Did the Romans brush teeth with urine?

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Tags

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2. #clean
3. #strips
4. #clear
5. #their
6. #wrote
7. #people
8. #revealed
9. #brighten
10. #pearly
11. #catullus
12. #about
13. #whites
14. #ancient
15. #romans
16. #urine
17. #while
18. #whiten
19. #whitening
20. #teeth