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Table 4 Paired t-test for values of linear (mm) and angle (°) measurements among the three digital models

From: Reliability and validity of miniscrews as references in cone-beam computed tomography and intraoral scanner digital models: study on goat heads

Measurement

Mean bias

Standard deviation

95% confidence interval

t

P

Linear measurements

 CBCT1–CBCT2

0.20

0.26

0.10 to 0.29

4.231

< 0.001

 CBCT1–IOS

0.12

0.24

0.07 to 0.18

4.434

< 0.001

 0.3-mm voxels–IOS

−0.02

0.32

−0.14 to 0.10

−0.363

0.719

Angle measurements

 CBCT1–CBCT2

−0.04

0.97

−0.69 to 0.61

−0.134

0.896

 CBCT1–IOS

−0.29

2.79

−2.17 to 1.58

−0.346

0.737

 CBCT2–IOS

0.49

1.20

−0.37 to 1.35

1.288

0.230