Effect of polydopamine surface treatment on the mechanical properties of zirconia and resin occlusal veneers fabricated using additive and subtractive manufacturing: An in vitro study

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dc.authoridhttps://orcid.org/0000-0001-9321-1031
dc.authoridhttps://orcid.org/0009-0004-4149-2061
dc.authoridhttps://orcid.org/0000-0001-6963-8289
dc.contributor.authorSasany, Rafat
dc.contributor.authorUçar, Sultan Merve
dc.contributor.authorMosaddad, Seyed Ali
dc.contributor.authorAlonso, Veronica Rodriguez
dc.date.accessioned2025-06-17T13:14:08Z
dc.date.available2025-06-17T13:14:08Z
dc.date.issued2025
dc.departmentDiş Hekimliği Fakültesi
dc.description.abstractObjectives: To evaluate the influence of polydopamine (PDA) treatment on bond strength, fracture, and wear resistance of occlusal veneers (OVs) fabricated using additive (AM) and subtractive manufacturing (SM) techniques. Methods: Three hundred twenty 0.5 mm-thick OVs were fabricated through AM and SM and from four groups of materials (n = 80): AM ceramic-filled resin (AM-C), AM zirconia (AM-Z), SM nano-ceramic resin (SM-C), and SM zirconia (SM-Z). Each group was further divided into PDA-treated and untreated subgroups (n = 40). Specimens were cemented onto resin dies using self-curing resin cement (Multilink N; Ivoclar Vivadent) and subjected to five million chewing cycles with thermal cycling. Fracture and wear resistance were assessed using a load-tofailure test and 3D surface analysis, respectively (n = 20). Additionally, bond strength was evaluated using a pull-out test (n = 20). Data were analyzed using three-way ANOVA to assess the main and interaction effects of material, manufacturing technique, and PDA treatment (α=0.05). Results: Significant main effects of manufacturing technique, material type, and PDA treatment were found for all outcomes (p<.001), along with significant manufacturing × PDA interactions. PDA notably improved fracture resistance and bond strength in AM-Z and AM-C (p<.05), but had minimal effect on SM groups. Wear was significantly reduced in AM groups following PDA (p<.001), while SM-C showed a slight increase (p=.021). Among all groups, untreated AM-C demonstrated the weakest overall mechanical performance. Conclusions: PDA treatment enhanced fracture and bond strength in AM materials, with limited effect on SM ceramics. Milled zirconia showed the best overall performance, while untreated AM-C consistently performed the worst. Clinical Relevance: Polydopamine surface treatment enhances the mechanical performance of occlusal veneers fabricated by additive manufacturing, particularly improving bond strength and fracture resistance. This approach may increase the clinical reliability of 3D-printed restorations, especially in thin, conservative designs.
dc.identifier.doi10.1016/j.jdent.2025.105805
dc.identifier.issn0300-5712
dc.identifier.issn1879-176X
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://hdl.handle.net/11363/9934
dc.identifier.volume159
dc.identifier.wos001503120500007
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorUçar, Sultan Merve
dc.institutionauthoridhttps://orcid.org/0009-0004-4149-2061
dc.language.isoen
dc.publisherELSEVIER SCI LTD, 125 London Wall, London EC2Y 5AS, ENGLAND
dc.relation.ispartofJOURNAL OF DENTISTRY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectDental Veneers
dc.subject3D Printing
dc.subjectCAD-CAM
dc.subjectPolydopamine
dc.subjectFracture Strength
dc.subjectDental Restoration Wear
dc.subjectFatigue
dc.titleEffect of polydopamine surface treatment on the mechanical properties of zirconia and resin occlusal veneers fabricated using additive and subtractive manufacturing: An in vitro study
dc.typeArticle

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