Table 2: Experimental groups.

- Tooth Apical
Diameter
Canal Curvature IG-NiTi Measurement NiTi File Measurement
Expert operator
1 Low. Prem. 30 30 25
2 Low. Mol. 30 Yes 30 25
3 Low. Mol. 20 Yes 20 20
4 Low. Mol. 25 Yes 25 20
5 Upp. Mol. 40 - 40 30
6 Upp. Mol. 35 - 30 30
7 Upp. Mol. 25 - 25 25
8 Low. Mol. 25 - 25 20
9 Low. Mol. 30 - 30 25
10 Low. Can 30 Yes 30 20
11 Low. Prem. 30 - 30 25
12 Upp. Inc. 30 - 30 25
13 Upp. Inc. 25 - 25 25
14 Upp. Inc. 25 Yes 25 20
15 Low. Prem. 35 - 35 35
16 Low. Inc. 25 - 25 20
17 Low. Prem. 35 - 35 30
18 Low. Inc. 30 Yes 30 25
19 Low. Inc. 35 - 35 30
20 Low. Prem. 30 - 30 30
21 Upp. Mol. 25 Yes 25 30
22 Upp. Mol. 25 - 25 25
23 Upp. Mol. 30 Yes 35 30
24 Upp. Mol. 30 - 30 25
25 Upp. Mol. 20 Yes 20 20
26 Upp. Mol. 25 Yes 30 30
27 Low. Can. 20 - 20 25
28 Upp. Mol. 25 - 25 25
29 Upp. Mol. 25 - 25 25
30 Upp. Mol. 25 - 25 20
Unexpert Operator
1 Upp. Prem. 30 - 30 25
2 Upp. Inc. 30 Yes 30 25
3 Low. Inc 30 Yes 30 20
4 Upp. Prem. 25 - 25 30
5 Upp. Mol. 35 - 35 25
6 Upp. Mol. 35 - 30 25
7 Upp. Mol. 40 Yes 40 25
8 Upp. Mol. 30 - 30 20
9 Upp. Mol. 35 Yes 30 20
10 Upp. Mol. 40 - 40 25
11 Upp. Mol. 35 - 35 25
12 Upp. Mol. 30 - 30 20
13 Upp. Inc. 20 Yes 20 20
14 Upp. Inc. 40 - 40 25
15 Upp. Mol. 25 Yes 25 20
16 Low. Inc. 25 Yes 25 25
17 Low. Prem. 30 - 30 30
18 Low. Inc. 30 Yes 30 25
19 Upp. Mol. 20 - 20 20
20 Upp. Mol. 25 - 20 30
21 Upp. Mol. 30 - 30 25
22 Upp. Mol. 25 - 25 30
23 Upp. Mol. 25 - 25 30
24 Upp. Mol. 25 - 25 30
25 Low. Mol. 30 Yes 30 35
26 Upp. Can. 25 - 25 25
27 Upp. Mol. 20 Yes 20 25
28 Low. Mol. 25 Yes 25 25
29 Low. Prem. 25 - 25 25
30 Low. Prem. 25 - 25 25