Craze lines are small vertical cracks in the enamel of your teeth. They aren’t painful, but they can be unsightly.‌ Craze lines aren’t usually a health problem. But what causes them might be. Dentin.

The tooth root sits below the gumline and helps anchor the tooth in the jawbone. An exposed root, which may poke through the gum, can indicate damage to the gums or teeth. When a tooth root is no ...