Table 2.

Comparison of surgical working time and mouth opening (mm) at baseline and day 3 between and within groups

	Group 1 n = 20	Group 2 n = 20	Group 3 n = 20	Group 4 n = 20	p value
Surgical Working time	15.9 ± 3.6	15.7 ± 3.5	23.2 ± 2.6	23.4 ± 2.5	< 0.0001
Mouth opening (mm)
Preoperative	44.9 ± 6.5	45.4 ± 6.8	45.5 ± 5.9	45.1 ± 6.7	0.992
Post-op Day 3	35.0 ± 5.2	39.4 ± 6.3	39.8 ± 5.5	40.8 ± 4.2	0.016
Difference (Post-op Day 3 to preoperative)	9.7 ± 4.5	5.6 ± 4.3	5.8 ± 4.5	5.0 ± 3.9	0.005
pvalue	< 0.0001	< 0.0001	< 0.0001	< 0.0001

Data are presented as mean and standard deviation, n frequency, p value 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