The purpose of this in-vitro study was to determine the effects of using a cyanoacrylate adhesive on the shear bond strength of orthodontic brackets. Two groups were performed for the study. In group 1, teeth were etched with 35%% phosphoric acid, and the brackets were then bonded with cyanoacrylate based adhesive, Smartbond (Gestenco International, Gothenburg, Sweden). In group 2, teeth were etched with 35% phosphoric acid, primed and the brackets were bonded with Transbond XT (3M Unitek, Monrovia, Calif.). Between the 2 groups, the ARI scores and the bond strengths showed statistically significant difference (P<0.001). The present findings indicated that the use of the cyanoacrylate adhesive to bond orthodontic brackets to the enamel surface created significantly less bond strength than the resin based bonding agents.

Keywords: Cyanoacrylate, Shear bond strength,