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]
References in periodicals archive ?
This solution is a special gel that "will establish a biomimetic crystalline-amorphous mineralization frontier to induce the growth of enamel with a precise maintenance of the original structural complexity within 48 hours."
After completing the bleaching procedure for all Groups, only one sample from each Group was taken and analysed enamel morphology by using a scanning electron microscope (EVO/MA10 ZEISS, Germany) with 2000 magnification and using an atomic force microscope (Dimension Edge Bruker, USA) with an area of 70 x 70 pm2, where the tip of the silicon probe (Tap300-G, sensor budget, Bulgaria) contacts the surface of the sample with tapping mode (Intermittent contact).
A significant reduction in the shear bond strength of composite resin to enamel after bleaching with 35% hydrogen peroxide has been reported in previous studies by Cavalli et al.12 and Nour El-din etal.13 Hence, the present study was undertaken to assess the effect of anti-oxidant treatment on shear bond strength of bleached teeth further.
In view of the questions raised, the purpose of the present study was designed with different parameters to evaluate and compare the SBS of Erbium laser etched enamel to acid etched.
The most important aspect in diagnosis of the enamel demineralization involves accurate and reliable description of such lesions, rather than detection; which mainly requires reading certain topographic characteristics of the enamel opacity.
Halcyon Days enamel products include boxes, musical boxes, cufflinks and bangles.
Therefore, preliminary phosphoric acid etching was recommended to improve the adhesion to enamel.19,20,21
Around 1470, the Limoges workshops developed a new industry: painted enamels. According to Antwerp-based dealer Bernard Descheemaeker, until 1545 these compositions, painted on copper plaques, were largely religious scenes used for private devotion, derived from Northern European engravings.
The enamel specimens were randomly divided into five groups (n = 10) based on the type of enamel surface pretreatment used, as follows:
The big advantage of the system is the primers penetration on the entire depth of the generated pores of the enamel, which provides predictable, extremely durable mechanical fixation [17].
KEY WORDS: Celiac Disease, Dental caries, Enamel defects, Recurrent aphthous stomatitis.