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Progress in Orthodontics

Table 2 Analysis of method reliability

From: Zygomaticomaxillary modifications in the horizontal plane induced by micro-implant-supported skeletal expander, analyzed with CBCT images

Parameter

Unit

Rater SD

Error SD

Rater CV (%)

Error CV (%)

ICC (%)

Linear measurements

1

Anterior inter-maxillary distance (AIMD)

mm

0.24

0.39

1.22

1.97

96.7

2

Posterior inter-zygomatic distance (PIZD)

mm

0.35

0.72

0.31

0.64

95.9

3

Posterior inter-temporal distance (PITD)

mm

0.17

0.57

0.15

0.49

92.6

Angular measurements

4

Right zygomaticotemporal angle (Rt ZTA)

°

0.82

1.14

0.61

0.85

93.9

5

Left zygomaticotemporal angle (Lt ZTA)

°

0.83

1.64

0.62

1.22

90.4

6

Right angle of the zygomatic process (Rt ZPA)

°

0.19

0.93

0.21

1.04

97.7

7

Left angle of the zygomatic process (Lt ZPA)

°

0.43

1.19

0.49

1.33

96.6

  1. SD Dahlberg standard deviation, Rater CV rater coefficient of variation = rater SD/overall mean, Error CV error coefficient of variation = error SD/overall mean, ICC intra-class correlation coefficient = patient variance/total variance
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