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

Many toothpastes contain fluoride as it has benefits for protecting tooth health. Too much fluoride can pose risks to health, but the amount of fluoride in toothpaste is generally safe if a person ...

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 ...