The Truth Behind Ancient Rome’s Radiant Smiles
This article was adapted from original ideas published by Visit Naples and Amalfi Coast Travel Tips.
Walk through the ruins of Pompeii long enough and you start noticing the small things. Not the frescoes, not the grand villas, but the odd domestic detail that tells you how people actually lived. Dental care turns out to be one of them, and it’s a stranger story than most guidebooks let on.
Wealthy Romans wanted white teeth. Badly, in fact. And the method they landed on still catches visitors off guard today. It was urine.
A Prized Import
Not any urine, mind you. There was a hierarchy to it, and Iberian urine sat near the top, with Portuguese sources apparently commanding the best reputation of all. Merchants shipped it across the empire much as they did wine or olive oil, and buyers paid for it accordingly. I find this detail almost funnier than the practice itself. Somewhere in Rome, a household was genuinely comparing suppliers, weighing up which region’s produce whitened teeth best, the way we might argue over which olive oil to buy at the market.
The reasoning, such as it was, held that stronger urine meant a brighter result. Nobody was measuring pH levels. They simply paid more for the reputation.
The Chemistry Nobody Expected
Here’s the thing though. It actually worked, and not by accident either. Urine, left to age, breaks down into ammonia, which happens to be a genuinely capable cleaning agent even by modern standards. It lifts stains. It kills bacteria. Used carefully, it bleaches enamel. Roman households had, quite unknowingly, hit on a formula that dentists centuries later would recognise as sound chemistry, long before anyone understood why it worked at all.
A Poet’s Sharp Wit
Not everyone found the habit dignified. Catullus certainly didn’t. He wrote about a man named Egnatius who apparently grinned at every possible occasion purely to flash his gleaming teeth, and Catullus, who rarely missed a target, mocked him for it without mercy, suggesting the shine gave away exactly how it was achieved. Roman satire had teeth of its own, evidently, and two thousand years later the joke still lands.
Pompeii’s Own Formula
Archaeologists digging through Pompeii have pieced together the local recipe, and it’s rather more considered than you’d expect. Honey went in for sweetness. Vinegar added extra cleaning power. Crushed bone or oyster shell provided the abrasive scrub needed to actually polish the teeth. Mix it together and you get something not far removed from an early toothpaste, built entirely from whatever the household had on hand that week.
A Familiar Pursuit
Most visitors to Pompeii spend their time on the mosaics and the villas, understandably. But it’s often the smaller domestic habits, tucked away in the excavation reports, that say the most about a culture. People have always been willing to go to some lengths for a good smile. The Romans reached for urine and crushed shells. We reach for strips and laser appointments instead. Different centuries, same pursuit.
