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Mean number (N) and standard deviation (SD) of erupted left lower mandible teeth (dental state) in the school children of Kupang (West-Timor).
| Age (Years) | Girls | Boys | ||
|---|---|---|---|---|
| N | SD | N | SD | |
| 6 | 2.1 | 1.1 | 1.5 | 0.9 |
| 7 | 3 | 0.9 | 2.4 | 0.9 |
| 8 | 3.7 | 0.9 | 3 | 0.9 |
| 9 | 4.7 | 1.4 | 4.1 | 1.1 |
| 10 | 5.8 | 1.2 | 5.1 | 1.2 |
| 11 | 6.5 | 0.9 | 6.1 | 1.1 |
| 12 | 6.8 | 0.8 | 6.4 | 1 |
