Table 3 Distribution of types and size of developmental defects of enamel according to tooth type for affected children (n = 20)
From: Developmental defects of enamel in primary teeth - findings of a regional German birth cohort study
Type of defect | Children (n = 20) | Tooth | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
55/65 | 54/64 | 53/63 | 52/62 | 51/61 | 71/81 | 72/82 | 73/83 | 74/84 | 75/85 | ||
Demarcated opacities % (n) | 75.0 (15) | ||||||||||
White | 35.0 (7) | 15.0 (3) | 5.0 (1) | 5.0 (1) | 5.0 (1) | 10.0 (2) | 10.0 (2) | 0.0 (0) | 10.0 (2) | 0.0 (0) | 15.0 (3) |
Yellow | 40.0 (8) | 15.0 (3) | 5.0 (1) | 10.0 (2) | 0.0 (0) | 5.0 (1) | 10.0 (2) | 0.0 (0) | 15.0 (3) | 5.0 (1) | 15.0 (3) |
Brown | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |
Hypomineralised second primary molar | 30.0 (6) | 30.0 (6) | - | - | - | - | - | - | - | - | 30.0 (6) |
Diffuse opacities % (n) | 5.0 (1) | ||||||||||
Lines | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |
Patchy | 5.0 (1) | 5.0 (1) | 0.0 (0) | 5.0 (1) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 5.0 (1) | 0.0 (0) | 5.0 (1) |
Hypoplasia % (n) | 15.0 (3) | ||||||||||
Pits | 15.0 (3) | 5.0 (1) | 0.0 (0) | 10.0 (2) | 0.0 (0) | 10.0 (2) | 15.0 (3) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |
Grooves | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |
Larger areas | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |
Combination % (n) | 5.0 (1) | 5.0 (1) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 5.0 (1) |
Size | |||||||||||
\( <\frac{1}{3} \) tooth surface | 90.0 (18) | 35.0 (7) | 10.0 (2) | 30.0 (6) | 5.0 (1) | 25.0 (5) | 35.0 (7) | 0.0 (0) | 30.0 (6) | 5.0 (1) | 35.0 (7) |
\( \frac{1}{3}-\frac{2}{3} \) tooth surface | 10.0 (2) | 10.0 (2) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 5.0 (1) |
\( >\frac{2}{3} \) tooth surface | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) | 0.0 (0) |