Table 3 Distribution of types of developmental defects of enamel (DDE) according to tooth type (n=1221)

Type of defect

Normal

89.7(200)

90.7(485)

87.1(330)

88.2(696)

70.9(713)

69.3(692)

88.0(690)

86.5(326)

89.1(476)

89.1(197)

Demarcated opacities

0.0(0)

0.0(0)

0.0(0)

0.9(7)

2.3(23)

3.5(35)

0.3(2)

0.0(0)

0.0(0)

0.0(0)

Diffuse opacities

8.5(19)

7.1(38)

7.7(29)

8.9(70)

24.4(245)

24.6(246)

9.1(71)

8.5(32)

8.2(44)

8.6(19)

Hypoplasia

1.8(4)

2.2(12)

5.3(20)

2.0(16)

2.3(23)

2.4(24)

2.7(21)

5.0(19)

2.6(14)

2.3(5)

Total

100(223)

100(535)

100(379)

100(789)

100(1004)

100(997)

100(784)

100(377)

100(534)

100(221)

Tooth

85

84

83

82

81

71

72

73

74

75

% (n)

% (n)

% (n)

% (n)

% (n)

% (n)

% (n)

% (n)

% (n)

% (n)

Type of defect

Normal

89.6(224)

90.0(479)

85.4(310)

95.4(661)

95.8(1162)

95.6(1158)

94.9(654)

86.2(306)

88.8(478)

90.4(225)

Demarcated opacities

0.0(0)

0.0(0)

0.3(1)

0.2(2)

0.9(10)

0.9(10)

0.2(2)

0.6(2)

0.2(1)

0.0(0)

Diffuse opacities

7.6(19)

7.0(37)

7.7(28)

2.5(17)

2.3(28)

2.4(29)

2.9(20)

7.9(28)

8.2(44)

7.2(18)

Hypoplasia

2.8(7)

3.0(16)

6.6(24)

1.9(13)

1.1(13)

1.2(14)

1.9(13)

5.4(19)

2.8(15)

2.4(6)

Total

100(250)

100(532)

100(363)

100(693)

100(1213)

100(1211)

100(689)

100(355)

100(538)

100(249)