[Table/Fig-2]:

Comparison of efficacy by four irrigants on removal of smear layer.

Root third	Groups	Mean	SD	f-value	p-value
Cervical third	I	2.60	0.52	31.467	0.001*
	II	0.40	0.52
	III	1.30	0.67
	IV	2.40	0.52
Middle third	I	2.60	0.52	21.87	0.001*
	II	0.90	0.32
	III	2.20	0.42
	IV	2.30	0.48
Apical third	I	3.20	0.79	21.72	0.001*
	II	1.20	0.42
	III	2.30	0.48
	IV	3.10	0.57

Kruskal Wallis Anova test. p>0.05 (not significant), p<0.05 (significant), p<0.001 (highly significant)* SD-Standard deviation