An in vitro comparative study to evaluate Pull-out bond strength of a fibre-reinforced composite post system luted with two different self-adhesive resin cements

Abstract

This study aimed at evaluating the effects of aExcite DSC bonding agent and two self-adhesive resin cements Panavia F 2.0, Variolink II on the pull-out bond strengths of FRC posts to root canal dentine, and to compare the effects of different cementation thicknesses. Materials and methods: 20 extracted human single canals were selected and root filled. Incisors were embedded in acrylic resin. Trans-lutedfibre posts were luted into root canal using two different types of cements. Root canals of all teeth were prepared with Gates Glidden drill #3. In group 1 post luted with Panavia F 2.0and group 2 with Variolink II. Pull-out evaluation done using a universal testing machine. Specimens were sectioned transversally into slices at coronal, middle and apical regions of the root canal. All specimens will be analyzed by stereomicroscope.Post surface areas covered with cement were measured. Results:Panavia F 2.0 revealed the significantly highest pull-out bond strengths in both groups ( p< 0.05), while variolink II exhibited the significantly lowest pull-out bond strengths in group 2 ( p < 0.05). Conclusions: The different resin cements influenced the pull-out bond strengths, whereas the cement thickness itself was not responsible for any differences.