Table 3.
Distribution of types of developmental defects of enamel (DDE) according to tooth type (n=1221)
|
Tooth |
55 |
54 |
53 |
52 |
51 |
61 |
62 |
63 |
64 |
65 |
|---|---|---|---|---|---|---|---|---|---|---|
| % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | % (n) | |
|
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) |