Evaluation of composite restoration in class II cavities of primary molars using two different types of adhesive systems

Abstract Aim The purpose of the study was to evaluate composite filling after using two different types of bonding agents in class II cavities of primary molar teeth. Patients and methods Twenty children from both sexes aged from 5 to 9 years old were included in the study. The selected children were divided into two groups: group I: Seventh generation (Plafique bond) was used on one side. Group II: Eighth generation (Plafique universal bond) was used on the other side. Then restored with omnichroma composite resin material. Follow-up was carried out at 3, 6, and 9 months for clinical evaluation. Laboratory evaluation for human extracted molars was examined for microleakage. Results Clinically, it was revealed that there was no significant difference between retention of seventh and eighth generation at different follow-up periods, while regarding marginal integrity, there was a significant difference between both groups. While laboratory evaluation also showed that the dye penetration for marginal microleakage was significantly higher in group I than in group II. Conclusion Both the seventh and eighth generations of adhesive systems provide adequate retention for composite restorations in class II cavities of primary molars. However, the eighth generation dentin bonding agent demonstrated superior marginal integrity in both clinical and laboratory findings.