TABLE 3.
Mean values of metal mass volume (mm3) and cross-section area (μm) at 3 and 5 mm from the tips of the instruments tested
| Instruments | Metal mass volume (mm3) | Cross-section area (μm2) | ||||||
|---|---|---|---|---|---|---|---|---|
| 3 mm | 5 mm | 3 mm | 5 mm | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| ETP 25.06 | 0.1298a | 0.002 | 0.3767a | 0.025 | 74.35a | 0.073 | 135.5a | 0.079 |
| PT 25.08 | 0.1574b | 0.004 | 0.3680a | 0.005 | 79.77b | 0.148 | 140.4b | 0.058 |
| PTG 25.08 | 0.1898c | 0.002 | 0.4321c | 0.006 | 99.69c | 0.139 | 183.1c | 0.326 |
| FG 25.08 | 0.1994d | 0.008 | 0.4874d | 0.005 | 107.0d | 0.019 | 193.4d | 0.471 |
SD: Standard deviation. Different superscript letters in the same column indicate statistical differences among groups (P<0.05)