Hybrid layer of etch and rinse versus self-etching adhesive systems: A comparative study

Abstract

Aim: This study is to evaluate the effectiveness in the formation of resin tags, and hybrid layers of self-etching adhesives and total etch adhesives of total etch and two self-etching bonding systems to dentine surface by scanning electron microscopic study. The etch and rinse system shows thick hybrid layer than self-etching systems. Result: The resin tags formation in etch and rinse system is much longer than self-etch sixth and seventh generation bonding systems and bonding interface is more uniform in two self-etching bonding systems than total etch bonding resin supporting null hypotheses. Conclusion: Self-etching bonding agents containing acidic monomer is able to penetrate dissolve the smear layer to form a more uniform hybrid layer. However, the long-term durability of self-etching bonding system should be evaluated.