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

Our best whitening toothpastes will help you get a brighter, whiter smile, tested by the GHI. Shop our edit now.

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 ...

We all know that brushing our teeth is important. However, it's easy to make mistakes during one's dental hygiene routine. In fact, people often believe they are doing much better job at cleaning ...