Evaluation of Microleakage and Shear Bond Strength of Two Different Calcium-based Silicate Indirect Pulp Capping Agents When Restored with Glass Ionomer Cement and Composite Resin Restoration: A Comparative In Vitro Study.

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Indirect pulp therapy (IPT) is a conservative treatment approach that leaves the deepest caries adjacent to the pulp undisturbed in an effort to avoid pulp exposure. The result of IPT is primarily dependent on the biocompatibility, sealing capacity, adaptability of the overlying restoration to underlying dentin, and strength of the liner material utilized. To evaluate shear bond strength (SBS) and microleakage of mineral trioxide aggregate (e-MTA) and biodentine when restored with glass ionomer cement (GIC) and composite resin after their initial set time. Around 40 extracted caries-free permanent molars were randomly divided into two groups according to the liner material used (group I (e-MTA) and group II-biodentine). Each group was further divided into subgroups A1, A2, B1, and B2, where A1 and B1 received GIC and A2 and B2 received composite resin restoration after the initial set time. Half of the samples from each subgroup were allotted to two test groups of SBS and microleakage evaluation. The SBS was evaluated using a universal testing machine, and microleakage was assessed using a dye penetration test. One-way analysis of variance (ANOVA) was used for intergroup comparison, and the paired sample t-test was used for intragroup comparison. Categorical data were analyzed using a nonparametric test at the 5% level of significance using Statistical Package for the Social Sciences (SPSS) version 21 for Windows. A statistically significant difference (p = 0.001) was found in SBS between the group (e-MTA) + composite and biodentine + composite, where the latter group showed the highest SBS. Microleakage was highest in the group (e-MTA) + GIC (0.6 ± 0.894) and lowest in the group biodentine + composite (0.2 ± 0.447). However, no statistically significant difference was found in microleakage among all four groups. Within the constraints of this study, biodentine can be suggested as the pulp capping agent to be restored with composite resin restoration after its initial set time. Patel C, Patel M, Panchal M, et al. Evaluation of Microleakage and Shear Bond Strength of Two Different Calcium-based Silicate Indirect Pulp Capping Agents When Restored with Glass Ionomer Cement and Composite Resin Restoration: A Comparative In Vitro Study. Int J Clin Pediatr Dent 2024;17(9):1035-1040.