Take the guesswork out of your oral health

Get insight into the root cause of bad breath, tooth decay, gum inflammation, and other conditions with an at-home oral microbiome test. Receive personalized product, hygiene, and diet recommendations to start improving your health.


How it works

Order your test

We’ll send you a kit, collect a saliva sample at home, and mail it back to our lab.

View results

Get your oral health report card with a breakdown of the bacteria and fungi in your mouth.

Start improving

Receive personalized diet, lifestyle, hygiene, and oral care product recommendations.

Meet your coach

Our oral health experts will talk you through your results and care plan.

Monitor over time

Track how changes you make improve your health through recurrent testing.
"I believe the oral microbiome is the new frontier of health! With Bristle, you can easily learn about your unique oral microbiome, receive personalized recommendations, track your changes over time, and take charge of not only your dental health, but your overall wellness. Whether you’re a biohacker or health enthusiast, you need to get Bristle now!!"
Melanie Avalon

Biohacking Expert

Good health starts with a healthy mouth.

The Bristle test can help identify the root cause of symptoms, including:

Chronic bad breath
Gut inflammation
Tongue coating
Burning mouth
Inflamed gums
Weird taste
Tooth decay
Your oral health is driven by your oral microbiome

The mouth is home to the second largest microbiome in your body with trillions of microbes, some beneficial and others harmful.

Each individual has between 100 - 200 bacterial species in their mouth on average, and factors like nutrition & hygiene determine which species you have.

Most oral diseases and conditions are caused by an overabundance of harmful microbes.

Your oral microbiome impacts your overall health
Oral bacteria are associated with a range of systemic and chronic conditions including:


pregnancy outcomes





Optimizing your oral health is critical to gut, brain, heart, and whole-body health & wellness.

Test your oral microbiome

Measure the 100+ beneficial and harmful oral bacteria and fungi in your mouth.

Get your oral health report card

With scores for tooth decay, gum inflammation, halitosis (bad breath), gut inflammation, and beneficial bacteria.

See a sample report

Identify what’s driving your health status and symptoms

Get a breakdown of every bacterial species detected in your saliva, including a description of how it influences your health.

Optimize your routine

Receive a personalized diet, hygiene, and oral care product plan plus 1:1 coaching with a Bristle health expert.

Track your progress

With subscription testing, quantifiably monitor how changes you make impact your oral health scores and microbiome.

The Bristle Oral Health Test

We believe good health starts with a healthy mouth. The Bristle Oral Health Test shows you the levels of good and bad bacteria in your saliva, with personalized insights to optimize and maintain your oral health.

from $99
Recommended by leading dentists
Dr. Roshan Parikh, DDS
President at dntl bar

Former Head of Dentistry, Walmart, Chief Strategy Officer, DSO Strategy, LLC

Dr. Bonnie Feldman, DDS
General Dentist and Founder of Autoimmune Connect

International speaker, consultant, and writer with a focus on the oral microbiome's connection to systemic disease

Dr. Jonathan Levine, DDS
Founder of GLO Science, Oral Health Expert, Social Entrepreneur

Former Associate Professor at NYU School of Dentistry and co-founder of the GLO GOOD Foundation

Dr. Mark Burhenne, DDS
Family Dentist and Founder of AskTheDentist.com

Former Chief Dental Officer at Quip and best selling author

Dr. Eric Pulver, DDS
Oral & Maxillofacial Surgeon and Chief Dental Officer at Denti.Ai

Former Director of Oral & Maxillofacial Surgery at the University of Chicago Hospitals and team surgeon for the Chicago Blackhawks