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Table 1 Systematic and casual errors (dependent t -tests and Dahlberg’s formula)

From: Association between tooth size and interarch relationships in children with operated complete unilateral cleft lip and palate

Mesiodistal crown diameter

First measurement

Second measurement

P

Dahlberg

n= 30

n= 30

Mean

SD

Mean

SD

Right central incisor

8.39

0.81

8.46

0.85

0.067

0.13

Left central incisor

8.32

0.01

8.37

0.55

0.090

0.10

Right lateral incisor

6,83

0.68

6.90

0.74

0.469

0.22

Left lateral incisor

6.46

00.1

6.44

0,64

0.667

1.16

Right first molar

10.12

00.1

10.07

0.68

0.540

0.29

Left first molar

9.92

00.1

10.00

0.62

0.240

0.26