Efecto de agentes hemostáticos en la capacidad de sellado marginal de restauraciones clase 5.

Abstract

Restorations longevity may be affected by contamination during the adhesion process. This study aimed to evaluate hemostatic agents’ contamination effect on the marginal sealing capability of two restorative materials. Materials and methods: 30 extracted third molars were randomly distributed into 6 groups for an in vitro microleakage effect: G1 Composite resin (CR) (Te-Econom Plus® + Te-Econom Bond® Ivoclar Vivadent®/ Schaan, Liechtenstein), G2glass ionomer + polyacrylic acid (GI) (Riva Light®, SDI®/®/Bayswater, VIC, Australia + Fuji II®, GC®/Tokyo, Japan), G3 CR+ferric sulfate (ferricsulfate al 20%, ViscoStat®, Ultradent Products Inc.®/South Jordan, USA), G4 CR+aluminum chloride (ViscoStat® Clear, Ultradent Products Inc.®/South Jordan, USA), G5GI+ferric sulfate, G6GI+aluminum chloride. Class V cavities were prepared and restored on vestibular and lingual cervical areas involving enamel and dentine. Samples were stored at 37 oC for 10 days and then immersed in 0.5% methylene blue for 24 hours. Lastly, samples were sectioned vestibule-lingual and the exposed microleakage scanned and measured in µm. One-way ANOVA at three levels (Group and location) was used at a=0.05.Results: Groups microleakage mean (SD) were: G2= 769.5 (537.3) µm; G5= 690 (510) µm; G4=535 (732.2) µm; G6=530 (448) µm; G3 487.5 (722.9) µm, higher than G1 177.5 (509.6) µm, (p= 0.001). Being cementum/dentin=665 (708.5) µm greater than enamel= 395.83 (456,8) µm (p= 0,001). Intersection group-location was different at p= 0,001; since G5 and G6 (both contaminated) improved sealing capability compared to G1. Conclusion: Under the conditions of the present study, ferric sulfate and aluminum chloride negatively affect composite resin´s sealing capability at the cementum/dentin level, but not the one of glass ionomer at any location.