Smear layer removal by auxiliary chemical substances in biomechanical preparation: a scanning electron microscope study.
作者： Alessandra Sverberi Carvalho , Carlos Henrique Ribeiro Camargo , Marcia Carneiro Valera , Samira Esteves Afonso Camargo , Maria Nadir Gasparoto Mancini
DOI: 10.1016/J.JOEN.2008.08.012
关键词:
摘要: Abstract The aim of this study was to assess, by scanning electron microscopy analysis, the cleaning ability irrigants and auxiliary chemical substances in biomechanical preparation. Thirty-two single-rooted human teeth were subjected standardized root canal instrumentation with different (n = 8): group 1, 2.5% NaOCl + 17% ethylenediaminetetraacetic acid (EDTA); 2, 2% chlorhexidine gel EDTA; 3, Canal Plus NaOCl; 4, saline EDTA. After instrumentation, prepared for analysis (2000×) evaluate cervical, middle, apical thirds. area analyzed quantified according percentage open tubules, data statistically variance Tukey tests (P .05). results showed significant difference higher quantity tubules groups 1 3. In all groups, obtained on cervical third better than that middle thirds, group. Irrigation combination followed EDTA produced greater walls.
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