Table 2. Transformation temperatures (°C) for the nickel-titanium rotary instruments that were tested for 3 samples of each instrument.
| Instrument | Cooling | Heating | ||||||
|---|---|---|---|---|---|---|---|---|
| Rs | Rf | Ms | Mf | Rs | Rf | As | Af | |
| M3 Pro Gold size 20/0.04 | 32.49 ± 0.20 | 12.36 ± 0.22 | 3.70 ± 0.17 | −31.52 ± 0.23 | - | - | 23.58 ± 0.12 | 44.50 ± 0.18 |
| M3 Pro Gold size 25/0.04 | 23.22 ± 0.19 | 13.40 ± 0.24 | −11.58 ± 0.16 | −33.05 ± 0.22 | - | - | 24.98 ± 0.15 | 36.39 ± 0.17 |
| M3 Rotary size 20/0.04 | - | - | 17.22 ± 0.16 | 2.65 ± 0.22 | - | - | 6.01 ± 0.14 | 20.48 ± 0.16 |
| M3 Rotary size 25/0.04 | - | - | 17.71 ± 0.18 | 1.11 ± 0.21 | - | - | 5.17 ± 0.12 | 21.26 ± 0.19 |
Data were shown with mean ± standard deviations.
Ms, martensite transformation starting point; Mf, martensite transformation finishing point; Rs, R-phase transformation starting point; Rf, R-phase transformation finishing point; As, austenite transformation starting point; Af, austenite transformation finishing point.