system
Given the following post, respond as if you're commenting on Reddit:
human
What did early humans do in terms of oral hygiene?

Might be a silly question but early humans, they surely got cavities? Did they have a form of brushing, or did they just deal with tooth decay?
gpt
I watched a documentary of dentistry awhile back and it had a study a dentist did back in the late 1800s where he went to Africa every five years and took pictures of peoples smile. At the beginning all the smiles were bright and vibrant with little to no dental care but as western influence increased and their diets changed to include more sugar and what not the smiles got worse and worse until their teeth were completely destroyed. It was pretty interesting to see. Before we started eating all the crap we do now days we really didn't need to do much to our teeth.