ONVI.

The company that put a camera in your mouth

ONVI, LLC. is a small, stubborn oral health technology company headquartered in Chicago. Its flagship product, Prophix, is a toothbrush with a 1080p camera buried in the handle. Brush, and a live video feed of your own molars appears on your phone. The spots you always miss stop being theoretical.

In August 2025, the company put a number on its ambition: a $25 million Series A to commercialize not one gadget but six interoperable products and a software platform it calls, without flinching, "the operating system for oral health." It is a big phrase for a company of a handful of people. It is also, if you sit with it, not obviously wrong.

Six months of guessing

Here is the tension ONVI exists to resolve. You see a dentist twice a year, if you are diligent. Between those visits - all 363 other days - your oral health is a black box. You brush in the dark, floss on faith, and find out how it went only when someone in a paper mask tells you.

Most of dentistry is built around the appointment. ONVI's argument is that the appointment is the least interesting part. The decay, the recession, the missed quadrant - those happen in the long, unwatched stretch between chairs. Close that visibility gap, the thinking goes, and you change the math of prevention. The most-used health device in the house is the toothbrush, and almost nobody had bothered to connect it to anything.

A dentist with 40 years and a microscope

ONVI did not come from a hardware lab. It came from a chair. Founder and CEO Dr. Craig S. Kohler - DDS, MBA, and a Master in the Academy of General Dentistry - spent four decades practicing, and more than 20 years recording his own procedures through surgical microscopes. He had been looking inside mouths on video long before "teledentistry" was a word anyone said out loud.

The bet was simple and slightly heretical: take the lens that lived in his operatory and hand it to the patient. Let people watch their own mouths the way he had watched them for years. Kohler is the inventor behind ONVI's foundational technologies - microscope-guided hygiene, intraoral imaging, workflow-integrated diagnostics - which now sit under a portfolio of 39 issued patents. He funded roughly $4 million of the early R&D himself before raising outside money. Whether that is conviction or stubbornness depends on how the next two years go.

Not a gadget - a system

The easy story is the camera toothbrush. The real story is everything ONVI hung around it. The company designed six pieces meant to work together: hardware that captures what is happening in your mouth, and software that does something useful with it.

Prophix Core streams that 1080p feed to an app, lets you photograph the spot that worries you, and tracks how it changes. It ships with interchangeable heads - a brush, a prophy cup, a mirror, a rubber tip. Prophix Professional takes the same idea into the dental office. And ONView, the HIPAA-compliant software layer, is where the data stops being a novelty and becomes a record your dentist can actually read.

Patents, pilots, and a number

Skepticism is fair. Connected toothbrushes are a graveyard of good intentions, and "operating system for X" is the kind of phrase that ages badly. So what is actually here? A portfolio of 39 issued patents. Roughly $4 million in founder-funded R&D before any institutional check. A $25 million Series A distributed to accredited investors through Deal Box under a Reg D 506(c) offering. Select units in pilot production, with the manual brush and core Prophix described as retail-ready.

It is not a billion-dollar story yet. It is a long-game story, told by a clinician who has been building the same idea since before the market was ready for it.

Three ways to get paid

ONVI is not betting everything on one toothbrush selling well, which is sensible, because betting everything on one toothbrush selling well is how most connected-hardware companies end up as cautionary tales. The plan runs on three tracks at once. There is direct-to-consumer and retail, where Prophix and the MOTSY brushes compete for the same bathroom shelf as Oral-B, Philips Sonicare, Colgate, and Quip. There is a clinical channel, where Prophix Professional is sold into dental practices as an imaging and hygiene tool. And there is software - ONView - which is the part that could matter most, because hardware sells once and a subscription bills forever.

That last track is also the hardest to fake. A camera in a toothbrush is a clever demo. A HIPAA-compliant platform that dentists trust, patients keep using, and payers will reimburse is a business. ONVI has wired the two together deliberately: the hardware exists to generate the data, and the data exists to make the software worth paying for. Whether dentists adopt it at scale is the unanswered question hanging over the entire enterprise - and the one the Series A is meant to answer.

Prevention beats the drill

Strip away the hardware and ONVI is making a claim about where health actually happens: not in the appointment, but in the routine. The company's stated mission is to close the data visibility gap in oral health - to connect prevention, clinical insight, and patient engagement across the home and the clinic. The drill is what happens when prevention fails. ONVI is betting on fewer drills.

It is a quietly radical reframe. Dentistry has spent a century optimizing the repair. ONVI is more interested in the 363 days nobody was watching - and in giving both patient and dentist something to look at when they finally do.

If the brush starts watching back

Wearables did not become important because people loved counting steps. They became important because passive, continuous data quietly rewrote how we think about the body. ONVI is making the same bet about the mouth - that the device you already use twice a day could become a stream of clinical-grade information, flowing to the one person trained to act on it.

Whether ONVI is the company that gets there is an open question. Connected hardware is hard, retail is harder, and patience is expensive. But the underlying observation is difficult to unsee once you have seen it: you have brushed your teeth tens of thousands of times, and you have never actually watched.

So back to the sink. It is 11 p.m. You pick up the brush. This time the phone lights up, the feed appears, and the back-left molar you have ignored your entire life is suddenly, undeniably, on camera. The dark spot is no longer hypothetical. That is the whole company, in one slightly uncomfortable frame.