Eficácia do selamento provisório de três materiais restauradores ante a solução de nitrato de prata a 50% Effectiveness of the temporary sealing of three restorative materials to the 50% silver nitrate solution

Introduction and objective: The aim of this study was to analyze three temporary restorative materials – Coltosol®, Cavit® W and Cimpat® –, concerning their sealing capacity to the 50% silver nitrate solution. Material and methods: 30 samples were divided into 3 experimental groups. Inside of each sample there was an antibiogram disc with 5 mm of diameter and 1 mm of depth, with 4 mm of one of the three sealing materials on it. After restorations, the samples were inserted into recipients with 50% silver nitrate solution, which were taken to the heater at 37oC, where they remained for 7 days. Following this period and with the restorative materials removed, antibiogram disc analyses were performed, which were scored according to the leakage. Results and conclusion: Data obtained were submitted to the Kruskal-Wallis non-parametric statistical test, with a level of significance of 5%. Results showed that Cimpat® had the greatest levels of leakage, while Coltosol® and Cavit® W did not differ between themselves (p > 0.05).