Hydroxyapatite toothpaste is becoming popular as a safe and effective alternative to fluoride toothpaste, but not all hydroxyapatite is created equal. One key difference lies in the size of the crystal particles used – micro or nano.
At Dimples, we use micro hydroxyapatite in our toothpaste. These crystals are slightly larger than their nano counterparts, and that difference matters.
Nano hydroxyapatite has raised some concerns due to its extremely small particle size. Because the crystals are so tiny, there is a possibility they could pass through soft tissue and enter the body. While research is still ongoing, this has led to increased scrutiny and caution around the use of nano hydroxyapatite, particularly when it comes to long-term safety.
On the other hand, micro hydroxyapatite offers excellent remineralization benefits without the same concerns. Its crystal structure is more similar to our natural hydroxyapatite found in tooth enamel, making it more biocompatible. In other words, micro hydroxyapatite works with your body to repair and protect teeth—replacing minerals where they’re meant to be.
We take quality seriously. The hydroxyapatite we use is of the highest purity, sourced naturally from France, ensuring consistent quality and effectiveness. It is also tested to make sure it is not contaminated by lead, arsenic or cadmium. By choosing a larger, purer crystal, we’re offering a product that not only helps restore your enamel but does so safely and effectively.
Taking care of your smile shouldn’t mean settling – and with Dimples, you don’t have to!
| Feature | Micro Hydroxyapatite | Nano Hydroxyapatite |
| Particle size | Larger crystal size (above 100 nanometers) | Extremely small crystals (under 100 nanometers) |
| Safety | Considered safer – unlikely to penetrate tissues | Under scrutiny for potential tissue penetration |
| Biocompatibility | Closely resembles natural tooth enamel | Also bioactive, but less structurally similar |
| Remineralisation efficacy | Highly effective at remineralizing enamel | Very effective due to deep penetration into enamel |
| Use in Dimples Toothpaste | Yes – chosen for purity, safety, and performance | No – concerns around particle size and safety |