Type of Instrumentation Anterior teeth Maxillary                    Mandibular        1st molars 2nd molars 1st molars 2ndmolars   Step Back  7.22 ±  1.91   20.10 ±  5.2  20.14 ± 5.4 20.24 ±  5.12 22.38 ± 6.70 LSX 3.40 ±  0.56 8.03 ±  3.80 10.45 ± 4.77 9.37 ±  2.19 10.40 ± 3.62 ProTaper 3.49 ±  0.59 9.23 ±  4.27 11.35 ± 4.97  9.77 ±  3.99 11.35 ± 4.97 p= .005

Table 2: Instrumentation time (minutes) for different groups of teeth.