dentist

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Y Combinator-backed Adra wants to turn all dentists into cavity-finding ‘super dentists’

Like other areas of healthcare, the dental industry is steadily embracing technology. But while much of it is in the orthodontic realm, other startups, like Adra, are bringing artificial intelligence into a dentist’s day-to-day workflow, particularly in finding cavities, of what will be a $435.08 billion global dental services market this year.

The Singapore-based company was founded in 2021, but was an idea that started last year. Co-founder Hamed Fesharaki has been a dentist for over a decade and owns two clinics in Singapore.

He said dentists learn to read X-rays in dental school, but it can take a few years to get good at it. Dentists also often have just minutes to read them as they hop between patients.

As a result, dentists end up misdiagnosing cavities up to 40% of the time, co-founder Yasaman Nematbakhsh said. Her background is in imaging, where she developed an artificial intelligence machine identifying hard-to-see cancers, something Fesharaki thought could also be applied to dental medicine.

Providing the perspective of a more experienced dentist, Adra’s intent is to make every dentist “a super dentist,” Fesharaki told TechCrunch. Its software detects cavities and other dental problems on dental X-rays faster and 25% more accurately, so that clinics can use that time to better serve patients and increase revenue.

Example of Adra’s software. Image Credits: Adra

“We are coming from the eye of an experienced dentist to help illustrate the problems by turning the X-rays into images to better understand what to look for,” he added. “Ultimately, the dentist has the final say, but we bring the experience element to help them compare and give them suggestions.”

By quickly pointing out the problem and the extent of it, dentists can decide in what way they want to treat it — for example, do a filling, a fluoride treatment or wait.

Along with third co-founder Shifeng Chen, the company is finishing up its time in Y Combinator’s summer cohort and has raised $250,000 so far. Fesharaki intends to do more formalized seed fundraising and wants to bring on more engineers to tackle user experience and add more features.

The company has a few clinics doing pilots and wants to attract more as it moves toward a U.S. Food and Drug Administration clearance. Fesharaki expects it to take six to nine months to receive the clearance, and then Adra will be able to hit the market in late 2022 or early 2023.

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Teeth aligner startup Candid opens physical location in SF

Candid, a teeth aligner startup that aims to make straight teeth more accessible and more affordable than Invisalign, is evolving its direct-to-consumer business. In addition to its at-home impression process, Candid recently started enabling people to come into a physical office to get their teeth scans completed.

Today, Candid is opening physical storefronts in San Francisco, Austin, Columbus, Ohio and Santa Monica, Calif. This is in addition to the two locations in New York City, one in Boston and one in West Hollywood, Calif. By the end of next year, Candid aims to have 75 locations across the U.S.

Candid, which 3D prints its FDA-approved aligners, is designed for people who need mild to moderate orthodontic work. It costs $1,900 upfront or $88 per month over two years, while braces can cost up to $7,000 and Invisalign can cost up to $8,000.

In Candid’s physical locations, customers can get their teeth scanned and order aligners within 30 minutes. The studios are operated by Candid’s orthodontists and dental assistants.

This is on the heels of Candid’s $15 million Series A round led by Greycroft last November. SmileDirectClub, a major competitor of Candid, raised $380 million in October at a $3.2 billion valuation.

But Candid doesn’t seem too fazed, having seen 15x growth year over year and expecting to potentially raise more funding in Q1 of next year, CEO Nick Greenfield told TechCrunch.

“The advantage is, if you don’t have access or live two hours away from the city, the impression kit is a viable and effective way,” Greenfield said. “But if you live in a city with a Candid studio, we recommend you come in for a scan.”

This is similar to Uniform Teeth’s strategy. Uniform Teeth, which raised $4 million earlier this year, is a clear teeth aligner startup that competes with the likes of Invisalign and Smile Direct Club. The startup takes a One Medical-like approach in that it provides real, licensed orthodontists to see you and treat your bite.

It’s worth noting that the in-person approach aligns more with the values of the American Association of Orthodontists, which has taken issue with the likes of SmileDirectClub and other teeth-straightening services that don’t require in-person visits with a licensed orthodontist.

As Candid grows and opens more physical locations, it wouldn’t be surprising if the company starts to try to funnel more people through the door than through the virtual shopping cart.

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I visited a teeth-straightening startup and found out I needed a root canal

Going to the dentist can be anxiety-inducing. Unfortunately, it was no different for me last week when I went to discuss Uniform Teeth’s recent $4 million seed funding round from Lerer Hippeau, Refactor Capital, Founder’s Fund and Slow Ventures.

Uniform Teeth is a clear teeth aligner startup that competes with the likes of Invisalign and Smile Direct Club. The startup takes a One Medical-like approach in that it provides real, licensed orthodontists to see you and treat your bite.

“For us, we’re really focused on transforming the orthodontic experience,” Uniform Teeth CEO Meghan Jewitt told me at the startup’s flagship dental office in San Francisco. “There are a lot of health care companies out there that are taking areas that aren’t very customer-centric.”

Jewitt, who spent a couple of years at One Medical as director of operations, pointed to One Medical, Oscar Insurance and 23andMe as examples of companies taking a very customer-centric approach.

“We are really interested in doing the same for the orthodontics space,” she said.

Ahead of the first visit, patients use the Uniform app to take photos of their teeth and their bite. During the initial visit, patients receive a panoramic scan and 3D imaging to confirm what type of work needs to be done.

Last week during my visit, Jewitt and Uniform Teeth co-founder Dr. Kjeld Aamodt showed me the technology Uniform uses for its patient evaluations.

In the GIF above, you can see I received a 3D panoramic X-ray. The process took about 10 seconds and it’s about the same exposure to X-rays as a flight from San Francisco to Los Angeles, Dr. Aamodt said.

“With that information, we’re able to see the health of your roots, your teeth, the bone, your jaw joints, check for anything that could get worse during treatment,” Dr. Aamodt said.

Below, you can see the 3D scan.

Next is looking in-between the teeth. From here, the idea is to get a much more holistic view, Dr. Aamodt said. This is where things got interesting.

If you look at the bottom left of the photo, under my back bottom tooth, you can see a dark circle below the tooth. Dr. Aamodt gently pointed that out to me.

“That tells me there’s bacteria living inside of your jaw,” he explained. “A lot of people have this. It’s pretty common so don’t beat yourself up for it.”

This is when he told me I’d likely need to get a root canal to get rid of it. Mild panic ensued.

Dr. Aamodt went on to explain that, if I were a patient of his looking to get my teeth straightened, he would recommend that I first get the root canal before any teeth movement. That’s because, he explained, moving teeth at that point could potentially result in further infection.

“The concern about that is when we move a tooth with that, the infection will get worse and you could risk losing that tooth,” he told me.

Although I was freaking out internally, I continued to move ahead with the process. Next up was the 3D scan, which results in something fancy called a 3D Cone Beam Computed Tomography. This, Dr. Aamodt said, is what really sets Uniform Teeth apart in precision tooth movement.

This process takes the place of dental impressions, which are made by biting into a tray with gooey material. I didn’t feel like getting my bottom teeth scanned, but below is what the top looks like.

At this point Uniform Teeth would share its recommendations with the patient. My personal recommendation was to go see my dentist and, if I’m interested in straightening my teeth, come back once my roots are in a healthy enough state.

From there, I’d receive a custom treatment plan that combines the X-ray plus 3D scan to predict how my teeth will move. After receiving the clear aligners in a couple of weeks, I’d check in with Dr. Aamodt every week via the mobile app. If something were to come up, I could always set up an in-person appointment. Most people average about two to three visits in total, Jewitt said. All of that would add up to about $3,500.

The reason Uniform Teeth requires in-office visits is because 75 percent or more of the cases require additional procedures. For example, some people require small, tooth-colored attachments to be placed onto the clear aligners. Those attachments can help move teeth in a more advanced way, Dr. Aamodt said.

“If you don’t have these, then you can tip some teeth but you can’t do all of the things to help improve the bite, to create a really lasting, beautiful, healthy smile,” he explained.

Uniform Teeth currently treats patients in San Francisco, but intends to open additional offices nationwide next year. As the company expands, the plan is to bring on board more full-time orthodontists.

“Right now, we’re an employment-based model and we’d really like to continue that because it allows us to control the experience and deliver a really high-quality service,” Jewitt said.

A lot of companies say they care about the customer when, in reality, they just care about making money. But I genuinely believe Uniform Teeth does care. After I left with my tail between my legs that day, I called my dentist to set up an appointment. The following day, my dentist confirmed what Dr. Aamodt found and proceeded to set me up to get a root canal. A few days later, Dr. Aamodt checked in with me via the mobile app to ask me how I was doing and to make sure I was getting it treated. I was pleased to let him know, as Olivia Pope likes to say, “It’s handled.”

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