A Comparative Study on the Fracture Resistance of CAD/CAM-Fabricated Single-Piece Post-Crowns

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dc.contributor.authorErdem, Ali
dc.contributor.authorBilgin, Mehmet Selim
dc.contributor.authorErsoy, Ibrahim
dc.contributor.authorDilber, Erhan
dc.contributor.authorIsik, Ebru Nur
dc.contributor.authorEyuboglu, Tan Firat
dc.contributor.authorOzcan, Mutlu
dc.date.accessioned2026-01-24T12:30:49Z
dc.date.available2026-01-24T12:30:49Z
dc.date.issued2025
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractObjectives: Recently, CAD/CAM materials have become popular in dental clinics; however, information about their fracture resistance as post-crowns remains limited. This study compared the initial fracture resistance of potential single-piece post-crown materials made with CAD/CAM milling to sound teeth. Materials and Methods: Fifty freshly extracted, non-carious human central incisor teeth underwent endodontic treatment. The roots were then randomly divided into five groups based on the post systems: the control group included teeth filled only with gutta-percha. Monoblock post-crowns were made using four different systems for the other groups: LDS (IPS e.max CAD (R), lithium disilicate glass-ceramic), YTZP (inCoris ZI (R), Yttrium tetragonal zirconia polycrystal), RNC (Lava Ultimate (R), resin-based nanoceramic), and PICN (VITA Enamic (R), polymer-infiltrated ceramic network). The post-crowns were cemented with resin cement and tested with a universal testing machine at a crosshead speed of 1.0 mm/min. Data analysis used one-way ANOVA and multiple comparison post-hoc Tukey tests (alpha = 0.05). Results: Significant differences were found between the groups (p < 0.001). The control group exhibited the highest fracture resistance (749.25 +/- 225.02 N). YTZP showed similar resistance to the control (p = 0.99) and LDS (447.28 +/- 168.72 N, p = 0.081), but was significantly higher than RNC (343.79 +/- 157.08 N, p = 0.0051) and PICN (348.78 +/- 157.44 N, p = 0.0059). LDS, RNC, and PICN did not differ significantly. YTZP experienced more non-repairable fractures (5/10), while PICN predominantly failed in a repairable manner (9/10). Conclusions: All CAD/CAM post-crowns exceeded functional loads for the anterior region. YTZP and LDS demonstrated greater strength, whereas PICN and RNC, despite being weaker, favored repairable failures-highlighting the importance of balancing strength and clinical manageability.
dc.description.sponsorshipThe authors received no specific funding for this study. Funding Source: Medline
dc.identifier.doi10.1002/cre2.70247
dc.identifier.issn2057-4347
dc.identifier.issue6
dc.identifier.pmid41398996
dc.identifier.scopus2-s2.0-105024803268
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1002/cre2.70247
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5449
dc.identifier.volume11
dc.identifier.wosWOS:001640564000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofClinical and Experimental Dental Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260121
dc.subjectCAD/CAM
dc.subjectdental materials
dc.subjectfracture resistance
dc.subjectpolymer-infiltrated ceramic network
dc.subjectpost-crown
dc.subjectYttrium tetragonal zirconia polycrystal
dc.titleA Comparative Study on the Fracture Resistance of CAD/CAM-Fabricated Single-Piece Post-Crowns
dc.typeArticle

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