What does enamel cover ? A)Crown of the tooth B)Dentin on all sides C)Cementum D)Cementum and partly dentin
Option A) The basic unit of enamel is called an enamel rod which is a tightly packed mass of hydroxyapatite crystals in an organized pattern. In cross section, it is best compared to a keyhole, with the top, or head, oriented toward the crown of the tooth, and the bottom, or tail, oriented toward the root of the tooth.
