| during the period of tooth development | 5 | temporal |
| from several foods | 4 | other |
| from pollution | 4 | cause |
| fluoride → be → ingested | 48 |
| fluoride → be ingested in → large amounts | 4 |
| fluoride → be ingested in → large quantities | 3 |
| negative | neutral | positive |
| 0.549 | 0.412 | 0.038 |
| Raw frequency | 55 |
| Normalized frequency | 0.582 |
| Modifier score | 0.000 |
| Perplexity | 46.271 |