WordNet

coat, inlay, or surface with enamel
a colored glassy compound (opaque or partially opaque) that is fused to the surface of metal or glass or pottery for decoration or protection
a paint that dries to a hard glossy finish
any smooth glossy coating that resembles ceramic glaze
hard white substance covering the crown of a tooth (同)tooth enamel
underdevelopment of an organ because of a decrease in the number of cells

PrepTutorEJDIC

〈U〉〈C〉エナメル,ほうろう / 〈C〉ほうろう細工,ほうろう鉄器 / 〈U〉〈C〉エナメル,光沢塗料 / 〈U〉(歯の)ほうろう質 / …‘に'エナメルをかける,ほうろう引きする;〈皮・布など〉‘に'つや出しする

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/08 09:25:35」(JST)

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Enamel hypoplasia is a defect of the teeth in which the enamel is hard but thin and deficient in amount,^[1] caused by defective enamel matrix formation with a deficiency in the cementing substance^{[citation needed]}. Usually the condition involves part of the tooth having a pit in it. In some cases, the natural enamel crown has a hole in it, and in extreme cases, the tooth has no enamel, which doesn't mean the tooth doesn't exist because dentin is also a component of teeth.

Causes

It can be caused by any of the following:

Trauma
Bacterial infection
Slow enamel formation^[2]
Celiac disease^[3]

References

^ Ash, Major M., Jr. and Nelson, S.J (2003). Dental anatomy, physiology, and occlusion (8th ed.). Philadelphia: W.B. Saunders. ISBN 0-7216-9382-2.
^ What is Enamel Hypoplasia?
^ Celiac Disease, Oral Dis. 2013 Oct;19(7):635-41. doi: 10.1111/odi.12091.

Template:What is Enamel Hypoplasia?

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1. 歯の発達障害 developmental defects of the teeth
2. Uncommon congenital adrenal hyperplasias
3. 小児におけるセリアック病の疫学、病因、および臨床症状 epidemiology pathogenesis and clinical manifestations of celiac disease in children
4. 小児における歯の損傷の評価およびマネージメント evaluation and management of dental injuries in children
5. 小児におけるセリアック病の診断 diagnosis of celiac disease in children

English Journal

Dental stigmata and enamel thickness in a probable case of congenital syphilis from XVI century Croatia.

Lauc T1, Fornai C2, Premužić Z3, Vodanović M4, Weber GW2, Mašić B5, Rajić Šikanjić P6.
Archives of oral biology.Arch Oral Biol.2015 Oct;60(10):1554-64. doi: 10.1016/j.archoralbio.2015.07.002. Epub 2015 Jul 13.
OBJECTIVE: To analyse the dental remains of an individual with signs of congenital syphilis by using macroscopic observation, CBCT and micro-CT images, and the analysis of the enamel thickness.DESIGN: Anthropological analysis of human skeletal remains from the 16th century archaeological site Park G
PMID 26263543

The effect of hypoxia on the formation of mouse incisor enamel.

Sidaly R1, Risnes S2, Khan QE2, Stiris T3, Sehic A2.
Archives of oral biology.Arch Oral Biol.2015 Sep 5;60(11):1601-1612. doi: 10.1016/j.archoralbio.2015.08.009. [Epub ahead of print]
OBJECTIVE: The permanently growing mouse incisors exhibit all stages of tooth development along their inciso-apical axis at any time. Any disturbance or injury of the ameloblasts during enamel formation or maturation may result in permanent defects in the finished enamel since the enamel does not un
PMID 26351741

Japanese Journal

Sex differences in linear enamel hypoplasia (LEH) in early modern Japan

OYAMADA Joichi,KITAGAWA Yoshikazu,KATO Katsutomo [他],MATSUSHITA Takayuki,TSURUMOTO Toshiyuki,MANABE Yoshitaka
Anthropological science : journal of the Anthropological Society of Nippon 120(2), 97-101, 2012-08-01
… We compared the prevalence of linear enamel hypoplasia (LEH) in the dentition of the skeletal remains of early modern Japanese samurai and commoners interred in an urban location (a castle town). …
NAID 10031057107