Abstract
Background: Root canal irrigation seeks the elimination of bacteria and its products from the root canal. If debris is left in the root canal, it can prohibit adaptation between obturationmaterial and root canal wall. Therefore, it can decrease the sealing ability of obturation material. Purpose: To assess the effectiveness of 2.5% NaOCl and 17% EDTA on the apical sealing ability of resin obturation paste. Method: The roots of 18 human mandibular premolar teeth were selected and the root canal was prepared using a conventional technique. Samples were irrigated with 2.5% NaOCl, and17% EDTA, and sterile aquadest (Aqua Deastilata) as a control group. Samples were filled with gutta-percha and top seal. Samples were soaked in 2% methylene blue for 48 hours to measure the depth of microleakage. Result: The mean apical leakage after irrigation with 2.5% NaOCl; 17% EDTA; and sterile aquadest in the sequence were 0.92 mm; 3.6 mm; and 8.08 mm. Conclusion: 2.5% NaOClhas less depth of microleakage than 17% EDTA. However, the depth of microleakage cannot demonstrate the exact sealing ability of the resin paste due to some factors.
Highlights
Root canal irrigation is one of the important stages of root canal treatment
Data analysis tests used in this study were the Kolmogorov Smirnov normality test, the one-way homogeneity test, the ANOVA difference test, and the Tukey HSD test. This studywas conducted to determine the difference between the effectiveness of 2.5% NaOCl and 17% Ethylene Diamine Tetra Acetic Acid (EDTA) in the sealing ability of resin paste
From the analysis of statistical tests, the results showed that the depth of apical leakage of 2.5% NaOCl irrigation was smaller than aqua dest irrigation
Summary
Root canal irrigation is one of the important stages of root canal treatment. The irrigation procedure aims to clean the root canals, reducing friction between the instrument and the root canal dentine wall, dissolving organic and inorganic tissues, and increasing the antimicrobial effect of mechanical cleansing that has been done before[1]. The cleaning of the root canal is important if there is residual tissue that is still left behind (debris) that can reduce the adaptation of the filling material in the root canal wall. Root canal irrigation materials must have wettability, which increases the ability to dissolve tissue. The concentration of Sodium Hypochlorite (NaOCl) solution used in root canal treatment varies from 0.5 - 5.25 %. If debris is left in the root canal, it can prohibit adaptation between obturation material and root canal wall. It can decrease the sealing ability of obturation material. The depth of microleakage cannot demonstrate the exact sealing ability of the resin paste due to some factors
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