Table 1.
Demographic data of the study population.
| Variables | N (%) | |
|---|---|---|
| Gender | Female | 281 (51, 6) |
| Male | 264 (48, 4) | |
|
| ||
| Age | 6 years | 84 (15, 4) |
| 7 years | 75 (13, 7) | |
| 8 years | 80 (14, 7) | |
| 9 years | 80 (14, 7) | |
| 10 years | 80 (14, 7) | |
| 11 years | 73 (13, 4) | |
| 12 years | 73 (13, 4) | |
|
| ||
| Mean age (DP) | 8.93 (1.99) | |
|
| ||
| Monthly family income | No income | 2 (0, 5) |
| Up to 1 salary (200 USD) | 53 (12, 4) | |
| From 1 to 2 salaries (200–400 USD) | 138 (32, 2) | |
| From 2 to 3 salaries (400–600 USD) | 132 (30, 8) | |
| From 3 to 4 salaries (600–800 USD) | 69 (16, 1) | |
| From 5 to 10 salaries (1.000–2.000 USD) | 23 (5, 4) | |
| 10 to 20 salaries (2.000–4.000 USD) | 9 (2, 1) | |
| More than 20 salaries (>4.000 USD) | 2 (0, 5) | |
|
| ||
| Parental education level (mean) | Less than 8 years | 158 (29, 0) |
| Over 8 years | 387 (71, 0) | |
|
| ||
| DMFT | DMFT = 0 | 425 (78, 0) |
| DMFT > 0 | 120 (22, 0) | |
|
| ||
| dmft | dmft = 0 | 317 (58, 2) |
| dmft > 0 | 228 (41, 8) | |
|
| ||
| MIH | MIH = 0 | 467 (85, 7) |
| MIH > 0 | 78 (14, 3) | |
|
| ||
| MIH | Public school | 56 (13.7) |
| Private school | 22 (16.2) | |
|
| ||
| DMH | DMH = 0 | 532 (97, 6) |
| DMH > 0 | 13 (2, 4) | |
|
| ||
| DF | DFs = 0 | 422 (77, 4) |
| DF > 0 | 123 (22, 6) | |
DMFT: decayed, missing or filled permanent teeth; dmft: decayed, missing or filled deciduous teeth; DMH: deciduous molar hypomineralization; DF: dental fluorosis.