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Table 3 Distribution of hypomineralization features in index teeth of MIH-affected children according to EAPD diagnostic criteria (2003)

From: Molar incisor hypomineralization, prevalence, pattern and distribution in Sudanese children

Index tooth

White/creamy demarcated opacities with no PEB

N (%)

White/creamy demarcated opacities with PEB

N (%)

Yellow/brown demarcated opacities with no PEB

N (%)

Yellow/brown demarcated opacities with PEB

N (%)

Atypical restorations

N (%)

Missing due to MIH

N (%)

Total

N (%)

Chi square

p value

16

32 (13.6%)

15 (20.3%)

8 (28.6%)

7 (22.6%)

0 (0%)

0 (0%)

62 (16.5%)

200.80

 < 0.001a

12

4 (1.7%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

4 (1.1%)

NA

NA

11

39 (16.6%)

2 (2.7%)

0 (0%)

1 (3.2%)

0 (0%)

0 (0%)

42 (11.2%)

170.3

 < 0.001a

21

32 (13.6%)

1 (1.4%)

0 (0%)

1 (3.2%)

0 (0%)

0 (0%)

34 (9.0%)

174.7

 < 0.001a

22

7 (3%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

7 (1.9%)

215.4

 < 0.001a

26

32 (13.6%)

10 (13.5%)

8 (28.6%)

6 (19.4%)

0 (0%)

0 (0%)

56 (14.9%)

289.52

 < 0.001a

36

26 (11.1%)

16 (21.6%)

6 (21.4%)

12 (38.7%)

1 (33.3%)

2 (40%)

63 (16.8%)

102.59

 < 0.001a

32

9 (3.8%)

0 (0%)

1 (3.6%)

0 (0%)

0 (0%)

0 (0%)

10 (2.7%)

NA

NA

31

9 (3.8%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

9 (2.4%)

511.03

 < 0.001a

41

8 (3.4%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

8 (2.1%)

105.98

 < 0.001a

42

14 (6.0%)

0 (0%)

1 (3.6%)

0 (0%)

0 (0%)

0 (0%)

15 (4%)

294.6

 < 0.001a

46

23 (9.8%)

30 (40.5%)

4 (14.3%)

4 (12.9%)

2 (66.7%)

3 (60%)

66 (17.6%)

215.4

 < 0.001a

Total

235 (100%)

74 (100%)

28 (100%)

31 (100%)

3 (100%)

5 (100%)

376 (100%)

86.0

 < 0.001a

  1. N, number; NA, not applicable; MIH, molar incisor hypomineralization; PEB, Post-eruptive breakdown
  2. aHighly significant differences were noted (p < 0.05)