Comparative Evaluation of Post Operative Sensitivity after Posterior Composite Restorations Using Two Different Bonding Agents (With and Without Nanofillers) in Two Different Age Groups: An in Vivo Study

Abstract Background: Postoperative sensitivity is one of the major problems regarding posterior resin composite restorations that causes patient discomfort and maybe a reason for replacement of the restoration with an additional office time. Aim: The study aimed at evaluating the post operative sensitivity following restoration done using two different bonding agents (with and without nanofillers) for posterior composite restorations and to evaluate the role of nano fillers in reducing postoperative sensitivity in two different age groups. Materials And Methods: Eighty-eight patients requiring class II cavity were included in the study and were randomized in to two groups Group 1 G-Premio bond bonding agent (with nanofiller) and group 2 prime and bond bonding agent (without nano filler) these groups were divided in to sub groups according to age, sub group A (15-25yr) and sub group B (35-45yr). After class II cavity preparation patients were contacted for evaluation of postoperative sensitivity at 1 day, 1 week, 1 month, and 3 months on VAS. The mean VAS score was calculated for all individuals in the treatment group. The data was tabulated in Microsoft excel and analysed with SPSS V.24 software. The continuous variables were presented with mean and standard deviation. The categorical variables were presented with frequency and percentage. Independent t test and Repeated measures ANOVA was used for the statistical analysis. The p value ≤0.05 was considered statistically significant. Results: The group 1, showed a significantly less postoperative sensitivity compared with the group 2, at 1 day, and 1-week evaluation periods. While both groups did not possess any significant difference at 1 month, and 3 months periods. Conclusion: The problem of postoperative sensitivity following resin composite restorations could be reduced by the addition of nanoparticles into dental adhesives and higher POS was seen in younger patients.