No matter the cause, cavities are not uncommon. The U.S. National Institute of Dental and Craniofacial Research reports that nearly 90% of adults have had cavities in their teeth. In fact, "tooth ...

Millions of people are affected by chronic dry mouth, or xerostomia, an agonizing side effect of damaged salivary glands. Currently, there is no cure for it. Researchers have established the world's ...

Sharks, skates and catfish also have tooth-like structures called denticles that make their skin feel like sandpaper. When Haridy studied the tissues of her catfish, she saw that the denticles were ...

New research shows that dentine, the inner layer of teeth that transmits sensory information to nerves inside the pulp, first evolved as sensory tissue in the armored exoskeletons of ancient fish.