Picture this: You’re at the end of your day (and the end of your wits) with your toddler, and you’re brushing her teeth, wondering — again — what’s actually in this bubblegum-flavored toothpaste she loves so much. Fluoride? Nano-something? Unicorn dust?
Or your elementary-aged kids shows you his tooth that just fell out, and it’s actually very yellow. And you wonder, “but I swear I make him brush his teeth!”
As a holistic dentist, mom of four, grandmother of two, and someone who once found herself eating organic gummy bears in a health crisis (true story), I get it. You want safe, natural products for your family — especially your children. That’s why I’m shouting from the rooftops about a quiet hero in dental care: Hydroxyapatite.
Let’s break it down in mom-speak: what it is, why it works, and what you really need to know about its safety (spoiler: it doesn’t mess with your brain, unlike fluoride). This is the science-backed, mom-approved dental solution that’s taking over bathroom counters for a reason.
What is hydroxyapatite, and why should I care?
Hydroxyapatite is a natural mineral that already exists in your teeth and bones. In fact, it makes up 97 percent of your tooth enamel and 70 percent of your dentin. So when we brush with it, we’re not adding something weird or synthetic — we’re simply restoring what’s already there.
Think of it as patching up potholes in your driveway with actual concrete, not glitter glue.
Unlike fluoride, which works by creating a barrier on top of the tooth, hydroxyapatite fills in tiny holes and imperfections, rebuilding and remineralizing teeth from the inside out. It quite literally helps build cavity-proof teeth in your kiddos.
We all know dental visits aren’t on the top of the “fun” list for moms and kids, but if your kids are healthy and cavity free, everyone is happy!
And here’s the best part: Unlike fluoride toothpaste with ominous safety warnings on the tube, it’s safe enough to swallow.
Is it safe? What about the blood-brain barrier and nano particles?
Here’s where things get technical — but don’t worry, I’ll try to keep it simple.
You may have heard concerns about “nano” hydroxyapatite and whether it can cross the blood-brain barrier. Nano means tiny — so tiny it’s measured in nanometers (one billionth of a meter). The idea is that something that small might slip past your body’s natural filters and lodge itself in your brain.
Here’s what the research says:
Hydroxyapatite, even in nano form, does not cross the blood-brain barrier. It’s insoluble in blood, non-reactive, and our digestive system breaks it down into simple minerals before it can affect the brain or other organs. The benefit of hydroxyapatite in an oral care product is that if it isn’t spit out, it’s swallowed, and it dissolves in stomach acid.
Yes, dissolves.
Which means your toddler could eat the whole bottle or tube (please don’t let them), without worry.
And what about size? The particles need to be small enough to fit between the crystals in the enamel and into the tubes in the dentin to do their job. Anything from 20 nm to 200 nm (considered “micro” by definition) will fit and strengthen the tooth. It’s like Goldilocks’ toothpaste — not too big, not too small, but just right.
How it compares to fluoride (and why that matters for kids)
You’ve probably been told fluoride is essential for cavity prevention. It’s true, fluoride does make teeth stronger, but the rest of the story is murky. Fluoride doesn’t just stay put when used in a toothpaste or rinse.
A 2025 article published by the New York Times reported children exposed to high levels of fluoride had lower IQ scores. The U.S. National Toxicology Program has also confirmed fluoride’s neurotoxic effects, particularly in young children.
So what’s a mom to do?
Hydroxyapatite has been shown to be just as effective as fluoride for remineralizing teeth — without the toxicity concerns. In fact, it’s the gold standard in Japan and Europe. (Once again, America is fashionably late to the party.)
Want to dive deeper into the fluoride conversation regarding health? Check out this study about fluoride’s effect on thyroid health.
How to switch — and what to look for
Making the switch to hydroxyapatite toothpaste is easy. Here’s what to look for:
- The word “hydroxyapatite” on the label
- NO fluoride (some brands include both — double-check!)
- No artificial dyes, sweeteners, or foaming agents like SLS (Sodium Lauryl Sulfate)
- Kid-friendly flavors that don’t scream “fake bubblegum”
Bonus points if the toothpowder or toothpaste comes in an environmentally safe bottle or tube. Because if we’re keeping our kids safe, we might as well keep their planet safe too.
Simple Actionable Takeaways (Mom-to-Mom Wisdom):
- Switch to hydroxyapatite toothpaste. It’s safe, effective, and mom-approved.
- Use it for your kids. Even if they swallow a little, it’s okay. Their teeth will thank you.
- Check for particle size. Ideal is 20-200 nanometers for enamel repair.
- Let go of the nano panic. It won’t cross the blood-brain barrier and harm your family’s health.
- Read the labels. If you can’t pronounce it (and it’s not hydroxyapatite), reconsider.
I’m here to help you and your family Live Well, naturally.
— Dr. Michelle Jorgensen is an author, speaker, teacher, biologic/holistic dentist, and health and wellness, provider. She is author of Living Well with Dr. Michelle: A Comprehensive Handbook for Optimal Health and Unlimited Energy. After practicing traditional dentistry for 10 years, Michelle became very sick. Through her own path to return to health, she discovered she had mercury poisoning from drilling out mercury fillings for her patients.
This path lead her to discover ways to improve her family’s and her own health in all facets of life. She found answers in the kitchen, in the garden, and at home. She has found what it takes to Live Well, in today’s world, and now with Living Well with Dr. Michelle, she wants to share those ways to Live Well with you.
