Push-out Bond Strength Of Four Different  Self-adhesive Resin Cement

Method: 40 extracted for ortodontical reason human premolars were used, divided into 4 groups after a proper rooth canal treatment was made. DT Light Post Illusion^® X-RO #1 fiber glass posts were used. Posts were cemented using one of the four self-etching adhesive cement in ten teeth per group: G1 FujiCem, G2 RelyX U200, G3 RelyX U100 and G4 SeT PP. After cemented according to the manufacturer instructions, 5 1-mm thick slices of the filled root were obtained from each sample. The post in the slices were tested under push-out in a universal testing machine (shimadzu AGS-J) the load needed to remove the post was written and transformed to MPa according to each sample measurements. The data resulting was processed in sthatgraphics using ANOVA.  

Result: The highest push-out strength were obtained with G2 (4.60 MPa), followed by G4 (3.98 MPa). The lowest mean values were recorded with G1 (2.37 MPa), and G3 (2.12 MPa). 

Conclusion: Under the conditions of this study, there was significant difference between the mean push out bond strength of G2 and the mean push out bond strength of G1 and G3.