Thanks for sharing this. One of the things I found most interesting about the amazing WWI “filmed on location” documentary They Shall Not Grow Old (using colorized footage from the war with voices added based on lip-reading analysis), was the horrid state of the soldiers’ teeth. Apparently candy and other sugary food was widespread enough a hundred years ago, and dental care rare enough, that the average person’s mouth was an absolute mess. Watch the documentary and you’ll see what I mean throughout it.
The real cause for bad teeth was lack of flossing after eating.
That’s a fascinating documentary, I’ll watch it again, interesting observation.
https://search.brave.com/videos?q=They%20Shall%20Not%20Grow%20Old
https://www.google.com/search?q=They+Shall+Not+Grow+Old&tbm=vid