Table 3 Mean values ± standard deviation of straightened degree from original angles after instrumentation in L-shaped and S-shaped root canals
In L-shaped canals | In S-shaped canals | ||
|---|---|---|---|
Group | Straightened angles (°) | Coronal curvature (°) | Apical curvature (°) |
PTU | 6.00 ± 1.09c | 6.32 ± 0.80b | 22.51 ± 3.45a |
WO | 4.73 ± 0.54b | 7.31 ± 0.73c | 20.44 ± 2.02a |
PTN | 0.90 ± 1.58a | 5.19 ± 1.42a | 21.03 ± 2.21a |
P value | <0.05 | <0.05 | >0.05 |