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*ZIRCONIUM
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Biomaterials & Bioengineering

Influence of Contamination on Zirconia Ceramic Bonding

B. Yang1, S. Wolfart1, M. Scharnberg2, K. Ludwig1, R. Adelung2 and M. Kern1,*

1 Department of Prosthodontics, Propaedeutics and Dental Materials, Christian-Albrechts University at Kiel, Arnold-Heller-Str. 16, 24105 Kiel, Germany; and
2 Multicomponent Materials Institute, Faculty of Engineering, Christian-Albrechts University at Kiel, Kaiser Str. 2, 24143 Kiel, Germany

Correspondence: * corresponding author, mkern{at}proth.uni-kiel.de

The removal of contaminants prior to the bonding of ceramics is critical for the clinical success of a long-term durable resin bond. This study tested the null hypotheses that there are no contaminants on the zirconia ceramic surface left after try-in simulation, and there are no influences of contamination and cleaning methods on zirconia ceramic bonding durability with 10-methacryloyloxy-decyl dihydrogenphosphate-containing composite resins. After saliva immersion and the use of a silicone disclosing agent, airborne-particle-abraded ceramic specimens were cleaned with acetone, 36% phosphoric acid, additional airborne-particle abrasion, or only water spray. Chemical analyses of specimen surfaces were performed by x-ray photoelectron spectroscopy. The influences of contamination and cleaning methods on ceramic bond durability were examined by tensile testing after 3 or 150 days’ water storage with 37,500 thermal cycles. Contamination, existing after try-in simulation as confirmed by chemical analysis, significantly reduced zirconia ceramic-resin bonds. Airborne-particle abrasion may be the most effective cleaning method.

Key Words: zirconia ceramic bonding • contamination • cleaning

Journal of Dental Research, Vol. 86, No. 8, 749-753 (2007)
DOI: 10.1177/154405910708600812
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M. Kern, A. Barloi, and B. Yang
Surface Conditioning Influences Zirconia Ceramic Bonding
Journal of Dental Research, September 1, 2009; 88(9): 817 - 822.
[Abstract] [Full Text] [PDF]