Mechanical properties of zirconia after different surface treatments and repeated firings

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dc.contributor.authorSubasi, Meryem Gulce
dc.contributor.authorDemir, Necla
dc.contributor.authorKara, Ozlem
dc.contributor.authorOzturk, A. Nilgun
dc.contributor.authorOzel, Faruk
dc.date.accessioned2020-03-26T18:51:27Z
dc.date.available2020-03-26T18:51:27Z
dc.date.issued2014
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractPURPOSE. This study investigated the influence of surface conditioning procedures and repeated firings on monoclinic content and strength of zirconia before cementation. MATERIALS AND METHODS. Sintered bar-shaped zirconia specimens were subjected to no surface treatment (control), air abrasion, Or grinding (n=21). Their roughness was evaluated using a profilometer, and microscope analysis was performed on one specimen of each group. Then, 2 or 10 repeated firings (n=10) were executed, the monoclinic content of specimens was analyzed by X-ray diffraction, and a three-point flexural strength test was performed. Surface roughness values were compared using one-way analysis of variance (ANOVA) and Tukey honestly significant difference (HSD) tests, the monoclinic content values were tested using Kruskal-Wallis and Mahn-Whitney U tests, and the flexural strength values were tested using two-way ANOVA and Tukey HSD tests (P=.05). Spearman's correlation test was performed to define relationships among measured parameters. RESULTS. Surface-treated specimens were rougher than untreated specimens and had a higher monoclinic content (P<.005), and the relationship between roughness and monoclinic content was significant (P<.000). Neither surface treatment nor firing significantly affected the flexural strength, but Weibull analysis showed that for the air-abraded samples the characteristic strength was significantly. lower after the 10th firing than after. the 2nd firing. CONCLUSION. After firing, a negligible amount of monoclinic content remained on the zirconia surfaces, and rougher surfaces had higher monoclinic contents than untreated surfaces. Multiple firings Could be performed if necessary, but the fracture probability could increase after multiple firings for rougher surfaces.en_US
dc.identifier.doi10.4047/jap.2014.6.6.462en_US
dc.identifier.endpage467en_US
dc.identifier.issn2005-7806en_US
dc.identifier.issn2005-7814en_US
dc.identifier.issue6en_US
dc.identifier.pmid25551006en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage462en_US
dc.identifier.urihttps://dx.doi.org/10.4047/jap.2014.6.6.462
dc.identifier.urihttps://hdl.handle.net/20.500.12395/30979
dc.identifier.volume6en_US
dc.identifier.wosWOS:000347269700006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherKOREAN ACAD PROSTHODONTICSen_US
dc.relation.ispartofJOURNAL OF ADVANCED PROSTHODONTICSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectSurface treatmenten_US
dc.subjectZirconium oxideen_US
dc.subjectCeramicsen_US
dc.subjectX-ray diffractionen_US
dc.subjectFlexural strengthen_US
dc.titleMechanical properties of zirconia after different surface treatments and repeated firingsen_US
dc.typeArticleen_US

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