The objective of this study was to evaluate the effect of combining implant and abutment materials on wear and particle release in a dynamical loading setup.

The aim of the study was to investigate the metal ion release, surface roughness and cytoxicity for Co–Cr alloys produced by different manufacturing techniques before and after heat treatment. In addition, to evaluate if the combination of materials affects the ion release.

Cobalt-chromium alloys are now commonly used for fixed dentures and single crowns. The alloys are attractive because they are light and provide high stiffness due to their high elastic modulus (Young’s modulus) compared with noble metal alloys, pure titanium or titanium alloys.

Over and above titaniums’s acknowledged biological and biochemical compatibility with the body, the biomechanical compatibility can be improved through alloying and heat treatment that reduce its inherent stiffness, bringing it closer to the stiffness of tooth structure, while increasing its strength.

Three bifunctional silane coupling agent monomers and their blends with a cross-linking silane were investigated as six experimental adhesion-promoters in vitro. Three organosilane monomers, 3-methacryloxypropyltrimethoxysilane, styrylethyltrimethoxysilane, and 3-(N-allylamino)propyltrimethoxysilane, were prepared as 1% (v/v) primers and also blended with a cross-linking silane, 1,2-bis-(triethoxysilyl)ethane at 0.5% (v/v), in a 95:5 solution of ethanol in deionized water.