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[Fr. émail, esmail, enamel]
The hard, white, dense, inorganic substance covering the crown of the teeth. Enamel is composed of hydroxyapatite crystal, a salt that contains calcium. The crystals are arranged to form a rod. The enamel rods are organized to form the enamel. Enamel is the hardest substance in the body. Demineralization may result in a carious lesion (cavity).