Effects of sintering protocol and dipping time on the optical properties of monolithic zirconia

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dc.contributor.authorSavas, Tuba Yilmaz
dc.contributor.authorAkin, Ceyda
dc.date.accessioned2024-02-23T14:13:38Z
dc.date.available2024-02-23T14:13:38Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractStatement of problem. The use of monolithic zirconia for restorations has become popular. However, the effects of the coloring process and sintering procedure on the optical properties of monolithic zirconia remain unclear. Purpose. The purpose of this in vitro study was to evaluate the effects of the different sintering protocols and dipping times on the CIELab color parameters, color difference (Delta E-00), translucency parameter (TP00), opalescence parameter (OP), and contrast ratio (CR) of monolithic zirconia. Materials and methods. One hundred and fifty monolithic zirconia specimens were prepared and divided into 5 groups according to different dipping times in A2 shade coloring liquid: no immersion (D0), 3 minutes (D3), 5 minutes (D5), 7 minutes (D7), and 9 minutes (D9). The specimens were further divided into 3 subgroups according to different sintering protocols (n=10): classic (C); speed (S); and super-speed sintering (SS). The CIE L*a*b* values, Delta E-00, TP00, OP, and CR values were determined with a spectrophotometer. The data were analyzed with 2-way ANOVA and Bonferroni post hoc tests (alpha=.05). Results. The effects of the sintering protocol, dipping time, and interaction of the sintering protocol and dipping time were significant for the L*, a*, b*, Delta E-00, TP00, OP, and CR parameters (P<.001). The Delta E-00 values of the SS groups were significantly higher than those of the C and S groups for all the dipping times assessed. However, only the CD3 and CD5 groups had Delta E-00 values below the acceptability threshold (<1.8). Coloring significantly reduced TP00 values and significantly increased OP and CR values in the colored groups compared with those in the D0 groups. The C and S protocols for different dipping times showed similar optical properties in TP00, OP, CR, and Delta E-00 (excluding the D0 and D9 groups) compared with the SS protocol. Conclusion. Different sintering protocols combined with various dipping times significantly affected the optical properties of monolithic zirconia. However, C and S sintering with a 3-minute and 5-minute coloring process yielded more favorable optical results than SS sintering and prolonged dipping times.en_US
dc.identifier.doi10.1016/j.prosdent.2021.12.004
dc.identifier.issn0022-3913
dc.identifier.issn1097-6841
dc.identifier.issue5en_US
dc.identifier.pmid35153063en_US
dc.identifier.scopus2-s2.0-85124411784en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.prosdent.2021.12.004
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12511
dc.identifier.volume127en_US
dc.identifier.wosWOS:000833532100002en_US
dc.identifier.wosqualityQ1en_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.subject[Keyword Not Available]en_US
dc.titleEffects of sintering protocol and dipping time on the optical properties of monolithic zirconiaen_US
dc.typeArticleen_US

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