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Table 2 Between-examiner comparison of mandibular measurements of plaster and digital models

From: Reliability of mixed dentition space analysis using a digital model obtained from an optical impression: a preliminary study

 

Plaster model

Digital model

Plaster -digital

Measurements

EX 1

Mean (SD), mm

EX 2

Mean (SD), mm

Inter-examiner difference

Mean (95% CI), mm

EX 1

Mean (SD), mm

EX 2

Mean (SD), mm

Inter-examiner difference

Mean (95% CI), mm

EX 1

Mean (SD), mm

EX 2

Mean (SD), mm

Inter-examiner difference

Mean (95% CI), mm

Lateral incisor width, right

5.98 (0.04)

5.98 (0.03)

0.00

(-0.06, 0.06)

5.87 (0.10)

5.87 (0.08)

0.00

(-0.13, 0.13)

0.12 (0.08)

0.12 (0.10)

0.00

(-0.14, 0.14)

Central incisor width, right

5.34 (0.04)

5.21 (0.04)

0.13

(0.07, 0.20)

5.25 (0.20)

5.30 (0.00)

-0.05

(-0.26, 0.16)

0.09 (0.19)

-0.09 (0.04)

0.18

(-0.04, 0.41)

Central incisor width, left

5.19 (0.02)

5.23 (0.04)

-0.04

(-0.09, 0.02)

5.17 (0.08)

5.25 (0.05)

-0.08

(-0.22, 0.06)

0.03 (0.08)

-0.02 (0.06)

0.05

(-0.09, 0.19)

Lateral incisor width, left

5.82 (0.04)

5.98 (0.03)

-0.16

(-0.20, -0.12)

5.78 (0.04)

5.75 (0.05)

0.03

(-0.02, 0.09)

0.03 (0.08)

0.23 (0.07)

-0.20

(-0.27, -0.11)

AS, right

23.54 (0.20)

24.61 (0.14)

-1.07

(-1.39, -0.74)

23.88 (0.27)

23.80 (0.13)

0.08

(-0.17, 0.34)

-0.34 (0.29)

0.81 (0.17)

-1.15

(-1.43, -0.87)

AS, left

23.78 (0.08)

24.67 (0.16)

-0.89

(-1.03, -0.74)

24.08 (0.36)

23.85 (0.10)

0.23

(-0.10, 0.56)

-0.30 (0.41)

0.82 (0.18)

-1.12

(-1.53, -0.71)

RS (calculated)

21.32 (0.02)

21.35 (0.04)

-0.03

(-0.07, 0.01)

21.17 (0.17)

21.23 (0.10)

-0.06

(-0.31, 0.20)

0.15 (0.16)

0.12 (0.13)

0.03

(-0.25, 0.29)

ALD, right

2.22 (0.20)

3.26 (0.13)

-1.04

(-1.33, -0.74)

2.71 (0.42)

2.57 (0.09)

0.14

(-0.33, 0.60)

-0.49 (0.44)

0.69 (0.08)

-1.18

(-1.63, -0.71)

ALD, left

2.46 (0.08)

3.32 (0.16)

-0.86

(-0.98, -0.72)

2.91 (0.51)

2.62 (0.10)

0.29

(-0.29, 0.87)

-0.45 (0.55)

0.69 (0.20)

-1.14

(-1.80, -0.48)

  1. AS: available space for canine and premolars, ALD: arch length discrepancy, CI: confidence interval, EX: examiner, RS: required space for canine and premolars, SD: standard deviation