STORY: Researchers in London have developed a dental treatment using keratin, a protein found in hair, skin, and wool, that they say can repair damaged tooth enamel. ''Currently enamel, once it's gone ...

Fluoride, a naturally occuring mineral found in many foods and water, has been a primary ingredient in toothpaste since the 1970s. Despite being widely regarded as safe by the Food and Drug ...

Select independently determines what we cover and recommend. When you buy through our links, we may earn a commission. Learn more. We don’t always have the answers, but we have some people on speed ...