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The Feno “smart electric toothbrush” claims to revolutionize the traditional two-minute toothbrushing routine by reducing it to 30 or even 20 seconds. However, this convenience comes at a cost, requiring users to insert an entire mouthpiece into their mouth twice a day. As I discovered during my review, even if technology works, it doesn’t necessarily mean it’s better than what we already have.
The Feno Smartbrush has been sitting on my bathroom counter for over three weeks, and while it has technically saved me time, I still prefer my non-motorized, dentist-recommended toothbrush. After consulting with the company and non-affiliated dentists, I’m left wondering why the Feno exists at all, especially considering its hefty price tag of $300 for the “Founder’s Edition” bundle, which is set to increase to $400 due to tariffs. The package includes three canisters of brand-specific Feno Foam toothpaste, which will need to be replaced at a cost of $30 for an extra three canisters, and the mouthpiece needs to be replaced every three months for an additional $30.
Feno Smartbrush
While it may brush all your teeth quickly, its unknown effectiveness makes it hard to recommend.
Pros
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Designed to brush at the correct angle with a dentist-recommended motion -
App is relatively easy to use
Cons
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Uncomfortable to use compared to a regular toothbrush -
Requires an app to operate -
Uses proprietary foam-based toothpaste -
Expensive, with a price 30 times that of a regular toothbrush and toothpaste
My dentist gave me my last manual toothbrush for free, and a tube of toothpaste cost only $5. Despite the high price, the company behind the Feno Smartbrush makes a compelling pitch: many people don’t brush their teeth for the recommended amount of time. I used to be one of them until I had to get multiple caps on my molars, which motivated me to take better care of my teeth. The Feno is designed to help by shortening brushing time and counting down with an on-screen timer.
However, my dentist was skeptical about the device’s claims, particularly regarding its brushing technique. The American Dental Association has a Seal of Acceptance for products recommended by dentists, but neither the Feno brush nor its special toothpaste have this seal. I’m left to rely on Feno’s claims that it can clean my teeth and remove plaque effectively. The device uses pressure sensors and 18,000 bristles to hit 250 strokes per tooth in 20 seconds, but there’s no published science to support its effectiveness.
