Marginal gap repair with flowable resin-based composites.

This study was designed to test the hypothesis that the flowable/dentin interface has the weakest bond and highest frequency of failure when a resin-based composite is repaired using a flowable composite. Comparing three specific groups--dentin, flowable composite, and hybrid composite-under the Kruskal-Wallis test showed that the mean bond strength values at the flowable/dentin interface and within the dentin were significantly lower than those at the hybrid/flowable interface and within the flowable resin. Dentin near the pulp chamber yielded consistently lower bond strength values than dentin located at the dentino-enamel junction. Bonding at the flowable resin/dentin interface showed the weakest bond and highest frequency of failure.

Related Organizations

University of Florida
United States

Keywords

Dental Stress Analysis, Analysis of Variance, Dental Prosthesis Repair, Dental Bonding, Dental Marginal Adaptation, Composite Resins, Phase Transition, Dentin-Bonding Agents, Tensile Strength, Dentin, Materials Testing, Retreatment, Humans, Bisphenol A-Glycidyl Methacrylate, Dental Restoration Failure, Dental Restoration, Permanent, Shear Strength

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