| in order to protect them | 6 | purpose |
| especially | 4 | degree |
| to prevent dental cavities | 3 | purpose |
| fluoride → be → necessary | 21 |
| fluoride → be → recommended | 3 |
| negative | neutral | positive |
| 0.235 | 0.573 | 0.192 |
| Raw frequency | 24 |
| Normalized frequency | 0.416 |
| Modifier score | 0.000 |
| Perplexity | 28.614 |