Influence of Thermal Aging on the Marginal/Internal Fit of Incisor Veneered and Monolithic Zirconia Crowns

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dc.authoridhttps://orcid.org/0000-0002-3320-9244
dc.authoridhttps://orcid.org/0000-0002-4080-7744
dc.authoridhttps://orcid.org/0009-0003-4489-5002
dc.authoridhttps://orcid.org/0000-0003-1213-4957
dc.authoridhttps://orcid.org/0000-0001-6341-7047
dc.authoridhttps://orcid.org/0000-0003-4802-1604
dc.contributor.authorÖzkurt Kayahan, Zeynep
dc.contributor.authorÖzden, Yunus Emre
dc.contributor.authorÇelikyürek Karabağlı, Zeynep
dc.contributor.authorÖzyılmaz, Özgün Yusuf
dc.contributor.authorÖzer, Füsun
dc.contributor.authorBlatz, Markus B.
dc.date.accessioned2026-03-25T08:55:50Z
dc.date.available2026-03-25T08:55:50Z
dc.date.issued2026
dc.departmentFakülteler, Diş Hekimliği Fakültesi, Klinik Bilimler Bölümü
dc.description.abstractObjectives: The aim of the study was to evaluate and compare the effect of thermal aging on the marginal and internal adaptation of veneered and monolithic zirconia (MZ) crowns. Materials and Methods: A maxillary central incisor abutment was digitally designed, fabricated using resin, and scanned for crown design. MZ (IPS e.max ZirCAD Prime Esthetic) and veneered zirconia (VZ; coping: Everest, KaVo; layering: IPS e.max Ceram) crowns were fabricated (n=10). STL files were analyzed in Geomagic Design X to calculate root mean square (RMS) values within the selected marginal and internal regions before and after 10,000, 30,000, and 50,000 thermal cycles with superimposition. Data were analyzed using Shapiro–Wilk and Mann–Whitney U tests. The comparison of thermal aging treatments was evaluated using the Friedman and post hoc Wilcoxon signed-rank tests (p<0.05). Results: Significant differences were found between MZ and VZ crowns (p<0.05). In the MZ group, marginal gaps increased from 104μm (T0) to 115μm (T3), and internal gaps from 122μm (T0) to 146μm (T3). In the VZ group, marginal gaps increased from 82μm (T0) to 128μm (T3) and internal gaps from 136μm (T0) to 204μm (T3). VZ crowns showed higher dimensional changes than MZ crowns. Conclusions: Thermal cycling significantly affected the fit of zirconia crowns. VZ crowns exhibited greater dimensional changes after 30,000 and 50,000 thermal cycles, while MZ crowns maintained superior marginal fit during the same periods. Clinical Significance: This study highlights the influence of thermal aging on the marginal and internal adaptation of veneered and MZ crowns. VZ may be more susceptible to marginal or internal discrepancies after thermal aging, when compared with the MZ.
dc.identifier.citationÖzkurt-Kayahan, Z., Özden, Y. E., Çelikyürek Karabağlı, İ., Özyılmaz, Ö. Y., Ozer, F., & Blatz, M. B. (2026). Influence of thermal aging on the marginal/internal fit of incisor veneered and monolithic zirconia crowns. Journal of Esthetic and Restorative Dentistry. Advance online publication. https://doi.org/10.1111/jerd.70146
dc.identifier.doi10.1111/jerd.70146
dc.identifier.endpage9
dc.identifier.issn1496-4155
dc.identifier.pmid41846304
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/20.500.12941/393
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakPubMed
dc.institutionauthorÖzyılmaz, Özgün Yusuf
dc.institutionauthoridhttps://orcid.org/0000-0003-4802-1604
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofJournal of Esthetic and Restorative Dentistry
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBilayered Zirconia
dc.subjectInternal Fit
dc.subjectMarginal Fit
dc.subjectMonolithic Zirconia
dc.subjectThermal Aging
dc.subjectVeneered Zirconia
dc.titleInfluence of Thermal Aging on the Marginal/Internal Fit of Incisor Veneered and Monolithic Zirconia Crowns
dc.typeArticle

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