To mimic that effect until late in the 20th century dentures contained added uranium. Sadly sometimes they would fluoresce in green or yellow. https://www.orau

To mimic that effect until late in the 20th century dentures contained added uranium. Sadly sometimes they would fluoresce in green or yellow. https://www.orau.org/ptp/collection/consumer%20products/dentures.htm https://www.orau.org/ptp/collection/consumer%20products/dent... And the amusing inverse! https://m.imgur.com/gallery/lcmSI https://m.imgur.com/gallery/lcmSI