enamel /enam·el/ (ĕ-nam´'l)
enamel lamellae
mottled enamel
1. the glazed surface of baked porcelain, metal, or pottery.
2. any hard, smooth, glossy coating.
3. dental enamel; the hard, thin, translucent substance covering and protecting the dentin of a tooth crown and composed almost entirely of calcium salts.
mottled enamel dental fluorosis: hypoplasia of the dental enamel caused by drinking water with a high fluorine content during the time of tooth formation; characterized by defective calcification that gives a white chalky appearance to the enamel, which gradually undergoes brown discoloration.
mot·tled enamel (m t ld)n. Defective enamel formation, varying in appearance from small white opacities to yellow and black spotting, due to excessive fluoride ingestion during tooth formation. |
enamel lamellae
(l
mel´ē),
n.pl the incompletely calcified, microscopic structures present in the enamel. They may extend to the dentinoenamel junction and beyond.
mel´ē), n.pl the incompletely calcified, microscopic structures present in the enamel. They may extend to the dentinoenamel junction and beyond.
enamel matrix,
n the mineral structure of enamel, secreted by ameloblasts.
enamel, mottled,
enamel
the white, compact and very hard substance covering and protecting the dentine of the crown of a tooth.
enamel bulge
the area of greatest diameter of a tooth, just external to the gum line, which acts to deflect food from the free gingival margin and the gingival crevice.
enamel epithelium
epithelium which creates a bell-shaped enamel organ, surrounding the dental papilla; the internal epithelium consists of columnar ameloblasts which secrete enamel.
enamel hypoplasia
incomplete or partial development; a common defect in dogs.
inherited enamel defect
an inherited absence of enamel from all teeth combined with excessive flexibility of joints in Holstein-Friesian cattle. The teeth are pink and obviously deficient in substance. A defect in collagen formation is probable.
enamel layer
the outermost layer of cells of the enamel organ.
mottled enamel
dental fluorosis; defective enamel, with a chalky white appearance or brownish stain, caused by excessive amounts of fluorine in drinking water and food preparations during the period of enamel calcification.
enamel organ
an epithelial cap over a dental papilla that develops into the enamel-producing organ. The shape of the enamel organ determines the shape of the tooth.
enamel points
sharp projections of enamel at the junction of the buccal and occlusal surfaces of a tooth. Seen most commonly in horses.
enamel rods
progressively mineralized glycoproteinaceous tubules, the basic structural units of enamel; enamel is acellular and consists of interrod material and rods,
enamel spot
remnant of the enamel cup in the center of an incisor tooth table in a horse.
)
Enamel spot. By permission from Sack W, Wensing CJG, Dyce KM, Textbook of Veterinary Anatomy, Saunders, 2002
enamel works
factories manufacturing enamels or using them extensively; sources of fluorine for pollution of pasture and water.
mottled enamel
Dentistry Enamel punctuated by patches of white and/or brownish discoloration; ME may be due to infection and/or antibiotic therapy or fluorosis
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