Efficacy of Two Irrigants Used with Self-Adjusting File System on Smear Layer: A Scanning Electron Microscopy Study

Table 3

Mean of smear scores related to the thirds of teeth in Groups 1, 2, and 3 (intergroup comparisons of thirds).

	Coronal	Middle	Apical
Group 1 (MTAD + NaOCl)	2.2	1.9*	2.5**
Group 2 (citric acid + NaOCl)	1.3	1.7*	2.2**
Group 3 (NaOCl)	5	5	5

* and ** show the statistical equivalence.