enamel

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enamel

 [e-nam´el]
the white, compact, and very hard substance covering and protecting the dentin of the crown of a tooth.
mottled enamel a chronic endemic form of hypoplasia of the dental enamel caused by drinking water with a high fluoride content when a child is in the time of tooth formation. It is characterized by defective calcification that gives a white chalky appearance to the enamel, which gradually undergoes brown discoloration. See also dental fluorosis.

e·nam·el

(ē-nam'ĕl), [TA]
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.
[M.E., fr. Fr. enamailer, to apply enamel, fr. en, on, + amail, enamel, fr. Germanic]

enamel

(ĭ-năm′əl)
n.
Anatomy The hard, calcareous substance covering the exposed portion of a tooth.

e·nam′el·er, e·nam′el·ist n.

e·nam·el

(ĕ-nam'ĕl) [TA]
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]

enamel

The hard outer covering of the crown of a tooth.

enamel

a substance consisting mainly of a calcium phosphate-carbonate salt, bound together by KERATIN, found on the crowns of teeth and the denticles of fish. It is formed from the EPITHELIUM of the mouth. See TOOTH.

Enamel

The hard, white, outer layer of the tooth.

e·nam·el

(ĕ-nam'ĕl) [TA]
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]
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