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Influence of enzymatic and chemical degradation on zirconia resin bond strength after different surface treatments.

pmid: 21344831
handle: 11245/1.365066
To investigate the influence of chemical and enzymatic degradation on the stability of zirconia resin bond strength using micro-shear bond strength test.Zirconia discs were airborne particle abraded (SB) or selective infiltration etched (SIE) while no surface treatment served as control. Resin composite (Filtek Z250) microdiscs were bonded to zirconia using self-adhesive universal resin cement (RelyX UniCem). Micro-shear bond strength (microSBS) test was conducted after immersion in the following degrading media: 24 hours and 2 weeks of water storage, and 2 weeks in NaOH, alcohol, or esterase enzyme (n=10).There was a significant influence of the surface finish (P < 0.001, F=154.5), biodegradation medium (P < 0.001, F=52.9), and their interaction (P < 0.001, F=6.0) on zirconia resin bond strength. In general SIE group revealed the highest microSBS values (8.1 - 34.5 MPa) after degradation in different media, followed by SB group (8.7 - 28.5 MPa), while the control group showed significantly lower bond strength (0.4 - 9 MPa).
- Free University of Amsterdam Pure VU Amsterdam Netherlands
- Vrije Universiteit Amsterdam Netherlands
- University of Amsterdam Netherlands
Dental Stress Analysis, Ethanol, Surface Properties, Hydrolysis, Dental Bonding, Esterases, 610, Water, Composite Resins, Dental Porcelain, Resin Cements, Dental Etching, Materials Testing, Sodium Hydroxide, Zirconium, SDG 6 - Clean Water and Sanitation, Shear Strength
Dental Stress Analysis, Ethanol, Surface Properties, Hydrolysis, Dental Bonding, Esterases, 610, Water, Composite Resins, Dental Porcelain, Resin Cements, Dental Etching, Materials Testing, Sodium Hydroxide, Zirconium, SDG 6 - Clean Water and Sanitation, Shear Strength
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