Hydroxyapatite: fluoride-free enamel care
The toothpaste has a trial. The serum does not.
Dentite Tooth Armor is a nano-hydroxyapatite serum: a few drops at night, sold as the step toothpaste is missing. Short answer: hydroxyapatite itself has a decent trial — as a toothpaste, brushed twice a day, it prevented new decay about as well as fluoride toothpaste over 18 months. We found no study of a hydroxyapatite serum like Dentite.
How the evidence flows
Each claim (middle), the studies that tested it (left) — green found it, red found nothing — and the grade they add up to (right). Drawn from the same records as the grades below. Tap to open full size.
Hydroxyapatite tooth care (Dentite) · evidence checked 2026-10-26
What the research shows
Grades are calculated from the studies listed, by fixed rules.
- A hydroxyapatite toothpaste prevents cavities as well as a fluoride toothpasteEarly evidence
One 18-month double-blind trial of 189 adults found a fluoride-free hydroxyapatite toothpaste no worse than fluoride toothpaste at preventing new decay. Three authors work for its maker, and there was no placebo group.
- Dentite Tooth Armor, a few drops of enamel serum at night, strengthens teeth and cuts sensitivityNo real evidence
The ad said “Toothpaste cleans your teeth. It was never built to strengthen them. / Dentite Tooth Armor is the step your routine is missing — a clean enamel serum that supports the surface where sensitivity and…”
Medicinal Foods (Dentite) · Facebook ad, seen Oct 2026
The ad said “3 seconds. 3 steps. That’s the whole routine. / Shake → swish → brush with your normal toothpaste. Dentite Tooth Armor slips right into your day and gets to work with: / Nano-hydroxyapatite…”
Medicinal Foods (Dentite) · Facebook ad, seen Oct 2026
We found no study of Dentite. The trial above tested a toothpaste brushed twice a day, not a serum applied at night; a different product and a different routine.