Shear bond strength, microleakage and scanning electron microscopy study of the Clearfil Liner Bond System.

: Various adhesive systems have been introduced for enamel and dentine bonding and one of the newer systems available recently is the Clearfil Liner Bond System. This investigation was to determine the shear bond strength, evaluate the microleakage and conduct SEM examinations of this new bond system. The results showed it was possible to obtain a mean shear bond strength of 17.45 MPa to human dentine. Microleakage was minimal at the cementum/dentine margin and no microleakage was observed at the enamel margin of resin restorations placed with the system. SEM examinations revealed minimal to significant resin penetration into dentinal tubules.