Bonding strength between the post and the resin cement before and after thermo-cycling.

(): SD. For each horizontal row in the mean value of the bond strength: superscript values with different numbers indicate statistically significant difference (P<0.05). For each vertical column in the mean value of the bond strength: subscript characters with same letters (a, b, c, d, e) indicate no statistically significant difference (P>0.05). The sample size for each experimental group was 15. Bonding strength between the post and the resin cement before and after thermo-cycling.