Assessment of the efficacy of three different techniques for removal of smear layer combined with the use of Apexit Plus Sealer in preventing apical dye penetration (in vitro study)

Miwan Salahalddin A. Alrahman; Gollshang ahmad mhammed; Tavga Mustafa faris

Volume : IV, Issue : X, October - 2015

Assessment of the efficacy of three different techniques for removal of smear layer combined with the use of Apexit Plus Sealer in preventing apical dye penetration (in vitro study)

Miwan Salahalddin A. Alrahman, Gollshang Ahmad Mhammed, Tavga Mustafa Faris

Abstract :

objectives: The purpose of this study is to evaluate the apical leakage of root canal sealers: (Apexit plus) in combination with three different techniques for removal of smear layer: (irrigation the instrumented root canal with 2.5% NaOCl alone, irrigation with 17% EDTA followed by 2.5% NaOCl, and application of Nd: YAG laser) by using apical dye penetration measurement. Method : Thirty freshly extracted human teeth with single, sound root and straight one canal were collected. The step–back preparation technique of the roots canals instrumentation was performed with K–type files. Specimens were randomly divided into three groups (n=10) according to the techniques that used to remove the smear layer. Then the teeth obturated with root canal sealers (Apexit plus) and gutta percha using cold lateral condensation technique. All specimens immersed in 2% Methylene blue dye solution for 72 hours, after cleaning the root surface from the dye, all roots were sectioned longitudinally and the depth of dye penetration was measured by grid scale disc under a stereomicroscope. Results : The results showed that the lowest mean apical leakage was obtained by using (17% EDTA followed by 2.5% NaOCl), then by (Nd: YAG laser) treatment, while the highest mean leakage is obtained by (2.5% NaOCl alone). Conclusion: The lowest mean apical leakage was obtained by using (17% EDTA followed by 2.5% NaOCl), while the highest mean leakage was obtained by (2.5% NaOCl alone),