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Volume 15 , Issue 3
May/June 2002

Pages 267–272

Effect of Different Artificial Aging Conditions on Ceramic- Composite Bond Strength

Stefan Martin Wegner, Dr Med Dent, Winnie Gerdes, Matthias Kern, Dr Med Dent, PhD

PMID: 12066490

Purpose: The purpose of this study was to evaluate the influence of different storage conditions on the bond strength of adhesive bonding systems to yttria–partially stabilized zirconia ceramic. Materials and Methods: Acrylic glass tubes filled with composite resin were bonded to ceramic disks. After sandblasting and ultrasonic cleansing of the ceramic samples, they were bonded using five bonding methods. Samples were tested for tensile bond strength following five different storage conditions: 3 days in distilled water at 37°C, 31 days in distilled water at 37°C, 37,500 thermocycles between 5 and 55°C within 31 days, 150 days in distilled water at 37°C, and 150 days in distilled water with 37,500 thermocycles performed at intervals. Results: Mean resin bond strength values ranged from 7.7 to 41.9 MPa. There were statistically significant differences among groups, as revealed by the Kruskal-Wallis test. Some storage conditions influenced the resin bond strength statistically significantly, as revealed by the Wilcoxon rank sum test modified by Bonferroni-Holm. Conclusion: Thermocycling had a much higher impact on the durability of the resin bond strength to zirconia ceramic than did water storage at a constant temperature. Int J Prosthodont 2002;15:267–272.

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