The Toothbrush: How a Riot, a Prison Cell and a Chew Stick Changed Everything

The man who created the modern toothbrush industry, William Addis, came up with the idea in 1780 while he was in prison for starting a riot. Looking back, it seems we have a habit of finding clarity in the dark. Last week, we talked about the lightbulb, and that whole epic battle to create not just a bulb, but an entire system of light. The toothbrush... it’s a similar story, but played out on a much, much more intimate scale. It’s not about lighting a city; it’s about the tiny, private space inside your own mouth. I've been sitting with this for a while. The toothbrush. It feels so simple, so self-evident.

Of course you use one. But for almost all of human history, nobody did. And the more I dug into it, the more I realized we're looking at it all wrong. The toothbrush isn't really an object. It's the physical proof of a public health revolution. Its history most resembles the great sanitation movements of the nineteenth century—the building of sewers, the purification of water. It's a story about fighting an invisible enemy, and it required not just a new tool, but a whole new way of thinking about being human. But like any good analogy, that one breaks. And where it breaks… oh, that’s the whole story.

Let’s start before the beginning. For thousands of years, we had the chew stick. The Babylonians were using them back in 3500 B.C. The Egyptians, too—they’ve been found in tombs, buried right alongside their owners. In the Islamic world, it's the miswak, traditionally from the Arak tree. And these weren’t just dumb sticks. Not at all. The wood contains silica, which is abrasive, plus resins and alkaloids and essential oils that have antiseptic properties. It’s a toothbrush and toothpaste all in one. It’s a clever, effective piece of natural technology. But it’s not a toothbrush. Not in the way we think of one.

A chew stick is a personal, almost rustic solution. It’s like having your own private well in the backyard. It works for you. It doesn't scale into a system. The first real bristle toothbrush shows up in China, probably during the Tang Dynasty around the ninth century. And the design is… well, it’s basically perfect from the start. It’s a handle—bone, or bamboo—with bristles embedded in it, set perpendicular. The one thing that’s changed is the source of those bristles. They were using the hair from the back of a hog’s neck. Specifically, a cold-climate hog, because the colder the weather, the stiffer the bristles.

You can’t make this stuff up. Someone had to figure that out. Someone had to be the first person to say, “You know what would be good for scrubbing my teeth? Hair from a Siberian pig.” This invention, this hog-hair brush, slowly made its way to Europe over the next few hundred years, brought by travelers on the Silk Road. But it was an exotic luxury. An oddity. Something for kings and queens. For everyone else, the common method for cleaning your teeth was to take a rough linen cloth, maybe dip it in some salt or soot, and just… rub. It was abrasive, it was inefficient, and it was better than nothing.

Just barely. This is the pre-revolutionary stage of our analogy. This is London before the sewers. A few rich people have fancy solutions, everyone else is just trying to manage the filth. The problem is obvious—bad breath, rotten teeth—but the solution is individual, and mostly, ineffective. For most people, losing your teeth was just a thing that happened. Like your hair going gray. It was an inevitable part of getting old. Then comes William Addis. 1780. He’s in Newgate Prison. And he sees the problem with the cloth-and-soot method firsthand. It's clumsy. It's messy. One evening, he’s watching a guard sweep the floor.

And something clicks. He sees the broom. A handle, with bristles, for getting into corners. He thinks… why not a tiny broom? For the mouth. So he gets a small animal bone left over from his meal. He drills tiny holes in it. He gets some bristles from a guard—the story varies, some say they were from a cow's tail, some say they were pig bristles, but the principle is the same. He painstakingly ties them into little tufts, glues them into the holes with animal fat, and there it is. A prototype. When he gets out of prison, he doesn't go back to rioting. He starts a business. He starts making toothbrushes.

And that company, under the name Wisdom Toothbrushes, is still around today. Addis created the first mass-produced toothbrush. He’s the person who turned it from a royal curiosity into a commercial product. But even then, it was a niche item. It was still expensive. And the bristles… the bristles were still a problem. Animal hair is hollow. It absorbs water. It stays wet. It’s a perfect little hotel for bacteria to grow in. So you’re cleaning your teeth… with a bacteria-laden brush. Not ideal. The real shift, the thing that kicked the revolution into high gear, wasn't a new brush. It was a new idea.

Germ theory. Suddenly, in the late nineteenth century, thanks to people like Louis Pasteur and Robert Koch, we understood that the world was teeming with invisible life. Bacteria. Microbes. And some of them made us sick. This changed everything. It’s the moment the sanitation analogy becomes crystal clear. Before, people wanted sewers to get rid of the bad smell, the “miasma.” After, they understood they were fighting cholera and typhoid in the water itself. It was the same for teeth. Before germ theory, you cleaned your teeth to get rid of food bits, to stop bad breath, maybe for the look of it.

It was cosmetic. After germ theory, you were fighting decay. You were fighting infection. You were fighting an invisible army of microbes that wanted to rot your teeth out of your head. The stakes got a whole lot higher. And right on cue, the technology arrived to match the new threat. February twenty-fourth, nineteen thirty-eight. A company called DuPont starts selling something called “Doctor West’s Miracle-Tuft Toothbrush.” The miracle wasn’t the handle. It was the bristles. They weren’t made from a pig or a badger anymore. They were made from a brand new synthetic fiber DuPont had invented.

They called it Nylon. This was the game-changer. Wallace Carothers and his team at DuPont had created a material that was, for the purpose of a toothbrush, perfect. Nylon bristles could be made to a specific, uniform thickness and stiffness. They didn't absorb water. They dried quickly. They were cheap to produce. And most importantly, they were hygienic. They were solid filaments, with nowhere for bacteria to hide. This is the equivalent of modern water chlorination in our sanitation analogy. It’s the technological leap that makes the public health promise a reality. Now, you could have a truly clean, effective, affordable tool to fight the microbial enemy.

And they got obsessive about the details. Oh, I love this part. They realized the raw nylon filaments had sharp edges, which could damage gums. So they developed a process to end-round every single bristle, to put a tiny, smooth, polished dome on the tip of each one. They studied the angles of the tufts, the shape of the head, the flex of the handle. The toothbrush became a subject of intense scientific and engineering focus. It was no longer a bone with some hairs stuck in it. It was a precision instrument for oral hygiene. So by the nineteen forties, all the pieces are in place. We have the tool—the nylon brush.

We have the motive—germ theory. We have a public that is increasingly aware of health and hygiene. The revolution should be complete. Everyone should be brushing their teeth. But they weren't. Not really. Not as a habit. Not twice a day. Having the tools for a revolution and actually having the revolution are two different things. You can build the sewers, but you still have to convince people to connect their homes to them. You can invent the perfect toothbrush, but you still have to convince hundreds of millions of people to put this thing in their mouth every single day. And this… this is where the analogy with sanitation breaks.

And the real, stranger story begins. The problem was desire. Nobody had to be taught to desire clean water. The benefit is immediate and obvious. But a clean mouth? The benefit—avoiding a cavity ten years from now—is abstract and distant. The task itself is a bit of a chore. So how do you get people to do it? You don't sell them health. You sell them a feeling. Enter a man named Claude C. Hopkins. He was an advertising legend in the early twentieth century. And in the nineteen-teens, a friend came to him with a new toothpaste. It was called Pepsodent. Hopkins wasn't interested at first. The toothpaste market was dead.

Dozens of brands had failed. But his friend was persistent, so Hopkins agreed to take on the campaign. What he did changed modern advertising forever. And it’s the single biggest reason you brushed your teeth this morning. Hopkins read every dental textbook he could find. He spent weeks just learning about teeth. And he stumbled across the concept of the mucin plaque on teeth—that filmy coating you can feel if you run your tongue over your teeth right now. Go ahead, do it. That. That film. Dentists knew about it. But nobody else cared. It was just… there. Hopkins saw gold. He didn't call it mucin plaque.

He called it "the film." He made it the villain of his entire campaign. His ads said things like: "Just run your tongue across your teeth. You’ll feel a film. That’s what makes your teeth look ‘off color’ and invites decay." He created a cue—that feeling of film. And then he offered the reward: the beautiful, clean, slick feeling of your teeth after you used Pepsodent. The toothpaste contained citric acid and other chemicals that were quite abrasive, so it was VERY good at removing that film, leaving an intensely clean, tingling sensation. He created a habit loop. Cue: feel the film. Routine: brush with Pepsodent.

Reward: enjoy that lovely, slick, tingly feeling. He created a neurological craving. People started to miss the feeling if they forgot to brush. Within ten years, Pepsodent was one of the best-known products on Earth, and Hopkins was one of the richest men in advertising. He hadn't just sold toothpaste. He had installed a habit into the brains of a hundred million people. And the toothbrush was the razor. The toothpaste was the shaving cream. They were a system. The brush became the indispensable tool for delivering that craving, that reward. The twice-a-day ritual wasn't born from public health pamphlets.

It was born from an ad man manufacturing a desire. That's the shocking turn. The great public health revolution of oral hygiene wasn't primarily driven by doctors or dentists or governments. It was driven by capitalism's uncanny ability to find a psychological trigger and pull it. The health benefits were real, but they were almost a side effect. The primary product being sold wasn't health. It was beauty. It was a sensation. It was relief from a problem you didn't even know you had until an ad told you about it. So when we look back at the toothbrush, we're not just looking at a piece of plastic.

We're looking at a monument. It's a monument to our victory over tooth decay, yes. But it's also a monument to Claude Hopkins. It's a monument to the power of a manufactured craving. We think of our daily habits as rational choices. I brush my teeth because it's good for me. And that's true. But it's not the whole truth. We brush because an advertiser a century ago found a way to make us want to. He found a way to make the absence of brushing feel… wrong. Uncomfortable. The retrospective here, what it teaches us, is that the adoption of even the most beneficial technologies is rarely a simple story of progress.

It's messy. It's psychological. The path from William Addis carving a bone in a prison cell to you standing over your sink this morning wasn't a straight line. It was a winding road paved with hog hair, nylon filaments, and a deep understanding of human desire. The object itself is almost the least important part of the story. The real innovation was the ritual. And the genius was in convincing us that the ritual was our own idea. The most successful tool in modern medicine isn't a scalpel or a vaccine; it's a two-dollar piece of plastic that taught us how to want to be clean.