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

Roshini Raj, MD, is Health's former magazine's medical editor and coauthor of What the Yuck?!. Board-certified in gastroenterology and internal medicine, Dr. Raj is a Clinical Associate Professor of ...

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 ...

Does whitening toothpaste actually whiten teeth? Whitening toothpaste can appear to whiten teeth slightly by removing surface stains, such as those caused by drinking coffee or smoking. However, ...

Even if you follow every step of your oral health routine to a T, you still might not have the bright, radiant smile you truly want. For gentle and gradual whitening with minimal extra effort, a ...