Table 3.

Intergroup comparison with Mann Whitney test between all the groups in under filled, optimal filled canals, and over filled canals

Inter group comparison	Under filled canals		Optimal filled canals		Over filled canals
	Z value	P value	Z value	P value	Z value	P value
Group I vs II	−1.76	0.077	−0.917	0.359	−1.59	0.111
Group I vs III	−1.40	0.162	−0.624	0.533	−1.40	0.162
Group I vs IV	−1.76	0.077	−1.09	0.274	−0.403	0.687
Group II vs III	−2.82	0.005 *	−0.296	0.768	−2.80	0.005*
Group II vs IV	0.000	1.00	−1.96	0.049*	−1.96	0.049*
Group III vs IV	−2.82	.005 *	−1.69	0.091	−1.03	.302

Z value–Mann Whitney test; p value–probability; *Significant at p < 0.05