| Clue | Source | Date |
|---|---|---|
| Dental problem (illustrated by this puzzle’s long Across answers) | Wall Street Journal | 22 Oct 2019 |
| Dental problem | New York Times | 16 Apr 2019 |
| Dental problem | ||
| Dental problem (illustrated by this puzzle's long Across answers) | ||
| Condition contributed to by a lack of [circled letters] | New York Times | 05 Mar 2017 |
| Condition contributed to by a lack of [circled letters] |