Objectives: To compare the mean thickness of hybrid layer by using selfetchadhesive at coronal dentin and root canal dentin with scanning electronic microscope.Study Design: Experimental study. Setting: Liaquat University of Medical & Health Sciences,Jamshoro. Period: July 2009 to 31st December 2009. Material & Methods: Fifty permanentsingle rooted extracted teeth were used in this study. The sample size was divided into twoequal groups of 25 teeth each. Group 1(n=25) self etch adhesive was applied on coronal dentinthen light cured for 10seconds. Group 2(n=25)self etch adhesive to root canal dentin and thenlight cured was applied for 10seconds then 2mm thick layer was placed to adhesive bondedsurfaces of coronal and root canal dentin. Data were analyzed using t-test of significance. p-Value was significant at ≤0.05. Results: The mean ±standard deviation of thickness of hybridlayer was 2.3088 ±1.027 um in coronal dentin; and it was 2.1104 ±1.0316 um in root canaldentin. Conclusion: There is no statistically significant differences in mean thickness of hybridlayer between root canal dentin and coronal dentin with self etch adhesive.
Effect of composite post placement on bonding to root canal dentin using 1-step self-etch dual-cure adhesive with chemical activation mode