Objective To evaluate microleakage of total-and self-etch system combining with resin composites in rehabilitating flared root canal.

Objective: to evaluate the influence of three dentin desensitizers on shear bond strengths of a total-etch adhesive to dentin surfaces.

The self-adhesive resin cement and self-etching adhesive system may gain higher bonding strength than total-etching adhesive system.