Fracture resistance of 3D printed resin-based permanent ceramic fixed dental prostheses after thermocycling

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dc.authorid0000-0002-3724-5656
dc.authorid0009-0007-6784-328X
dc.authorid0000-0002-3797-8665
dc.contributor.authorÖzer, Safa
dc.contributor.authorAtasoyu Akgün, Begüm
dc.contributor.authorÇakan, Umut
dc.date.accessioned2026-08-21T17:29:47Z
dc.date.available2026-08-21T17:29:47Z
dc.date.issued2026
dc.departmentFakülteler, Diş Hekimliği Fakültesi, Klinik Bilimler Bölümü, Protetik Diş Tedavisi Ana Bilim Dalı
dc.description.abstractObjectives: Three-dimensionally (3D) printed resin-based permanent ceramics produced using additive manufacturing have recently gained considerable interest as potential restorative materials for fixed prostheses. However, limited evidence is available regarding their long-term mechanical performance following thermo cycling. The aim of this study was to evaluate the effect of different thermocycling durations on the fracture resistance of 3D-printed bar-type fixed dental prosthesis (FDP) specimens. Methods: Forty-eight bar-shaped, three-unit FDP specimens (5 × 5 × 30 mm), each containing a 4 × 4 mm² U- shaped connector, were fabricated using 3D-printed resin-based permanent ceramic. The specimens were divided into four groups according to ageing duration: unaged, 1, 3, and 12 months of thermocycling. Fracture load (N) data were analysed using non-parametric statistical methods. Group comparisons were performed using the Kruskal–Wallis test with epsilon-squared ( ε ²) effect size estimation, and the Jonckheere–Terpstra test was applied to evaluate the ordered trend across thermocycling durations. Results: Group comparisons showed no statistically significant differences in fracture load among ageing dura tions (Kruskal–Wallis, p = 0.168), with a small effect size ( ε ² = 0.047). However, the Jonckheere–Terpstra test indicated a significant decreasing trend in fracture load with an increase in thermocycling duration (Z = 2.135, p = 0.033). Conclusions: Although no statistically significant group differences were observed, effect size analysis and regression trends indicated that long-term thermocycling may gradually reduce the fracture resistance of 3D- printed resin-based permanent ceramic FDPs. Clinical significance: 3D-printed resin-based permanent ceramic FDPs can provide satisfactory initial fracture resistance; however, the mechanical strength reduction tendency following long-term ageing should be considered for clinical applications over extended durations.
dc.identifier.citationÖzer, S., Atasoyu Akgün, B., & Çakan, U. (2026). Fracture resistance of 3D printed resin-based permanent ceramic fixed dental prostheses after thermocycling. Journal of Dentistry, 174, pp. 1-6. https://doi.org/10.1016/j.jdent.2026.106917
dc.identifier.doi10.1016/j.jdent.2026.106917
dc.identifier.endpage6
dc.identifier.issn0300-5712
dc.identifier.issn1879-176X
dc.identifier.pmidPMID: 42462804
dc.identifier.scopus2-s2.0-105045768296
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttps://doi.org/10.1016/j.jdent.2026.106917
dc.identifier.urihttps://hdl.handle.net/20.500.13055/1598
dc.identifier.volume174
dc.identifier.wosWOS:001834008200001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.indekslendigikaynak.otherSCI-E - Science Citation Index Expanded
dc.institutionauthorÖzer, Safa
dc.institutionauthorAtasoyu Akgün, Begüm
dc.institutionauthorÇakan, Umut
dc.institutionauthorid0000-0002-3724-5656
dc.institutionauthorid0009-0007-6784-328X
dc.institutionauthorid0000-0002-3797-8665
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Dentistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAdditive Manufacturing
dc.subjectResin-Based Permanent Ceramic
dc.subjectFracture Resistance
dc.subjectThermocycling
dc.subject3D-Printed FDPs
dc.titleFracture resistance of 3D printed resin-based permanent ceramic fixed dental prostheses after thermocycling
dc.typeArticle
dspace.entity.typePublication

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