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Table 1 The As and Af temperatures of the three experimental NiTi instrument systems

From: Differential scanning calorimetric investigations of three rotary nickel-titanium instrument systems before and after simulated clinical uses

Subgroups As (°C) Af (°C)
Segments
A B C D A B C D
Mean ± Standard deviation
1.1 30.69 ± 0.98 31.55 ± 1.09 32.79 ± 1.15 31.97 ± 0.69 47.65 ± 0.48 49.36 ± 0.73 50.62 ± 1.03 51.31 ± 1.79
1.2 30.70 ± 0.81 31.35 ± 1.24 32.95 ± 1.16 31.91 ± 1.12 47.43 ± 0.45 49.45 ± 0.35 50.45 ± 1.08 51.11 ± 1.50
1.3 30.53 ± 0.72 31.47 ± 1.04 32.84 ± 0.98 31.87 ± 0.78 47.62 ± 0.70 49.36 ± 0.46 50.34 ± 1.10 51.12 ± 1.10
P value 0.883 0.924 0.945 0.967 0.634 0.904 0.845 0.943
2.1 35.62 ± 0.34 37.06 ± 0.47 38.92 ± 0.56 41.78 ± 0.44 41.45 ± 0.33 42.90 ± 0.75 44.99 ± 0.60 49.57 ± 0.85
2.2 35.51 ± 0.28 37.10 ± 0.43 38.97 ± 0.59 41.81 ± 0.40 41.42 ± 0.40 42.63 ± 0.62 45.10 ± 0.81 50.01 ± 0.83
2.3 35.46 ± 0.29 36.65 ± 0.67 38.73 ± 0.35 41.86 ± 0.33 41.47 ± 0.41 43.48 ± 0.90 45.39 ± 0.66 50.29 ± 0.77
P value 0.474 0.136 0.542 0.906* 0.958 0.055 0.438 0.158
3.1 44.57 ± 1.13 43.94 ± 0.55 43.58 ± 0.79 43.98 ± 0.45 53.89 ± 0.83 53.00 ± 1.22 52.37 ± 1.17 53.08 ± 1.11
3.2 44.62 ± 1.22 44.01 ± 0.56 43.77 ± 0.96 43.83 ± 0.68 54.07 ± 1.20 53.39 ± 0.99 52.38 ± 1.34 53.40 ± 1.09
3.3 44.59 ± 0.97 44.08 ± 0.62 43.82 ± 0.59 43.93 ± 0.60 53.79 ± 0.94 53.28 ± 1.11 52.36 ± 1.07 53.18 ± 1.31
P value 0.993 0.873 0.792 0.850 0.823 0.718 0.999 0.826
  1. P > 0.05, ANOVA test
  2. *Kruskal Wallis test