"Hydroxyapatite is natural. It is a type of calcium that makes up bones and teeth," says Lai. "Nano-hydroxyapatite relates to the particle size. These are between 20 and 80 nanometers and are much ...

Toothpaste is part of most everyone’s daily routine and is a must-have for healthy teeth. For a product you spit out, there’s a lot to consider. The drugstore aisle is filled with an ever-growing ...

Add Yahoo as a preferred source to see more of our stories on Google. A close up of someone smiling. At-home teeth whitening kits or toothpastes are great for getting a whiter smile at home without ...