Nano-Hydroxyapatite for Dogs

The science of remineralization, finally made for dogs.

Nano-hydroxyapatite (nHA) is the same enamel-rebuilding mineral trusted by human dentistry for 40+ years. Now bioavailable, dog-safe, and in every Arterra dental product.

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22,500+ Happy customers

40+ yrs Human dentistry heritage

20-80nm Optimal particle size

Particle size 20-80nm — small enough to fill enamel micro-lesions.

Safety Fluoride-free. Safe if swallowed. Vet-formulated.

What is Nano-Hydroxyapatite?

The same mineral your dog's enamel is made of — 60-80nm particles that fill micro-lesions and rebuild tooth surface from the outside in.

Hydroxyapatite is the primary mineral in tooth enamel. In its nano form (20-80 nanometers), it's small enough to enter the microscopic craters that daily wear and acid create on the tooth surface. Once there, it bonds to the enamel and hardens — literally rebuilding the tooth.

Human dentistry has used it since 1970s NASA astronaut research first proved the mechanism. What's new for dogs is a bioavailable form that's stable in a chew, palatable in a paste, and — critically — safe if swallowed.

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nHA vs. Traditional Dog Dental Care

Most dog dental products are abrasive — they scrape plaque off the surface. Nano-hydroxyapatite is regenerative — it fills the damage underneath. Here's what that difference looks like head-to-head.

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How nano-hydroxyapatite rebuilds enamel

Step 1

1. Micro-damage. Daily chewing, acid from food, and bacterial biofilm create tiny craters in the enamel surface — too small to see, big enough for plaque to anchor into.

Step 2

2. Delivery. nHA particles at 20-80nm are small enough to enter those craters. Suspended in Arterra's toothpaste or bound into the chew, they reach the damaged sites directly.

Step 3

3. Remineralization. The nHA bonds to the surrounding enamel and hardens into a fresh mineral layer. The surface becomes smoother, denser, and more resistant to the next round of damage.

Step 1

1. Micro-damage. Daily chewing, acid from food, and bacterial biofilm create tiny craters in the enamel surface — too small to see, big enough for plaque to anchor into.

Step 2

2. Delivery. nHA particles at 20-80nm are small enough to enter those craters. Suspended in Arterra's toothpaste or bound into the chew, they reach the damaged sites directly.

Step 3

3. Remineralization. The nHA bonds to the surrounding enamel and hardens into a fresh mineral layer. The surface becomes smoother, denser, and more resistant to the next round of damage.

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Common questions

Is nano-hydroxyapatite safe for dogs?

Yes. Hydroxyapatite is the mineral your dog's enamel is already made of, and the nano form is safe if swallowed — which is critical for dogs, since they always swallow the paste. Fluoride is toxic to dogs at higher doses; nHA is not. It's been used safely in human dentistry for 40+ years, including in toothpastes designed to be swallowed by children.

How is this different from brushing my dog's teeth with a regular toothpaste?

Standard toothpastes clean the surface — they remove plaque via detergents and mild abrasives. nHA does that, and also actively fills the microscopic craters where new plaque anchors. Think of it as the difference between wiping a countertop and resealing it. Both matter, but only one prevents the next problem.

Does my dog need it if their teeth look fine?

By the time you can see plaque, tartar, or early gingivitis on a dog's teeth, the damage underneath is already established. Periodontal disease affects roughly 80% of dogs over the age of three. nHA is preventative — it works best used routinely on healthy teeth, not just when problems appear.

Can I use nHA alongside my dog's other dental products?

Yes, and we recommend it. nHA pairs well with mechanical cleaning (brushing, dental chews, water additives). It's not a replacement for a vet cleaning if your dog already has advanced tartar — but it's what you use afterwards to keep the enamel strong.

Nano-hydroxyapatite vs. micro-hydroxyapatite — does size matter?

Yes, significantly. Only nano-sized particles (20-80nm) are small enough to enter the microscopic craters where enamel damage lives. Micro-hydroxyapatite sits on the surface, providing polishing but no meaningful remineralization. We break this down in detail in our article Nano vs Micro Hydroxyapatite: Does Particle Size Actually Matter?

What if my dog has periodontal disease already?

Talk to your vet first. Advanced periodontal disease usually needs a professional cleaning under anesthesia. Once that's done, Arterra's dental range is what you use to keep the results — nHA reinforces the enamel your vet just cleaned, and the prebiotics in the formula support the gum microbiome. See our full guide to dog periodontal disease stages.