Effect of aluminum chloride hemostatic agent on microleakage of gingival margin of composite class V cavities bonded with all-in-one adhesive

Abstract

Bonding of composite resins to dentin remains a variable and technique sensitive procedure. One of the effective factors on composite bonding is contamination of blood and sulcular fluids. One of the procedures to control bleeding and sulcular fluids is the use of hemostatic agents. Since hemostatic agents can cause changes on enamel and dentin surfaces and affect composite bonding, the aim of this study was to evaluate the effect of aluminum chloride hemostatic agent on microleakage of gingival margin of composite class V cavities bonded with all-in-one adhesive. Methods and materials: In buccal surfaces of 60 sound bovine permanent incisors class V cavities (3 3 2 mm) were prepared. The teeth were randomly divided into two groups of 30. In group 1 the cavities were restored without hemostatic agent application, while in the second group they were restored subsequent to hemostatic agent application. In order to restore the teeth, in both groups all-in-one adhesive resin and Z250 composite (using incremental technique) were used. Subsequent to finishing and polishing, the samples were subjected to thermocycling (for 500 cycles between 52C and 552C), then they were immersed in 2% basic fuchsin solution for 24 hours. Subsequent to sectioning, the microleakage of the samples was evaluated under stereomicroscope. Non-parametric Man-Whithney U test was used to compare the gingival microleakage of two groups. In this study P<0.05 was considered significant. Results: There were statistically significant differences in microleakage scores between two groups (p<0.0005). Conclusion: Contamination with aluminum chloride hemostatic agent in composite class V cavities restored with an all-in-one adhesive resin dramatically increased the gingival microleakage.