Comparative analysis of bond strength and microleakage of newer generation bonding agents to enamel and dentin: An in vitro study

摘要

Aims: This study aims to evaluatethe bond strength (BS)and microleakage(ML) ofthe newer bonding agents to enameland dentin. Objective: (1) To analyzethe BS between self-etch and total-etch adhesives. (2) To analyzethe depth ofML between self-etch and total-etch adhesives. Materials andMethods: Sixty mandibular premolars werefabricated and randomly divided into three groups:Group I (n = 20)-bonded with self-etch adhesive nanohybrid, Group II (n = 20) with total-etch adhesive micro hybrid and Group III (n = 20) with total-etch adhesive nanocomposite. Teflon ringmolds were used to makecompositeresin cylinders bonded to the buccalsurface. Class II box cavitywas prepared on thesamples' proximalsurfaceand condensed with compositeresinwith each group's specific bonding protocol. Shear BS and ML testingwereconducted,and dataanalyzed. Statistical Analysis: Kruskal–Wallisanalysis was doneto statistically differentiate the BS and ML between thethreeexperimental groups; the P 0.05, itshowed astatistically significant difference. Intergroup comparisonwas made using the Mann– WhitneyUtest. Conclusions: Within this study's limitation, resin bonded with self-etchG-Premio Bond used in selectiveetch techniqueshowed the highest BS and resistanceto ML.