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Table 1 The Mean & standard deviation of volume of dentin removed canal transportation and centering ratio of 25° and 35° root canal curvature prepared by (2Shape & NeoNiTi)

From: Shaping ability of 2Shape and NeoNiTi rotary instruments in preparation of curved canals using micro-computed tomography

Section

Parameter

25° 2Shape

25° NeoNiTi

p value1

35° 2Shape 

35° NeoNiTi

p value2

p value3

p value4

p value5

Coronal

Volume

0.63 ± 0.37

0.68 ± 0.32

0.773

0.81 ± 0.47

0.95 ± 0.52

0.650

0.510

0.262

0.557

Transportation

0.33 ± 0.22

0.27 ± 0.24

0.507

0.31 ± 0.19

0.32 ± 0.12

0.734

0.843

0.222

0.647

Centering ratio

2.88 ± 1.93

2.82 ± 2.40

0.741

3.41 ± 1.66

3.65 ± 2.48

0.847

0.630

0.457

0.425

Middle

Volume

0.31 ± 0.17

0.30 ± 0.15

0.729

0.39 ± 0.28

0.54 ± 0.27

0.096

0.644

0.030*

0.398

Transportation

0.14 ± 0.17

0.06 ± 0.10

0.106

0.09 ± 0.13

0.07 ± 0.10

0.578

0.206

0.604

0.087

Centering ratio

3.04 ± 0.13

1.54 ± 2.02

0.078

2.42 ± 2.30

1.58 ± 1.66

0.683

0.171

0.940

0.127

Apical

Volume

0.08 ± 0.05

0.07 ± 0.03

0.525

0.09 ± 0.13

0.08 ± 0.09

0.545

0.323

0.323

0.656

Transportation

0.07 ± 0.08

0.09 ± 0.15

0.624

0.04 ± 0.24

0.15 ± 0.19

0.364

0.792

0.644

0.725

Centering ratio

0.80 ± 1.03

0.74 ± 0.54

0.419

1.31 ± 2.06

1.49 ± 1.82

0.762

0.553

0.843

0.411

Total

Volume

0.34 ± 0.18

0.35 ± 0.27

0.899

0.43 ± 0.27

0.52 ± 0.28

0.450

0.510

0.147

0.557

Transportation

0.18 ± 0.08

0.14 ± 0.07

0.126

0.12 ± 0.14

0.08 ± 0.08

0.882

0.582

0.356

0.227

Centering ratio

2.51 ± 0.96

1.87 ± 1.44

0.149

2.38 ± 1.08

2.02 ± 1.06

0.916

0.234

0.501

0.280

  1. 1p value using Mann–Whitney U between 25° 2Shape and 25° NeoNiTi
  2. 2p value using Mann–Whitney U between 35° 2Shape and 35° NeoNiTi
  3. 3p value using Mann–Whitney U between 25° 2Shape and 35° 2Shape
  4. 4p value using Mann–Whitney U between 25° and 35° NeoNiTi
  5. 4p value using Mann–Whitney U between NeoNiTi and NeoNiTi
  6. *p value < 0.05