Evaluation of pre-treatment with chlorexidine in the marginal microinfiltration of three different materials: In vitro study

Abstract

Objective: To evaluate the restorations microleakage in three materials with and without 2% chlorhexidine (CHX) pre-treatment and in two storage times.Materials and methods: 120 class V cavities were prepared in healthy bovine incisors, divided according to restorative material: CCR (conventional composite resin); CBFR (composite bulk fill resin) and GIC (resin-reinforced glass ionomer cement) and subdivided according to storage time (7 and 60 days) and pretreatment (with or without CHX), with 10 wells for each subgroup. After the restorative procedure of each subgroup, the teeth were sealed and immersed in 0.5% basic fuchsin buffer for 24 hours. The teeth were sectioned and analyzed for the degree of microleakage.Results: Data were submitted to Kruskall-Wallis analysis, which showed no statistically significant differences between the variables evaluated. Conclusion:Based on the results found, the pre-treatment with chlorhexidine did not interfere in the marginal microleakage scores for the different storage times and in the different types of materials used.