European Journal of Prosthodontics and Restorative Dentistry

The Bond Strength of Resin Bonded Bridge Retainers to Abutments of Differing Proportions of Enamel and Composite

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Cover Date

March 2015

Print ISSN

0965-7452

Vol

23

Issue

1

Abstract

doi: 10.1922/EJPRD_1371Durey07

The Bond Strength of Resin Bonded Bridge Retainers to Abutments of Differing Proportions of Enamel and Composite
Kathryn Durey, Brian Nattress

Abstract:
Four groups of specimens were constructed using bovine enamel and composite resin. After a period of ageing, the specimens were roughened and acid etched before they were cemented to air abraded base metal alloy beams with a universal resin cement. After further ageing, tensile peel testing was carried out using a Universal Testing Machine. The force required to produce failure increased as the amount of composite resin on the bonding surface of the abutment increased. This difference reached statistical significance (p<0.5) when the abutments contained >50% composite. The mode of failure was mixed on the majority of retainers. Within the limitations of the study, findings suggest that RBB retainers can be cemented to abutments restored with composite resin without a reduction in bond strength.
Keywords:
Resin Bonded Bridges, Composite Resin, Enamel, Bond Strength