Table 3.
Mean thermal variations of the stainless-steel drills with straight blades (SS-SB), diamond-like carbon-coated drills with straight blades (DLCC-SB) and diamond-like carbon-coated drills with twisted blades (DLCC-TB) groups.
| Groups | SS-SB | DLCC-SB | DLCC-TB | |
|---|---|---|---|---|
| Δ T Mean (°C) |
||||
| Specific mean Δ T of initial drills | 6.03 ± 0.58 | 6.11 ± 0.58 | 6.12 ± 0.69 | |
| Specific mean Δ T of pilot drills | 7.42 ± 0.68 | 5.45 ± 1.01 | 5.46 ± 1.08 | |
| Specific mean Δ T of progressive drills | 4.22 ± 0.68 | 4.65 ± 0.53 | 3.34 ± 0.37 | |
| Specific mean Δ T of final drills | 4.16 ± 0.45 | 4.08 ± 0.33 | 3.14 ± 0.51 | |
| Overall mean Δ T for drill material | 5.45 ± 1.57 | 5.07 ± 1.70 | - | |
| Overall mean Δ T for drill design | - | 4.37 ± 0.52 | 3.24 ± 0.48 | |
Δ T: thermal variation.