Table 3 Mean dental age (±SD), difference between chronological age (CA) and dental age (DA) in years (mean ± SD, median, 1. and 3. quartile and interquartile range), using the Cameriere method

6

7.16 (±1.41)

−1.04

−1.15

−1.81

−0.15

−1.96

0.004*

7.73 (±0.92)

−1.55

−1.75

−2.18

−1.03

−3.21

0.004*

7

8.40 (±1.34)

−1.38

−1.82

−2.09

−0.13

−2.22

0.004*

8.52 (±1.18)

−1.49

−1.76

−2.38

−0.63

−3.01

0.001*

8

9.32 (±0.90)

−1.31

−1.44

−1.81

−0.83

−0.98

<0.001*

9.48 (±0.68)

−1.52

−1.70

−1.85

−1.03

−2.88

<0.001*

9

10.15 (±0.76)

−1.06

−1.08

−1.53

0.63

2.16

<0.001*

10.17 (±0.52)

−1.16

−1.17

−1.46

−0.83

−2.29

<0.001*

10

10.96 (±0.48)

−0.91

−0.97

−1.19

−0.62

−1.81

<0.001*

10.67 (±0.46)

−0.67

−0.72

−1.07

−0.27

−1.34

<0.001*

11

11.05 (±0.50)

−0.02

−0.08

−0.49

0.31

0.8

0.489

10.55 (±0.48)

0.50

0.40

−0.07

0.95

1.02

0.001*

12

11.01 (±0.65)

0.99

0.86

0.43

1.57

1.14

<0.001*

10.26 (±0.68)

1.75

1.87

0.99

2.25

1.26

<0.001*

13

10.49 (±0.77)

2.51

2.69

1.63

3.27

1.64

<0.001*

10.14 (±0.61)

2.72

2.90

2.29

3.16

0.87

<0.001*

14

10.02 (±0.75)

3.83

3.88

3.32

4.64

1.32

<0.001*

9.46 (±0.54)

4.51

4.65

3.97

5.14

1.17

0.002*

Total

10.19 (±1.34)

0.07

−0.41

−1.20

1.06

2.80

0.314

9.92 (±1.01)

0.08

−0.50

−1.29

1.26

2.55

0.480