enamelum

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): enamelum [TA], substantia adamantina, substantia vitrea

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

The hard, acellular, inert substance covering the tooth. In its mature form, it is composed of an inorganic portion made up of 90% hydroxyapatite and 6-8% calcium carbonate, calcium fluoride, and magnesium carbonate, the remainder consisting of an organic matrix of protein and glycoprotein; structurally, it is made up of oriented rods each of which consists of a stack of rodlets encased in an organic prism sheath.

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

Hard, glistening substance covering coronal dentin of tooth. In its mature form, composed of an inorganic portion made up of 90% hydroxyapatite and about 6% calcium carbonate, calcium fluoride, and magnesium carbonate, with the remainder (4%) being an organic matrix of protein and glycoprotein.
Synonym(s): enamelum [TA] .

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