20.500.12556/RUL-184596 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. airborne-particle abrasion bond strength nanostructured alumina coating randomized controlled clinical trial resin-bonded fixeddental prostheses zirc true false true Angleški jezik Ni določen Članek v reviji 2026-07-10 11:14:40 2026-07-10 11:14:46 2026-07-23 04:10:01 0000-00-00 00:00:00 2026 0 0 Str. 1386-1394 iss. 7 Vol. 38 Jul. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1/.2 1708-8240 10.1111/jerd.70130 271258371 RAZ_Malgaj_Tine_2026.pdf RAZ_Malgaj_Tine_2026.pdf 1 1BF08E9353023C4A435A5A511E1737D0 9ae7996100e61b7c18f986a032965854ae9cc39fc29f224bb623224cb4b3d2ec 84b6ef65-858e-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243118 https://onlinelibrary.wiley.com/doi/10.1111/jerd.70130 1 ab17c7ab-7c3f-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237508 Medicinska fakulteta 0 0 0