20.500.12556/RUL-184435 Effects of airborne-particle abrasion and zirconia composition on porcelain–zirconia bond strength Porcelain chipping in zirconia-based dental restorations remains a major clinical complication. This study evaluated the effects of airborne-particle abrasion (APA) and yttria content in zirconia on porcelain–zirconia bond strength. Six groups were tested: low-translucency (3Y-TZP) and high-translucency zirconia (4Y-TZP), each with or without APA, and APA-treated Co–Cr and Ti–6Al–4V alloys as metal–ceramic references. Bond strength was assessed using the Schwickerath test. Interfacial structure and mechanical properties were analyzed by scanning and transmission electron microscopy and nanoindentation. APA significantly increased zirconia surface roughness but did not improve bond strength. Zirconia composition had no effect on porcelain bonding. Bond strength values for porcelain-zirconia (34.0–40.6 MPa) were comparable to those of metal–ceramic systems, lower than Co–Cr (45.5 MPa) but similar to Ti–6Al–4V (37.3 MPa). Microscopy and nanoindentation revealed sharp zirconia–porcelain interfaces with pronounced mechanical mismatch and yttrium segregation at grain boundaries. airborne-particle abrasion Yttria-stabilized zirconia (Y-TZP) zirconia-based ceramics zrak abrazija delcev keramika cirkonij true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-07 12:18:56 2026-07-07 12:19:01 2026-07-08 04:12:19 0000-00-00 00:00:00 2026 0 0 10 str. art. 100980 Vol. 26 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1/.2 2666-5395 10.1016/j.oceram.2026.100980 278157059 RAZ_Antanasova_Maja_2026.pdf RAZ_Antanasova_Maja_2026.pdf 1 21046B4FDCBA6FE4AF83D51A3C9DBD68 cc7762346fc107b6d9918a405497ffda3340bf49eb653263973233088005b8b8 54a7b370-79ed-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237255 https://www.sciencedirect.com/science/article/pii/S2666539526000763 1 286867d8-79ed-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237253 Medicinska fakulteta 0 0 0