Upgrade Your Oral Health - HSA/FSA Eligible
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Only Buy The Feno Smartbrush from Official Channels — Watch Out for Imitation Sites

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chronic sinusitis bad breath | 5 min read

Can Chronic Sinus Issues Cause Bad Breath Even With Good Oral Hygiene?

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Baking Soda and Tongue Coating: Could Silent Reflux Be the Hidden Connection?

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Halitosis vs Halitophobia: Understanding the Difference Between Bad Breath and the Fear of Bad Breath

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alkaline water bad breath | 5 min read

Does Alkaline Water Help Bad Breath? What Science Actually Says

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U-shaped smart toothbrush on a charging base marked with a red FAKE ALERT stamp.
Profile silhouette with an MRI scan revealing sinus and nasal cavities behind bad breath.
White baking soda powder pouring into fizzing water, illustrating a pH-neutralizing reaction for reflux relief.
Anxious person covering mouth alone at a busy cafe, illustrating fear of bad breath.
Glowing water droplet holding a DNA helix, illustrating alkaline water and bad breath science.

Feno latest

Profile silhouette with an MRI scan revealing sinus and nasal cavities behind bad breath.

Can Chronic Sinus Issues Cause Bad Breath Even With Good Oral Hygiene?

5 min read

More in the news...

U-shaped smart toothbrush on charging base beside phone showing a completed morning routine reminder.

ADHD and Oral Health: What the Research Says (and How to Protect Your Teeth)

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Reminder notes to call the dentist surround a phone showing a missed call, illustrating ADHD oral health struggles.

ADHD and Oral Health: Why Executive Dysfunction Creates a Hidden Dental Tax

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Prescription bottle, glass of water, and U-shaped smart toothbrush on a sunlit nightstand.

ADHD Medication and Oral Health: What Stimulants Do to Your Teeth and Gums

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Bitten glazed donut and cereal bowl beside a clock reading 2:00 AM, a late-night snack.

Should You Brush Your Teeth After a Late-Night Snack? What the Research Says

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Expectant mother resting a hand on her belly, gazing out an arched window at golden hour.

Gum Disease and Pregnancy: What the Research Actually Says

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Gloved dentist holds a panoramic dental X-ray up to a lightbox in a dim clinic.

Why X-Rays Alone Can't Diagnose Periodontal Disease

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Glowing digital X-ray of a person's jaw and teeth shown in profile.

Does Jaw Surgery Cause Periodontal Disease? What Research Shows

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Couple standing close at a bathroom sink, reflected in a mirror under soft light.

Can Periodontal Disease Spread Between Partners? Here's What Research Shows

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Other news

Person in bed at night clutching chest, showing acid reflux discomfort that can cause bad breath.

Acid Reflux and Bad Breath: Why GERD-Related Halitosis Needs More Than Mouthwash

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Founders spotlight

Feno founder smiling while seated in a bright, modern office hallway.

We founded Feno to revolutionize dental care, understanding the vital connection between oral and overall health.

Seeing how closely our oral health ties to our overall well-health, I started Feno to use technology to make dental care smarter and keep you healthier.

Feno u shaped smart toothbrush with digital display showing the time, standing upright.

Let’s stay connected

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The Founder’s Edition Bundle:

Your Complete Oral Care Kit

Feno smart U-shaped toothbrush bundle with foam bottles, charger, and connected phone app.

1 Feno Smartbrush™

Includes the Smarthandle and Snap Charger

1 TrueFit Mouthpiece™

Sized for your comfort and dental arch

3 Tubes Feno Foam

Xylitol foaming toothpaste

1 Month Feno Plus

Oral Health Insights & Connected Dentist

Shop Now for $299