Table 4 Canal transportation at the levels of 1, 2, and 3 mm below furcation after instrumentation with 3 different NiTi rotary systems (mm) (n = 6 per group)

1 mm

below FL

OS

0.123 ± 0.067

0.191 ± 0.057

0.226 ± 0.079

TF

0.077 ± 0.044

0.148 ± 0.095

0.155 ± 0.066

PTG

0.056 ± 0.099

0.201 ± 0.152

0.223 ± 0.068

F value

1.319

0.403

1.794

p value

0.297

0.675

0.200

2 mm

below FL

OS

0.042 ± 0.096

0.085 ± 0.065

0.065 ± 0.041^ab

TF

-0.009 ± 0.109

0.056 ± 0.056

-0.016 ± 0.027^b

PTG

0.013 ± 0.059

0.085 ± 0.052

0.109 ± 0.110^a

F value

0.464

0.42

5.369

p value

0.638

0.663

0.017

3 mm

below FL

OS

0.042 ± 0.077

-0.065 ± 0.079

-0.010 ± 0.027^a

TF

-0.013 ± 0.075

-0.053 ± 0.090

-0.111 ± 0.091^b

PTG

0.000 ± 0.078

-0.082 ± 0.036

-0.043 ± 0.033^ab

F value

0.848

0.235

4.732

p value

0.102

0.793

0.026