The shear bond strength of dental ceramic (Dicor, Optec) and luting composite (Dicor, Optec, Dual-cement) bonded to dentin and to etched enamel was evaluated. The mean bond strength was 23.8 N/mm2 to enamel and 0.60 N/mm2 to dentin. Using the Optec dentinal bonding agents increased these values to 2.00 N/mm2.