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Pronunciation: e-nam'el

Definition: The hard, glistening substance covering the coronal dentin of the tooth. In its mature form, it is composed of an inorganic portion made up of 90% hydroxyapatite and between 6% calcium carbonate, calcium fluoride, and magnesium carbonate, the remainder (4%) being an organic matrix of protein and glycoprotein.

Synonym(s): enamelumTA, substantia adamantina, substantia vitrea

[M.E., fr. Fr. enamailer, to apply enamel, fr. en, on, + amail, enamel, fr. Germanic]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.