Comparison of shear bond strength and adhesive remnant index score of three different orthodontic adhesive systems with and without primer: an In Vitro Study

Sumayya Shaikh,
Nasim Mirdehghan,
Ajit Kalia,
Juhi Joshi,
Ashwith Hegde,
Azmat Azha Khan*

Abstract

ABSTRACT Aim: The purpose of this study was to evaluate and compare shear bond strength and ARI score of orthodontic brackets bonded with three different orthodontic adhesive systems with and without primer. Objective: To assess and compare the shear bond strength and adhesive remnant index score of three different orthodontic adhesive systems with and without primer. Methods: The samples comprised 150 healthy premolars extracted for orthodontic purposes. All the teeth were mounted on an acrylic block and divided into 5 groups (30 samples in each group). Group A (Transbond XT Primer + Adhesive); Group B (Transbond XT Adhesive); Group C (Bracepaste Primer + Adhesive); Group D (Bracepaste Adhesive); Group E (Aqualine LC Adhesive). Stainless steel (3M Unitek) premolar brackets were used. Once the brackets are bonded. The bonding strength values were measured by a universal testing machine. Results: Distribution of mean values in Intergroup overall, pairwise, comparison of shear bond strength and in Intergroup overall and pairwise comparison of adhesive remnant index scores of three different orthodontic adhesive systems with and without primer, showed a highly statistically significant difference (p<0.001) between the groups as the p<0.05. Conclusions: Group A has got the best and the highest shear bond strength of all the groups. No statistically significant difference was seen between Group A and B; Group C and D have got the least shear bond strength. Group E has got clinically acceptable shear bond strength that is almost equal to that of Group A and B. Group A has got the best and the highest ARI score of 2 and 3 of all the groups. Group C and D have got the highest ARI score of 0 and 1.