Nolla Stages

UR

UL

LR

LL

 

 

For age group 5-10 years

 

 

N

Mean age
(95%CI)

SD

N

Mean age
(95%CI)

SD

N

Mean age
 (95%CI)

SD

N

Mean age
 (95%CI)

SD

0

49

8.75
(8.32-9.19)

1.51

48

8.75
(8.30-9.19)

1.52

28

8.03
(7.44-8.62)

1.51

34

8.35
(7.78-8.92)

1.63

1

3

9.73
(8.13-11.33)

0.64

2

10.10
(8.82-11.37)

0.14

9

9.72
(8.86-10.57)

1.11

3

9.66
(8.23-11.10)

0.57

2

1

10.00

0

4

9.52
(8.64-10.40)

0.55

15

9.68
(9.38-9.98)

0.54

16

9.70
(9.41-9.98)

0.53

3

10

9.85
(9.39-10.30)

0.19

9

9.83
(9.32-10.34)

0.66

11

9.91
(9.48-10.34)

0.64

10

9.85
(9.39-10.30)

0.63

 

 

 

For age group 11-15 years

 

 

 

 

N

Mean age
 (95%CI)

SD

N

Mean age
 (95%CI)

SD

N

Mean age
 (95%CI)

SD

N

Mean age
 (95%CI)

SD

0

37

12.69
(12.26-13.12)

1.28

35

12.65
(12.16-13.13)

1.41

11

12.67
(11.87-13.47)

1.19

17

12.99
(12.37-13.60)

1.19

1

4

12.25
(11,45-13.04)

0.50

2

12.50
(6.14-18.85)

0.70

6

12.18
(10.96-13.40)

1.16

8

11.77
(11.02-12.52)

0.89

2

15

11.98
(11.41-12.56)

1.03

15

12.13
(11.48-12.78)

1.17

25

12.39
(11.88-12.90)

1.23

19

12.35
(11.78-12.92)

1.18

3

51

12.63
(12.29-12.97)

1.21

61

12.68
(12.40-12.96)

1.09

54

12.36
(12.07-12.65)

1.05

53

12.41
(12.12-12.70)

1.04

4

28

13.50
(13.05-13.95)

1.16

21

13.51(13.02-14.01)

1.08

43

13.54
(13.18-13.90)

1.15

40

13.47
(13.08-3.86)

1.21

5

14

13.85
(13.19-14.51)

1.14

15

13.93
(13.30-14.56)

1.14

11

13.91
(13.11-14.72)

1.19

12

13.84
(13.09-14.58)

1.17

6

24

13.22
(12.75-13.69)

1.11

25

13.29
(12.82-13.77)

1.14

21

13.22
(12.69-13.75)

1.15

22

13.35
(12.81-13.88)

1.19

7

12

13.98
(13.21-14.75)

1.21

12

13.77
(12.83-14.71)

1.47

16

14.05
(13.48-14.61)

1.06

15

13.88
(13.14-14.63)

1.34

8

4

14.75
(13.95-15.54)

0.50

4

14.75(13.95-15.54)

0.50

3

15.00
(15-15)

0.00

3

15.00
(15-15)

0.00

9

2

15.00
(15-15)

0.00

2

15.00(15-15)

0.00

2

15.00
(15-15)

0.00

2

15.00
(15-15)

0.00

10

1

15.00
(-)

--

1

15.00
(-)

--

1

15.00
(-)

--

1

15.00
(-)

--

N = Number of third molars, UR-upper right third molar, UL- upper left third molar , LR- lower right third molar, LL- lower left third molar, SD – standard deviation
Table 3A: Number of third molars and mean ages at which each Nolla stage is reached in study groups of 5-10 years and 11-15 years.