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Photomicrograph of root canals contaminated with E. faecalis and C. albicans. A) E. faecalis 1000X ; B) E. faecalis 5000X; C) C. albicans 1000X; D) C. albicans 5000X. E-H) shows SEM images of the inhibition of E. faecalis biofilm formation (residual activity) with final irrigation regimens on teeth samples: E) 3% NaOCl,; F) 2% Chlorhexidine; G) 0.5% Chitosan and H) 0.25% Chitosan.
