20.500.12556/DiRROS-28221 Eight-year clinical performance of cantilevered zirconia resin-bonded fixed dental prostheses a randomized controlled trial evaluating the effect of nanostructured alumina coating Eight-year clinical performance of cantilevered zirconia resin-bonded fixed dental prostheses: a randomized controlled trial evaluating the effect of nanostructured alumina coating Objective. To evaluate the clinical performance of cantilevered zirconia resin-bonded fixed dental prostheses (RBFDPs) pretreated with nanostructured alumina coating (NAC) as a non-invasive surface modification alternative to airborne-particle abrasion (APA). Materials and Methods. In this prospective, randomized, controlled clinical trial, 57 patients requiring replacement of a maxillary or mandibular incisor received 64 zirconia RBFDPs, randomly assigned to APA (n = 32) or NAC (n = 32) groups. APA surfaces were air-abraded with 50-μm alumina, whereas NAC surfaces were coated with NAC. Restorations were further classified by pontic position. Retention and survival rates were analyzed using Kaplan–Meier and log-rank tests; patient-specific factors were assessed with Mann–Whitney U and Fisher's exact tests (α = 0.05). Debonded surfaces were examined under scanning electron microscopy. Results. Over a mean observation period of 61.4 ± 22.1 months (range, 8.3–97.4 months), six debondings occurred, corresponding to an overall survival rate of 100% and retention rates of 88.4% for NAC and 89.1% for APA (p = 0.99), with no significant differences among pontic groups (p = 0.18). Failures were predominantly adhesive, characterized by partial coating delamination at the NAC–zirconia interface. Conclusions. NAC-pretreated zirconia RBFDPs achieved mid- to long-term retention comparable to APA and represent a minimally invasive, clinically reliable pretreatment alternative. Clinical Significance. NAC provides a minimally invasive zirconia pretreatment, particularly for RBFDPs fabricated from damage-prone translucent zirconia, mitigating mechanical failures while maintaining long-term retention comparable to APA. nanostructured alumina coating true false true Wiley Kanada Angleški jezik Ni določen © 2026 The Author(s). Neznano 2026-03-12 09:38:28 2026-03-12 09:38:29 2026-03-13 03:58:02 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Soavtorja iz Slovenije: Andraž Kocjan, Peter Jevnikar; Opis vira z dne 11. 3. 2026; str. 1-9 iss. Vol. 38 [in press] 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-01-24 2026-02-10 2026-02-27 620.1/.2 1708-8240 10.1111/jerd.70130 271258371 https://onlinelibrary.wiley.com/doi/10.1111/jerd.70130 1 d95ba06f-1dee-11f1-acf8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=41657 RAZ_Malgaj_Tine_2026.pdf RAZ_Malgaj_Tine_2026.pdf 1 279D32C14442C3C02CF1A32239C47008 b1d571a031a0c706b3add10d164b58ccb45643cc522e152656fe79d0ed079fc0 3a3991e9-1def-11f1-acf8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=41658 Institut Jožef Stefan 0 0 0