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Toothpaste Rankings
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Hydroxyapatite

Also known as: nHAp, nano-hydroxyapatite, micro-hydroxyapatite, HAp

A biomimetic enamel mineral used in fluoride-free pastes to support remineralization and sensitivity relief.

01. What it is

What it is

Calcium phosphate mineral that makes up the majority of tooth enamel and a large share of dentin. Toothpastes use micro and/or nano particle sizes.

02. Why it’s used

Why it’s used

To deposit mineral into microscopic enamel defects, reduce sensitivity, and support a fluoride-free remineralization story.

03. The concern

The concern

Dose and particle quality vary by brand. Some shoppers also ask about nanoparticle safety; EU SCCS opinions have addressed certain nHAp forms for oral use.

04. Our take

Our take

Hydroxyapatite is one of the most credible fluoride alternatives when the brand is transparent about form and dose. We prefer stated percentages over vague 'mineral complex' language. Research citations belong to published papers, not to this site's own testing.

05. Found in

Brands we reviewed

These ranked pastes list or rely on this ingredient in the formula we evaluated.

06. Sources

Further reading

Third-party citations, not studies we ran.