Metal dental fillings leak mercury if they are exposed to a new powerful type of medical scan, scientists have found. They studied the effect of ultra-high-strength MRI - the latest in scanning ...

Charcoal-based toothpastes, which claim to whiten teeth, are a "marketing gimmick ... "When used too often in people with fillings, it can get into them and become difficult to get out," Dr ...

They explain how cavities can be reversed, if acidic foods will whiten teeth, and how long fillings last. They also talk about what you should do with a knocked-out tooth — as well as how long ...