| Clue | Source | Date |
|---|---|---|
| Toothpaste ingredient | Newsday | 09 Jul 2023 |
| Toothpaste chemical | The Telegraph Quick | 26 Mar 2023 |
| Drinking water additive | Premier Sunday | 08 Nov 2020 |
| Salt in your toothpaste? Of course! Reported to clear bacterium in the interior | ||
| Salt, or in water perhaps, alkaline base | ||
| Enamel strengthener | ||
| Crest component | ||
| Crest component | ||
| Toothpaste additive | ||
| Protector of some canines | ||
| Tooth-saving compound? | ||
| Toothpaste ingredient. | ||
| Controversial compound. |