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The effect of nano-structured alumina coating on resin-bond strength to zirconia ceramicsJevnikar, Peter, 1965- ...Objectivenes: The aim of this study was to functionalize the surface of yttriapartially stabilized tetragonal zirconia ceramics (Y-TZP) with a nano-structured alumina coating to improve resin ... bonding. Materials and methods: A total of 120 densely sintered disc-shaped specimens (15.5+/-0.03mm in diameter and 2.6+/-0.03mm thick) were produced from biomedical-grade TZ-3YB-E zirconia powder (Tosoh, Tokyo, Japan), randomly divided into three groups of 40 and subjected to the following surface treatments: AS - as-sintered; APA - airborne-particle abraded; POL - polished. Half of the discs in each group received an alumina coating that was fabricated by exploiting the hydrolysis of aluminium nitride (AlN) powder (groups AS-C, APA-C, POL-C). The coating was characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). The shear-bond strength of the self-etching composite resin (RelyX Unicem, 3M ESPE, USA) was then studied for the coated and uncoated surfaces of the as-sintered, polished and airborne-particle abraded specimens before and after thermocycling (TC). Results: The SEM/TEM analyses revealed that the application of an alumina coating to Y-TZP ceramics created a highly retentive surface for resin penetration. The coating showed good surface coverage and a uniform thickness of 240nm. The resin-bond strength to the groups AS-C, APA-C, POL-C was significantly higher than to the groups AS, APA and POL, both before and after TC (p</=0.05). During TC all the specimens in the POL and AS groups debonded spontaneously. In contrast, the TC did not affect the bond strength of the AS-C, POL-C and APA-C groups. Significance: A non-invasive method has been developed that significantly improves resin-bond strength to Y-TZP ceramics. After surface functionalization the bond survives thermocycling without reduction in strength. (Abs. trunc. at 2000 ch.)Source: Dental materials. - ISSN 0109-5641 (Vol. 26, no. 7, 2010, str. 688-696)Type of material - article, component partPublish date - 2010Language - englishCOBISS.SI-ID - 26997977
Author
Jevnikar, Peter, 1965- |
Krnel, Kristoffer |
Kocjan, Andraž, 1980- |
Funduk, Nenad |
Kosmač, Tomaž, 1948-2022
Topics
Denture, Partial, Fixed, Resin-Bonded |
Zirconium |
Ceramics |
Aluminum Oxide |
Microchemistry |
Microscopy, Electron |
Microscopy, Atomic Force |
Tensile Strength |
Aluminijev oksid |
Zobna proteza delna, fiksna s smolo podložena |
Cirkonij |
Mikrokemija |
Keramika |
Mikroskopija elektronska |
Raztezanje, trdnost |
Mikroskopija, atomska moč
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jevnikar, Peter, 1965- | 13229 |
Krnel, Kristoffer | 17100 |
Kocjan, Andraž, 1980- | 26457 |
Funduk, Nenad | 03369 |
Kosmač, Tomaž, 1948-2022 | 03477 |
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