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This study aimed to compare apical microleakage using tooth clearing method between two softened core obturation techniques which are carrier based gutta percha and continuous wave. Samples are maxillary first incisors, with a single root canal. They are devided into three groups of 9 each randomly. The first group is carrier based gutta percha, the second is continuous wave, and the third is lateral condensation as positive control. The teeth were decoronated at the cementoenamel junction, prepared with crown down pressureless technique, and obturated according their group.  All the samples were coated with nail polish except for 2 mm from the apical, and then placed in China Ink for 7 days. After that, the polish were removed and the samples undergone tooth clearing procedure. When the samples had been transparant, they were observed using microscop. Data were collected and analyzed using Anova and Tukey’s post hoc test. The study showed that mean of apical microleakage from continuous wave technique (0.256 + 0.133) is less than from carrier based gutta percha (0.433 + 0.173). As the conclusion, there is a significant diffrence (p:0.034) of apical microleakage between continuous wave and carrier based gutta percha (p<0.05).

Assessment of apical microleakage using tooth clearing method between two softened core obturation techniques