Bond Strength of Acrylic Resin to Cobalt-Chromium Alloy Treated with the Silicoater MD and Kevloc Systems (Résistance d’adhésion de la résine acrylique à l’alliage cobalt-chrome traité avec les systèmes Silicoater MD et Kevloc)

Introduction The bond strength of the resinmetal interface of a prosthesis is a key factor in determining the serviceability of that prosthesis. Separation of the resin from the metal due to a compromised or weak bond can lead to microleakage, discoloration and total separation of the resin from the metal.1,2 Resin-metal bonding systems as an addition to or replacement for conventional mechanical retentive elements aim at reducing the incidence of failure at the resin-metal interface. An optimum resin-metal bonding system would include a simple procedure producing maximum retention and high, consistent bond-strength values.3 Mechanical retentive elements such as latticework, mesh, beads and posts are incorporated into the design of cast frameworks to retain the acrylic resin matrix. Additional design elements such as external and internal finish lines and tissue relief are used to ensure a sufficient bulk of acrylic for strength. Macromechanical retention may aa a aa aa a a a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a aaa a aa aaa a aa a aa a aa a a a a a a