Effect of surface treatments of porcelain on the shear bond strength of applied dual-cured cement

The effect of different surface treatments of porcelain on the shear bond strength of the applied dual-cured cement was examined. Acid etching with hydrofluoric acid, roughening the porcelain surface by means of grinding with a diamond bur, and the use of silane coupling agent alone and with combinations of these surface treatments were used. Silane treatment resulted in a shear bond strength on roughened porcelain surfaces that was statistically significantly greater than all other treatment groups ( p < 0.05). However the use of two mechanical bond systems together with a chemical bond did not improve the shear bond strength.