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Bond strength of composite luting cement to zirconia ceramic surfaces.
Umeå University, Faculty of Medicine, Odontology, Prosthetic Dentistry.
2005 (English)In: Dental Materials, ISSN 0109-5641, E-ISSN 1879-0097, Vol. 21, no 12, 1158-62 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: To evaluate the bond strength of dental resin agent to zirconia ceramic after surface pre-treatment with different techniques. METHODS: Specimens of hot isostatic pressed yttrium-oxide-partially-stabilized zirconia blocks (ZF) were fabricated (Procera Zircon, Nobel Biocare, Sweden) and compared to glossy dense zirconia blocks (ZG). Four groups of specimens with different surface treatment were prepared. Group I: ZF (n = 5) and ZG (n = 5) without any pre-treatment, Group II: ZF-s (n = 5) and ZG-s (n = 5) treated with silane solution, Group III: ZF-P (n = 10) and ZG-P (n = 10) treated with RF plasma spraying (hexamethyldisiloxane) using a reactor (Plasma Electronic, Germany), Group IV: ZF-p (n = 10) and ZG-p (n = 10) treated with micro pearls of low fusing porcelain (720 degrees C) on the surfaces. Composite cylinders (Charisma, Hereus Kulzer, Dormagen, Germany) were luted with Variolink II (Ivoclar-Vivadent, Schaan, Liechtenstein) to the test specimens. The specimens were then stored in air for 1 h before shear loading in a universal testing machine (LRX, Lloyd Instruments, Farnham, England) until failure. RESULTS: No statistical difference was found between the untreated ZF and ZG specimens (Group I) neither between the specimens treated with silane (Group II). Plasma spraying treatment improved bond strength by a factor of three (p < 0.001). Treatment with low fusing porcelain micro pearls increased the bond strength by a factor of 10 compared to untreated surfaces (p < 0.001). No significant difference was seen between the surfaces treated ZF-p and ZG-p specimens. The thickness of the glass pearls layer did not exceed 5 microm. SEM showed dense grain borders of ZF and a flat glossy texture of ZG. SIGNIFICANCE: Treatment of zirconia ceramic surfaces with plasma spraying or a low fusing porcelain pearl layer significantly increased the bond strength of resin cement to the ceramic surface.

Place, publisher, year, edition, pages
2005. Vol. 21, no 12, 1158-62 p.
Keyword [en]
Dental ceramics; Y-TZP; Composites; Bonding
National Category
Dentistry
Identifiers
URN: urn:nbn:se:umu:diva-19341DOI: 10.1016/j.dental.2005.02.005PubMedID: 16005508OAI: oai:DiVA.org:umu-19341DiVA: diva2:207550
Available from: 2009-03-11 Created: 2009-03-05 Last updated: 2017-12-13

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