Yuko
dc.date.accessioned2020-11-30T09:10:07Z-
dc.date.available2020-11-30T09:10:07Z-
dc.date.created2020-11-16-
dc.date.issued2020-11-
dc.identifier.citationDENTAL MATERIALS, v.36, no.11, pp.1407 - 1417-
dc.identifier.issn0109-5641-
dc.identifier.urihttp://hdl.handle.net/10203/277760-
dc.description.abstractObjective. To characterize the composition, microstructure and wear properties of a multi layer translucent zirconia relative to the conventional 3Y-TZP. Methods. Two types of ceramics were evaluated: a multilayer zirconia (MULTI, IPS e.max ZirCAD Multi, Ivoclar Vivadent) and a control 3Y-TZP (IPS e.max ZirCAD LT, Ivoclar Vivadent). Pre-sintered CAD-CAM blocks were cut, ground, sintered and polished to 1 mu m finish. The phase fraction and grain size were measured using XRD and FE-SEM. For wear testing (n = 12), square-shaped specimens (16 x 16 x 1 mm) were adhesively bonded to a dentin analog. Sliding wear tests were performed using a spherical zirconia antagonist (r = 3.15 mm), with 30 N load at 1.5 Hz for 500,000 cycles in water. Optical and scanning electron microscopes and 3D laser scanner were used for quantitative wear analyses. Data were analyzed using Student's t-test (alpha = 0.05). Results. For MULTI, the enamel layer had the highest cubic content and the largest grain size, followed by the two transition layers, and the dentin layer. 3Y-TZP showed the smallest grain size and cubic content. A significant amount of wear was observed in both materials up to 50,000 cycles until it reached a plateau. MULTI showed higher volume loss and greater wear depth than 3Y-TZP (p < 0.01). The higher volume loss was associated with extensive lateral fracture, leading to material spalling from the surface of cubic-containing zirconias. Significance. The wear pattern in multi-layered zirconia was more severe than 3Y-TZP. Additionally, the different layers of the multi-layered zirconia had similar wear behavior.-
dc.languageEnglish-
dc.publisherELSEVIER SCI LTD-
dc.titleWear behavior and microstructural characterization of translucent multilayer zirconia-
dc.typeArticle-
dc.identifier.wosid000581540000008-
dc.identifier.scopusid2-s2.0-85091205878-
dc.type.rimsART-
dc.citation.volume36-
dc.citation.issue11-
dc.citation.beginningpage1407-
dc.citation.endingpage1417-
dc.citation.publicationnameDENTAL MATERIALS-
dc.identifier.doi10.1016/j.dental.2020.08.015-
dc.contributor.localauthorKim, Do Kyung-
dc.contributor.nonIdAuthorVardhaman, Sonaj-
dc.contributor.nonIdAuthorBorba, Marcia-
dc.contributor.nonIdAuthorKaizer, Marina R.-
dc.contributor.nonIdAuthorZhang, Yu-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorCeramics-
dc.subject.keywordAuthorProstheses-
dc.subject.keywordAuthorOcclusion-
dc.subject.keywordAuthorSliding contact-
dc.subject.keywordAuthorWear parameters-
dc.subject.keywordAuthorWear mechanisms-
dc.subject.keywordPlusFATIGUE DAMAGE-
dc.subject.keywordPlusGRAIN-SIZE-
dc.subject.keywordPlusCONTACT-
dc.subject.keywordPlusCERAMICS-
dc.subject.keywordPlusMAPS-
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