Table 3.

Group-wise comparison of the segregated instrumentation time for access opening, biomechanical preparation, and obturation

Instrumentation time	Mean ± SD (in minutes)	p valuea	Minimum (in minutes)	Maximum (in minutes)
(Access opening)
Group I	6.4 ± 2.00	p > 0.05	3	10.1
Group II	6.0 ± 1.87		3.1	10.3
Group III	6.02 ± 1.91		4	11.5
Instrumentation time (BMP)
Group I	40.02 ± 7.08	p < 0.001**	20.3	50.3
Group II	27.40 ± 6.27		19.7	40.3
Group III	25.26 ± 7.86		15.4	45.3
Instrumentation time (obturation)
Group I	7.39 ± 2.4	p < 0.05*	2.5	13.1
Group II	6.1 ± 1.9		3.3	10.1
Group III	5.6 ± 2.00		3.2	10.0

^*SD, standard deviation,

^aKruskal–Wallis non-parametric test,

^*p < 0.05 Significant,

^**p < 0.001 highly significant