Original paper

Author

Narimatsu DK, Maekawa LE, Nogales CG, Souza NJA

Abstract

Ozonated sunflower oil is an alternative to intracanal medication in root canal treatment. Thus, the aim of this study is to evaluate whether ozonated sunflower oil is effectively removed from the root canal with Passive Ultrasonic Irrigation and the XP-Endo Finisher. Materials and methods: Twenty-three human single-root teeth were selected for this experiment. Teeth were divided into 2 groups according intracanal medication, G1: Ultracal calcium hydroxide, and G2: ozonated sunflower oil, and then subdivided according to complementary techniques: G1A (n=5): sunflower ozonated oil + PUI; G1B (n=5): ozonated sunflower oil + XP-Endo Finisher; G2A (n=5): Ultracal calcium hydroxide + PUI; G2B (n=5): Ultracal calcium hydroxide + XP-Endo Finisher; G3 Control (n=3): no intracanal medication. After chemomechanical preparation up to R25 or R40 Reciproc files, root canals were filled with intracanal medication according to experimental groups and remained in a wet chamber for 14 days. The teeth were then treated according to subgroups. Samples were prepared for SEM evaluation and images were analyzed by one evaluator. Data were tabulated and underwent Kruskal-Wallis and Mann-Whitey testing (p< 0.05). Results: Image analyses showed all tested protocols were effective in the removal of intracanal medication, but there was no statistical significance among them. Conclusion: Passive ultrasonic irrigation and the XP-Endo Finisher were effective in the removal of ozonated sunflower oil from root canals.

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