| in color | 19 | other |
| over time | 14 | temporal |
| due to a number of factors | 9 | cause |
| tooth → be → yellowish | 49 |
| tooth → become → yellowish | 35 |
| tooth → look → yellowish | 30 |
| tooth → appear → yellowish | 25 |
| tooth → turn → yellowish | 15 |
| tooth → have → yellowish tinge | 12 |
| tooth → get → yellowish | 11 |
| tooth → have → yellowish tint | 4 |
| tooth → be → yellowish colored | 3 |
| tooth → appear → yellowish color | 3 |
| negative | neutral | positive |
| 0.551 | 0.377 | 0.072 |
| Raw frequency | 187 |
| Normalized frequency | 0.535 |
| Modifier score | 0.621 |
| Perplexity | 92.511 |