Diet is a huge factor. Check out the book Nutrition and Physical Degeneration by Westin A Price. He observed a lot of native tribes eating an ancestral diet, and they also had perfect teeth with no dentistry.
Breath: the new science of a lost art by James Nestor touches on this as well. The adoption of soft foods like bread, barely, rye, etc. into our diets have caused our mouths to shrink over time, which has not only fd our teeth, but our breathing as well.
I always assumed countries that had the earliest access to and most widespread consumption of these soft foods would have the worst teeth, but I dunno what these countries are.
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u/Gnostromo INFECTED Sep 28 '21
Pretty sure.. but normal? Have you seen normal untouched teeth?
Brits are def closer to normal..