Comparison of Shear Bond Strength and Adhesive Remnant Index of Metal Brackets Bonded with Ortho-Force, Transbond XT and Resilience Composites

In orthodontic treatment a proper bond is essential between the enamel and the bracket. Evaluation of the efficacy of different adhesives for bonding orthodontic brackets to enamel has yielded different results. This study aimed to compare the shear bond strength and adhesive remnant index (ARI) of metal brackets bonded by Transbond XT, Ortho-Force and Resilience composites.
Sixty extracted intact upper maxillary first premolars were selected for the purpose of this in vitro study. The teeth were randomly divided into three groups (n = 20). The teeth were bonded with were bonded with Transbond XT, Resilience and Ortho-Force composites in groups 1, 2 and 3, respectively. After 24 hours, shear bond strength test was conducted at a crosshead speed of 0.05 mm/min. ARI scores were evaluated under a stereomicroscope. The results of shear bond strength test were analyzed with ANOVA and Tukey tests. ARI results were analyzed with chi-squared test (α = 0.05).
Shear bond strengths were significantly different between the three groups (p value Although the mean shear bond strength of Ortho-Force composite was less than the two other composites, it is still clinically acceptable.