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  Indian J Med Microbiol
 

Figure 4: Smear removal scores of the experimental groups at apical 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. In the apical part of the root canal walls, heavy smear layer was observed regardless of the final irrigation solutions

Figure 4: Smear removal scores of the experimental groups at apical 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. In the apical part of the root canal walls, heavy smear layer was observed regardless of the final irrigation solutions