"Hydroxyapatite is natural. It is a type of calcium that makes up bones and teeth," says Lai. "Nano-hydroxyapatite relates to ...

For decades, fluoride has been at the heart of modern dental care, recommended by dentists and added to everything from toothpaste to drinking water. But in recent years, a growing wave of ...

Add Yahoo as a preferred source to see more of our stories on Google. If you're thinking about trying a nano-hydroxyapatite toothpaste but aren't sure if it's right for you, we spoke to dentists to ...