Table 2. Comparison of incidence of pain, the use of analgesics and pain intensity in the treatment groups at pre-operative and 1-day/1-week post-operative review periods.

Treatment Group	Variable	Pain group	Pre-operative periodn=60 (%)	1-day post-operativen=60 (%)	p-value	1-week post-operativen=60 (%)	p-value
Rotary	Pain Incidence	Pain	22 (36.7)	23 (38.3)	0.850	15 (25.0)	0.166
		No pain	38 (63.3)	37 (61.7)		45 (75.0
	Use of Analgesics	Pain	12 (20.0)	6 (10.0)	0.125	2 (3.3)	0.004
		No pain	48 (80.0)	54 (90.0)		58 (96.7)
	Pain Intensity	No pain	38 (63.3)	37 (61.7)	0.026*	45 (75.0)	0.009
		Mild	9 (15.0)	17 (28.3)		13 (21.7)
		Moderate	13 (21.7)	4 (6.7)		2 (3.3)
		Severe	0 (0.0)	2 (3.3)		0 (0.0)
Control	Pain Incidence	Pain	32 (53.3)	27 (45.0)	0.361	12 (20.0)	0.001
		No pain	28 (46.7)	33 (55.0)		48 (80.0)
	Use of Analgesics	Pain	11 (18.3)	13 (21.7)	0.917	2 (3.3)	0.004
		No pain	49 (81.7)	47 (78.3		58 (96.7)
	Pain Intensity	No pain	28 (46.7)	33 (55.0)	0.415	48 (80.0)	0.002
		Mild	21 (35.0)	14 (23.3)		10 (16.7)
		Moderate	11 (18.3)	12 (20.0)		2 (3.3)
		Severe	0 (0.0)	1 (1.7)		0 (0.0)
n= Total number of treated teeth per group at the different review periods