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  Indian J Med Microbiol
 

Figure 2: Smear removal scores of experimental groups at middle parts of root canals (n = 20) based on the four-level scoring system. Score 1 - No smear layer; 2 - Few areas covered by smear layer; 3 - Smear layer covering almost all the surface, with few tubules opened; 4 - Smear layer covering all the surfaces. Five percent or 2.5% sodium hypochlorite was applied for 1 or 3 min as an initial final irrigant, followed by ethylenediaminetetraacetic acid and QMix. QMix caused more smear layer removal than ethylenediaminetetraacetic acid after using 5% sodium hypochlorite for 3 min. Five percent sodium hypochlorite resulted in more smear layer by QMix as compared to 2.5% sodium hypochlorite regardless of time (P < 0.05)

Figure 2: Smear removal scores of experimental groups at middle parts of root canals (<i>n</i> = 20) based on the four-level scoring system. Score 1 - No smear layer; 2 - Few areas covered by smear layer; 3 - Smear layer covering almost all the surface, with few tubules opened; 4 - Smear layer covering all the surfaces. Five percent or 2.5% sodium hypochlorite was applied for 1 or 3 min as an initial final irrigant, followed by ethylenediaminetetraacetic acid and QMix. QMix caused more smear layer removal than ethylenediaminetetraacetic acid after using 5% sodium hypochlorite for 3 min. Five percent sodium hypochlorite resulted in more smear layer by QMix as compared to 2.5% sodium hypochlorite regardless of time (<i>P</i> < 0.05)