Table 3.

Pain levels between groups at 1st, 3rd, and 7th postoperative days between groups

	Group 1 n = 20	Group 2 n = 20	Group 3 n = 20	Group 4 n = 20	p value
Pain levels
Post-op day 1	5.4 ± 1.2	4.15 ± 1.0	4.25 ± 1.0	3.3 ± 1.0	<0.0001
Post-op day 3	3.75 ± 1.5	2.8 ± 1.0	2.85 ± 1.1	2.2 ± 0.61	<0.0001
Post-op day 7	2 ± 2.07	1.1 ± 1.51	1.3 ± 1.55	0.7 ± 0.57	0.064
p value	< 0.0001	< 0.0001	< 0.0001	< 0.0001
The difference in pain level
Post-op day 3 to Post-op day 1	1.65 ± 1.27	1.35 ± 1.04	1.40 ± 1.14	1.15 ± 0.93	0.636
pvalue	< 0.0001	< 0.0001	< 0.0001	< 0.0001
Post-op day 7 to Post-op day 1	3.40 ± 2.5	3.05 ± 1.82	2.95 ± 1.90	2.65 ± 1.03	0.703
pvalue	< 0.0001	< 0.0001	< 0.0001	< 0.0001
Post-op day 7 to Post-op day 3	1.75 ± 2.5	1.70 ± 1.78	1.55 ± 1.32	1.5 ± 0.69	0.962
pvalue	< 0.0001	< 0.0001	< 0.0001	< 0.0001

Data are presented as mean and standard deviation, n frequency, pvalue less than 0.05 is considered significant

Group1: Conventional rotatory without Dexamethasone

Group2: Conventional rotatory with Dexamethasone

Group3: Piezo-surgery without Dexamethasone

Group4: Piezo-surgery with Dexamethasone