enamel hypoplasia


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e·nam·el hy·po·pla·si·a

a developmental disturbance of teeth characterized by deficient or defective enamel matrix formation; may be hereditary, as in amelogenesis imperfecta, or acquired, as encountered in dental fluorosis, local infection, childhood fevers, and congenital syphilis.

enamel hypoplasia

a defect in which the enamel of the teeth is hard but thin and deficient in amount as a result of defective enamel matrix formation with a shortage of the cementing substance. It is characterized by lack of contact between teeth, rapid breakdown of occlusal surfaces, and a yellowish-brown stain that appears where the dentin is exposed. The condition affects both primary and secondary dentition. It is transmitted genetically or caused by environmental factors such as vitamin A, C, or D deficiency; fluorosis; rash-producing childhood diseases; congenital syphilis; injury or trauma to the mouth; or administration of tetracyclines during the second half of pregnancy or during early tooth development. Compare enamel hypocalcification. See also amelogenesis imperfecta.
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Enamel hypoplasia

e·nam·el hy·po·pla·si·a

(ĕ-nam'ĕl hī'pō-plā'zē-ă)
A disturbance in the developing ameloblasts during enamel matrix formation resulting in a pitted surface of the crown.
See also: enamel hypocalcification, fluorosis

e·nam·el hy·po·pla·si·a

(ĕ-nam'ĕl hī'pō-plā'zē-ă)
Developmental disturbance of teeth characterized by deficient or defective enamel matrix formation.

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.
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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.
References in periodicals archive ?
Dental enamel hypoplasia in late Pleistocene Equus from Texas and New Mexico.
Cornay RJ and AJ Mead: Analysis of enamel hypoplasia in opossums (Didelphis virginiana), Baldwin County, Georgia.
Hillson SW and Bond S: Relationship of enamel hypoplasia to the pattern of tooth crown growth: a discussion.
Goodman All and Rose JC: Dental enamel hypoplasia as indicators of nutritional status.
Areas of enamel demineralisation were present in 34% of subjects, enamel hypoplasia in 3%, and MIH in 5%.
Enamel hypoplasia and dental caries in Australian aboriginal children: prevalence and correlation between the two diseases.
Furthermore the prevalence of enamel hypoplasia was higher in children with CLP than those without, but the difference was not statistically significant.
Malnutrition has been associated with aetiology of enamel hypoplasia (structural and opacities) in a cross-sectional study in 2-6 year old Saudi males [Rugg-Gunn, 1998].
A dental orthopantomogram (Fig 2) revealed noticeable enamel hypoplasia affecting the developing second permanent molars and the developing premolars.
Ridges on the teeth, known as enamel hypoplasia, showed the dead men suffered from malnutrition or similar medical trauma during childhood, said Dr Pam Graves, a senior lecturer in archaeology at Durham University.
Assessment of systemic physiological perturbations from dental enamel hypoplasias and associated structures.