Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Exclusion criteria | Number of exposed children | Number of unexposed children |
| Study base | 232 | 272 |
| Diseased | 2 | 3 |
| Emigrated | 7 | 5 |
| No response from dentist | 5 | 5 |
| Incomplete dental chart | 4 | 4 |
| Total enrolled in the study | 214 | 255 |
