Table 2.
Mean (SD) of the number of cycles to failure (NCF) and fragment lengths in mm (SD) of tested NiTi instruments according to the groups
| NiTi instruments | Groups | NCF (SD) | Fragment length mm (SD) |
| ProFile (n=40) | Control | 396.5 (77.46) | 2.6 (0.4) |
| 5 min %2.5 NaOCl | 385.5 (76.03) | 2.4 (0.5) | |
| 5 min %2.5 NaOCl + sterilization | 359 (73.25) | 2.5 (0.6) | |
| 5X (5 min %2.5 NaOCl + sterilization) | 320 (61.55) | 2.6 (0.2) | |
| FlexMaster (n=40) | Control | 379 (70.54) | 3 (0.4) |
| 5 min %2.5 NaOCl | 378 (53.39) | 2.5 (0.4) | |
| 5 min %2.5 NaOCl + sterilization | 374 (70.82) | 2.7 (0.3) | |
| 5X (5 min %2.5 NaOCl + sterilization) | 373.5 (67.37) | 2.5 (0.4) | |
| Twisted File (n=40) | Control | 551.2 (118.78) | 2.4 (0.4) |
| 5 min %2.5 NaOCl | 526.5 (105.8) | 2.4 (0.2) | |
| 5 min %2.5 NaOCl + sterilization | 439 (148.16) | 2.6 (0.4) | |
| 5X (5 min %2.5 NaOCl + sterilization) | 415.7 (126.21) | 2.5 (0.2) | |
| Mtwo (n=40) | Control | 599.5 (79.46) | 2.8 (0.2) |
| 5 min %2.5 NaOCl | 560 (56.81) | 2.7 (0.2) | |
| 5 min %2.5 NaOCl + sterilization | 553 (87.94) | 2.6 (0.2) | |
| 5X (5 min %2.5 NaOCl + sterilization) | 514.5 (73.76) | 2.6 (0.2) |
SD=Standard deviation