Table 4.

Mean pain intensity scores shown as differences (95% CI) between treatments assessed by patients on 100 mm VAS after gingivectomies using lignocaine 2% (LIG), lignocaine 2% with adrenaline 1 : 160 000 (LIGA160) or lignocaine 2% with adrenaline 1 : 80 000 (LIGA80) as local anaesthetic.

Time after surgery (h)	LIG vs LIGA160	LIGA160 vs LIGA80	LIG vs LIGA80
0	1.74‡	−0.48	1.26
	(0.47, 3.01)	(−1.02, 0.07)	(−0.09, 2.60)
1	2.56	−3.06‡	−0.50‡
	(0.53, 4.60)	(−5.05, −1.08)	(−3.22, 2.22)
2	1.12	−4.53‡	−3.41‡
	(−1.51, 3.76)	(−7.55, −1.52)	(−6.94, 0.12)
3	−0.16	−3.79‡	−3.95‡
	(−3.11, 2.79)	(−7.13, −0.45)	(−7.55, −0.35)
4	−1.09	−3.73‡	−4.82‡
	(−4.31, 2.12)	(−7.39, 0.07)	(−8.28, −1.35)
5	−1.05	−3.66‡	−4.71‡
	(−4.23, 2.14)	(−7.48, 0.15)	(−8.19, −1.24)
6	−0.50	−3.86‡	−4.36‡
	(−3.72, 2.72)	(−7.69, 0.04)	(−7.80, −0.93)
7	−0.28	−4.13‡	−4.41‡
	(−3.60, 3.05)	(−8.20, 0.07)	(−8.11, −0.71)
8	0.15	−4.43‡	−4.28‡
	(−3.01, 3.30)	(−8.37, −0.49)	(−8.17, −0.40)
9	0.56	−3.99‡	−3.43‡
	(−2.25, 3.37)	(−7.63, −0.35)	(−7.16, 0.30)
10	0.36	−3.08‡	−2.72‡
	(−2.31, 3.03)	(−6.49, 0.34)	(−6.24, 0.81)
11	0.17	−2.78‡	−2.61‡
	(−2.28, 2.61)	(−5.84, 0.28)	(−5.80, 0.57)
Sum PI	3.62	−40.66§	−37.05§
	(−24.28, 31.52)	(−73.11, −8.22)	(−69.68, −4.41)

^§Significant difference (P < 0.05) found with one-way anova, and Scheffé's test.

^‡Significant difference (P < 0.05) found with the Kruskal–Wallis H-test, and the two-tailed Mann–Whitney test.