to evaluate the interactive effects of different self - adhesive resin cements and tribochemical treatment on bond strength to zirconia .
the following self - adhesive resin cements for bonding two zirconia blocks were evaluated : maxcem ( ma ) , smartcem ( sm ) , rely x unicem aplicap ( un ) , breeze ( br ) , biscem ( bi ) , set ( se ) , and clearfil sa luting ( cl ) . the specimens were grouped according to conditioning as follows : group 1 , polishing with 600 grit polishing paper ; group 2 , silica coating with 110 m al2o3 particles which modified with silica ; and , group 3 , tribochemical treatment - silica coating + silanization .
specimens were stored in distilled water at 37c for 24 hours before testing shear bond strength .
silica coating and tribochemical treatment significantly increased the bond strength of the ma , un , br , bi , se and cl to zirconia compared to # 600 polishing . for both # 600 polished and silica coating treatments , mdp - containing self - adhesive resin cement cl had the highest bond strengths to zirconia .
applying silica coating and tribochemical treatment improved the bond strength of self - adhesive resin cement to zirconia , especially for cl .
 aimto evaluate the interactive effects of different self - adhesive resin cements and tribochemical treatment on bond strength to zirconia.methodologythe following self - adhesive resin cements for bonding two zirconia blocks were evaluated : maxcem ( ma ) , smartcem ( sm ) , rely x unicem aplicap ( un ) , breeze ( br ) , biscem ( bi ) , set ( se ) , and clearfil sa luting ( cl ) . the specimens were grouped according to conditioning as follows : group 1 , polishing with 600 grit polishing paper ; group 2 , silica coating with 110 m al2o3 particles which modified with silica ; and , group 3 , tribochemical treatment - silica coating + silanization . 
 specimens were stored in distilled water at 37c for 24 hours before testing shear bond strength.resultssilica coating and tribochemical treatment significantly increased the bond strength of the ma , un , br , bi , se and cl to zirconia compared to # 600 polishing . for both # 600 polished and silica coating treatments , mdp - containing self - adhesive resin cement cl had the highest bond strengths to zirconia.conclusionapplying silica coating and tribochemical treatment improved the bond strength of self - adhesive resin cement to zirconia , especially for cl . 