Smear layer removal by passive ultrasonic irrigation and 2 new mechanical methods for activation of the chelating solution.
作者： Ulisses Xavier da Silva Neto , Daniel Comparin , Ricardo Machado , Luiz Rômulo Alberton , Bianca Araujo Marques de Mattos
关键词: Distilled water 、 Smear layer 、 Ultrasonic irrigation 、 Root canal 、 Chelation 、 Nuclear chemistry 、 Ethylenediaminetetraacetic acid 、 Chemistry
摘要: Objectives The aim of this study was to compare smear layer removal by conventional application (CA), passive ultrasonic irrigation (PUI), EasyClean (EC), and XP-Endo Finisher (XPF), using 17% ethylenediaminetetraacetic acid (EDTA) after chemomechanical preparation, as evaluated with scanning electron microscopy (SEM). Materials methods Forty-five single-rooted human mandibular premolars were selected for study. After the teeth randomly divided into 5 groups according protocol removal, follows: G1 (control): CA distilled water; G2 (CA): EDTA; G3 (PUI): EDTA activated PUI; G4 (EC): EC; G5 (XPF): XPF. SEM images (×1,000) obtained from each root third scored 3 examiners. Data Kruskal-Wallis Dunn tests (p Results In apical third, there no statistically significant differences among > 0.05). cervical middle thirds, experimental performed better than control group Conclusions No method able completely remove layer, especially in third. Using chelating solution any form activation.
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