The effect of ceramic thickness and number of firings on the color of ceramic systems: An in vitro study

Basit Öğe Kaydı
dc.contributor.authorUludag, Bullent
dc.contributor.authorUsumez, Aslihan
dc.contributor.authorSahin, Volkan
dc.contributor.authorEser, Kursat
dc.contributor.authorErcoban, Ertugrul
dc.date.accessioned2020-03-26T17:18:26Z
dc.date.available2020-03-26T17:18:26Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractStatement of problem. Although all-ceramic restorations are widely used, there is a lack of information on how color is affected by fabrication procedures. Color matching problems may be encountered in a definitive restoration despite careful shade selection. Purpose. The aim of this study was to evaluate the effect of dentin ceramic thickness and repeated firings on the color of glass-in filtrated aluminum-oxide (In-Ceram) and leucite-reinforced (IPS Empress) all-ceramic systems using a colorimeter. Material and methods. Twenty-one disc-shaped specimens, 10 mm in diameter with a 0.6-mm core thickness and 0.5-, 1-, or 1.5-mm dentin ceramic thickness, were made from each of 2 ceramic systems (n = 7). Repeated firings were performed for each group, and the color differences were compared with the color after the initial firing. Color differences among ceramic specimens were measured using a colorimeter (XL-20 Colorimeter), and data were expressed in Commission Internationale d'Eclairage (CIE) LA-B system coordinates. Repeated-measures analysis of variance was used to analyze the data (number of firings, ceramic brand, and ceramic thickness) for significant differences. The Tukey honestly significant difference test and paired 2-tailed tests were used to perform multiple comparisons (alpha = .05). Results. The L*a*b* values of ceramic systems were affected by the number of firings (3, 5, or 7) (P < .01) and ceramic brand (In-ceram or IPS Empress) (P < .01). L* and a* values were affected by ceramic thickness (0.5, 1, or 1.5 mm) (P < .01); however, b* value was not affected by ceramic thickness (P = .075). Significant interactions were present in L*, a*, b* values between number of firings and ceramic brand (P < .01), and between ceramic brand and ceramic thickness (P < .05). Significant interactions were present between number of firings and ceramic thickness (P < .01) in L* and b* values but not in the a* value (P = .379). Conclusion. The analysis revealed that there were substantial changes in L*a*b* color data as the number of firings increased, which resulted in perceptual color changes in L*a*b* color parameters.en_US
dc.identifier.doi10.1016/j.prosdent.2006.11.002en_US
dc.identifier.endpage31en_US
dc.identifier.issn0022-3913en_US
dc.identifier.issn1097-6841en_US
dc.identifier.issue1en_US
dc.identifier.pmid17280888en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage25en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.prosdent.2006.11.002
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21662
dc.identifier.volume97en_US
dc.identifier.wosWOS:000244160600005en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMOSBY-ELSEVIERen_US
dc.relation.ispartofJOURNAL OF PROSTHETIC DENTISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleThe effect of ceramic thickness and number of firings on the color of ceramic systems: An in vitro studyen_US
dc.typeArticleen_US

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