This is an amazing article, published in the Japan Times. It’s well worth a read. Check it out!
The article cites smoking and modern medication as causes of gum disease. These days, there is a massive industry in oral hygiene, with specialized tooth brushes, tooth pastes, and mouth washes, plus an assortment of inter-dental brushes etc – all of these were not available to the Romans. So I wonder if the modern diet contributes to gum disease?