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  Indian J Med Microbiol
 

Figure 4: Scanning electron microscope photomicrographs of the coronal level of root canal wall irrigated with needle irrigation system after 17% EDTA irrigation solution. Surface free of debris, complete removal of the smear layer, all dentinal tubules are clean and open (score 0). Original magnifications, ×350

Figure 4: Scanning electron microscope photomicrographs of the coronal level of root canal wall irrigated with needle irrigation system after 17% EDTA irrigation solution. Surface free of debris, complete removal of the smear layer, all dentinal tubules are clean and open (score 0). Original magnifications, ×350