[Table/Fig-3]:

Multiple pair wise comparisons between groups at cervical third, middle third and apical third.

Group	Mean at cervical third (S.D)	p- value	Mean at middle third (S.D)	p- value	Mean at apical third (S.D)	p- value
I	2.60 (0.52)	0.001*	2.60 (0.52)	0.001*	3.20 (0.79)	0.001*
II	0.40 (0.52)		0.92 (0.32)		1.20 (0.42)
I	2.60 (0.52)	0.001*	2.60 (0.52)	>0.05	3.20 (0.79)	0.001*
III	1.30 (0.67)		2.20 (0.42)		2.30 (0.48)
I	2.60 (0.52)	>0.05	2.60 (0.52)	>0.05	3.20 (0.79)	>0.05
IV	2.40 (0.52)		2.30 (0.48)		3.10 (0.57)
II	0.40 (052)	0.001*	0.92 (0.32)	0.001*	1.20 (0.42)	0.001*
III	1.30 (0.67)		2.20 (0.42)		2.30 (0.48)
II	0.40 (0.52)	0.001*	0.92 (0.32)	0.001*	1.20 (0.42)	0.001*
IV	2.40 (0.52)		2.30 (0.48)		3.10 (0.57)
III	1.30 (0.67)	0.001*	2.20 (0.42)	>0.05	2.30 (0.48)	0.001*
IV	2.40 (0.52)		2.30 (0.48)		3.10 (0.57)

Post-hoc Mann Whitney U test (p≤0.05 significant)