Table 2.

Mean postoperative Pain at 6, 24, 48 and 72 hours and rescue medications needed in each group. The postoperative pain scores were analyzed statistically using the Kruskal Wallis test and Mann-Whitney U and Wilcoxon signed ranks test at a significance level of p less than 0 .05. Same superscript in a column indicates no significant difference, DRG= Radiographic method , EAL= Electronic Apex Locator , SLC= Simultaneous Length Control.

		Mean Postoperative Pain VAS scale (cm)
	6 hours	24 hours	48 hours	72 hours	No. of patients taking analgesics
DRG	3.76a	2.59a	1.86a	0.71a	8b
EAL	3.12ab	2.06ab	1.71a	0.50a	3a
SLC	2.24b	1.51b	0.42b	0.34a	2a