Fun Fact: Toothpaste isn’t actually doing much in terms of cleaning. Its job is more chemical treatment
The active cleaning if brushing your teeth is the brushing itself; Scraping away plaque and excess food.
People have been “brushing” their teeth for centuries in one way or another. The most primitive I can think of are things like chew sticks; Softwood twigs people chew on, and use to scrape the tongue.
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