An investigation into the effects of metal primer and surface topography on the tensile bond strength between cobalt chromium alloy and composite resin

David Newsum, Andrzej S. Juszczyk, R K Clark, David Radford

Research output: Contribution to journalArticlepeer-review

Abstract

This study examined the influence of surface preparation and metal primer on the tensile bond strength between cobalt chromium alloy and composite resin. The bond strength between 168 cobalt chromium alloy dumb-bells with one of three test surfaces (beaded, machined or sandblasted) to composite resin were tested. Half of each group were treated with metal primer. The weakest bond strength was produced by the unprimed machined surface, many specimens failing before testing. The metal primer increased the bond strengths of all groups tested. The greatest bond strengths were achieved with the primed beaded and sandblasted surfaces. Within the limits of the study it has been shown that the surface preparation of the cobalt-chromium alloy did influence tensile bond strengths with composite resin and Metal Primer II increased the tensile bond strengths for all groups tested. The sandblasted surface treated with Metal Primer II is recommended for the bonding of composite resin to cobalt chromium alloy.
Original languageEnglish
Pages (from-to)43-48
Number of pages6
JournalEUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY
Volume19
Issue number1
Publication statusPublished - Mar 2011

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