Aim: To determine the micro leakage of fourth and fifth generation dentin bonding agents.
Materials and Methods: Standardized Class V cavities were prepared on cervical area of facial surfaces of seventy-five human premolars. According to the generation of bonding agent used, the samples were divided into three groups. Fourth generation bonding agent (Scotch Bond Multipurpose) was used in group A, Fifth generation bonding agent (Single Bond) was used in group B and no bonding agent was used in group C. The samples were restored with hybrid composite and underwent dye penetration test. Samples were sectioned and evaluated under 45X stereomicroscope. Statistical analysis using independent sample t-test. The significance level was at P < 0.001.
Results: The results of present study depicted that Group A in which Scotch Bond Multipurpose dentin bonding agent was applied showed amicroleakage mean of 2.12 and standard deviation of 1.2356.The teeth in which Single Bond adhesive was applied showed a mean of 1.6 and standard deviation of 1.3844. The specimens on which dentin bonding agent was not used showed the highest mean 3.6 and standard deviation of 1.7321. On comparison of groups statistical difference was seen among the groups.
Conclusion: There was no statistical difference in between the micro leakage exhibited by fourth and fifth generation dentin bonding agents, both performed equally well. Also use of dentin bonding agent significantly reduce the micro leakage.
