What Hydroxyapatite Particle Size Really Means for Remineralization
If you’ve been researching hydroxyapatite toothpastes, you’ve probably noticed something confusing:
Some brands confidently promote nano-hydroxyapatite as the most advanced option for remineralization while others like us choose to avoid it altogether.
You may have wondered:
- Is nano-hydroxyapatite actually more effective?
- Why do some companies use it and others don’t?
- Is particle size really a safety issue, or just marketing noise?
This video was created to address these exact questions.
Rather than hype or fear-based claims, we take a careful look at what the research says about hydroxyapatite particle size, why scientists study nanoparticles so closely, and what recent regulatory reviews, including the EU’s July 2025 SCCS opinion, actually tell us and perhaps more importantly, what they didn’t study.
Our intention isn’t to tell you what to choose.
It’s to empower you with knowledge and give you the scientific context you need to decide what feels right for you and your family.
What This Video Covers
In this video, we explore:
- Why hydroxyapatite works so well for remineralization in the first place
- The functional difference between nano and microcrystalline hydroxyapatite
- How particle size affects biological behavior in the mouth
- Why nanoparticles raise different safety questions than larger mineral particles
- What the EU’s SCCS July 2025 review on nano-hydroxyapatite does (and does not) conclude
- Why the type of oral tissue tested matters when evaluating safety (this is important!)
- How to apply this information thoughtfully to everyday oral care choices
Timestamps
- 00:00 – Why particle size became such a big topic
- 02:05 – Hydroxyapatite and how teeth naturally remineralize
- 04:10 – Nano vs microcrystalline: what’s the real difference?
- 06:35 – Why scientists study nanoparticles differently
- 08:10 – The SCCS July 2025 opinion: what changed and why
- 10:25 – Oral tissue types and why gumline permeability matters
- 13:15 – What we know, what we don’t, and why caution remains reasonable
- 15:40 – Microcrystalline hydroxyapatite as a practical alternative
- 17:05 – How to think clearly about safety and daily use
- 18:45 – Key takeaways and next steps
A Final Thought
Hydroxyapatite itself isn’t controversial.
The real discussion is about particle size and the larger context about safety of daily exposure.
We hope this video helps bring clarity to a conversation that’s often oversimplified and empowers you to choose oral care products with confidence, discernment, and alignment with your values.
Helpful, Related Resources
- How to Stop Tooth Decay and Remineralize Your Teeth [FREE eBook]
- OraWellness Toolkit – Optimize Your Oral Microbiome eBook [FREE eBook]
- Nano or No-No: Why Hydroxyapatite Particle Size Matters [Article]
- Why the Quantity of Hydroxyapatite Matters When Remineralizing Cavities [Article]
- The ‘Missing Factor’: To Remineralize Your Teeth with Hydroxyapatite Toothpaste, Quality Matters [Article]
