Healing the Mouth Microbiome: Bad Breath, Cavities, Fluoride & What’s Living On Your Teeth | Katherine Dahl, SuperTeeth

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Your mouth is more than a gateway to your body - it’s one of the most important microbiomes you have.

In this episode of The Art of Being Well, I talk with Katherine Dahl, founder of SuperTeeth, about the powerful connection between oral and gut health.

After surviving a life-threatening C. diff infection from antibiotics, Katherine became deeply passionate about the role of beneficial bacteria in healing the body. Later, after developing a bacterial imbalance in her mouth, she and her family created SuperTeeth - the first probiotic oral care company designed to restore harmony to the mouth’s microbiome.

We discuss how traditional toothpaste and mouthwash can disrupt bacterial balance, how fluoride compares to hydroxyapatite for enamel repair, and why oral probiotics could be the missing link in preventing cavities, inflammation, and gum disease.

If you’ve ever wondered how your toothpaste might be impacting your gut, this episode will change the way you think about oral health.

A few of my favorite things we cover in this episode: 

•  Katherine’s story: overcoming C. diff and discovering the microbiome’s power
• How antibiotics disrupt both gut and oral bacteria
• Why your mouth is the “first line” of your microbiome health
• The surprising link between oral dysbiosis, inflammation, and gut issues
• What’s really in most toothpastes: foaming agents, fluoride, and SLS
• How fluoride and mouthwash disrupt beneficial bacteria
• Hydroxyapatite vs. fluoride - how they differ in repairing enamel
• The science behind oral probiotics (Streptococcus salivarius M18)
• How SuperTeeth helps balance bacteria and fight cavities naturally
• The hidden dangers of PFAS-coated floss and alcohol-based mouthwash
• Why kids’ dental health can’t be separated from their gut health
• How to rebuild your oral microbiome: food, hygiene, and daily rituals

Products Mentioned:

• SuperTeeth Hydroxyapatite Toothpaste
• SuperTeeth Dental Probiotics
• SuperTeeth Hydroxyapatite Floss
• Dr. Will Cole’s Gut Feelings 
• Holy Mane + Holy Radiance (for collagen and gum support)

Episode Sponsors:

• Use code DrWillCole at checkout for 15% off your first purchase at www.GetSuperTeeth.com

Happy listening and we hope you learned a little bit more on the art of being well!

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In Health,

Dr. Will Cole