Medically reviewed by Edmund Khoo, DDS Trench mouth is a severe, advanced form of gingivitis (gum disease) that causes ...

such as hydrogen peroxide. These may be "generally safer" for your teeth than more abrasive ingredients, but Tavares said, "they can still cause gum irritation or sensitivity if overused or used ...

Hydrogen peroxide (H2O2) is a common bleaching agent that you can buy at the drugstore ... on healthy cells because there is ...

Some home teeth-whitening kits sold online contain dangerous levels of bleaching chemical that can burn gums and ... than 10% hydrogen peroxide. Which? says consumers should seek help from a ...