関: CEJ、cemento-enamel junction、tooth cervix

WordNet

the state of being joined together (同)conjunction, conjugation, colligation
an act of joining or adjoining things (同)adjunction
something that joins or connects (同)conjunction
the place where two or more things come together

PrepTutorEJDIC

〈U〉〈C〉連結すること(された状態),『結合』,連合,合体 / 〈C〉『結合点』,連結(接合,合流)点 / 〈C〉(鉄道の)『連絡駅』,接続駅

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/26 05:25:51」(JST)

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The cementoenamel junction, frequently abbreviated as the CEJ, is an slightly visible anatomical border identified on a tooth. It is the location where the enamel, which covers the anatomical crown of a tooth, and the cementum, which covers the anatomical root of a tooth, meet. Informally it is known as the neck of the tooth.^[1] The border created by these two dental tissues has much significance as it is usually the location where the gingiva attaches to a healthy tooth by fibers called the gingival fibers.

Active recession of the gingiva reveals the cementoenamel junction in the mouth and is usually a sign of an unhealthy condition.

There exists a normal variation in the relationship of the cementum and the enamel at the cementoenamel junction. In about 60–65% of teeth, the cementum overlaps the enamel at the CEJ, while in about 30% of teeth, the cementum and enamel abut each other with no overlap. In only 5–10% of teeth, there is a space between the enamel and the cementum at which the underlying dentin is exposed.^[2]

References

^ Clemente C (1987). Anatomy, A Regional Atlas of the Human Body. Baltimore: Urban & Schwarzenberg. ISBN 0-8067-0323-7.
^ Carranza FA, Bernard GW (2002). "The Tooth-Supporting Structures". In Newman MG, Takei HH, Carranza FA. Carranza’s Clinical Periodontology (9th ed.). Philadelphia: W. B. Saunders. p. 43. ISBN 978-0721683317.

External links

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English Journal

Micro-CT Evaluation of C-Shaped Mandibular First Premolars in a Brazilian Subpopulation.

Ordinola-Zapata R1, Bramante CM, Minotti PG, Cavenago BC, Gutmann JL, Moldauer BI, Versiani MA, Duarte MA.
International endodontic journal.Int Endod J.2014 Sep 22. doi: 10.1111/iej.12380. [Epub ahead of print]
AIM: To describe morphometric aspects of the internal anatomy of C-shaped mandibular premolars from a Brazilian subpopulation using micro-CT analysis.METHODOLOGY: First mandibular premolars with radicular grooves (n = 123) were scanned using a microcomputed tomography system. After cross-section ana
PMID 25244658

Analysis of facial bone wall dimensions and sagittal root position in the maxillary esthetic zone: a retrospective study using cone beam computed tomography.

Wang HM, Shen JW, Yu MF, Chen XY, Jiang QH, He FM.
The International journal of oral & maxillofacial implants.Int J Oral Maxillofac Implants.2014 Sep-Oct;29(5):1123-9. doi: 10.11607/jomi.3348.
PURPOSE: To determine the thickness of the facial bone wall and the sagittal angulation between the long axis of the teeth and the long axis of the associated alveolar bone in the maxillary esthetic zone using cone beam computed tomography (CBCT).MATERIALS AND METHODS: A retrospective radiographic s
PMID 25216138

Effect of ProTaper Universal, Endoflare, Revo-S, HyFlex Coronal Flaring Instruments, and Gates Glidden Drills on Crack Formation.

Arslan H1, Karataş E2, Capar ID3, Ozsu D2, Doğanay E2.
Journal of endodontics.J Endod.2014 Aug 12. pii: S0099-2399(14)00561-5. doi: 10.1016/j.joen.2014.06.004. [Epub ahead of print]
INTRODUCTION: The aim of the present study was to evaluate crack formation after flaring root canals with Gates Glidden drills and ProTaper Universal (SX; Dentsply Maillefer, Ballaigues, Switzerland), Endoflare (MicroMega, Besançon, France), Revo-S (MicroMega), and HyFlex (Coltene-Whaledent, Allste
PMID 25127932

Japanese Journal

Comparison of diameters at the cementoenamel junction between South Asians and Japanese

NOSE Hirohisa,TAWADA Yasuyuki,WATANABE Fumihiko,KAGEYAMA Ikuo
Odontology : Official journal of the Society of the Nippon Dental University = 歯学 99(1), 22-27, 2011-01-01
NAID 10029303174

Comparison of micro push-out bond strengths of two fiber posts luted using simplified adhesive approaches

MUMCU Emre,ERDEMIR Ugur,TOPCU Fulya Toksoy
Dental materials journal 29(3), 286-296, 2010-05-01
… Sixty extracted single-rooted human maxillary central incisor and canine teeth were sectioned below the cementoenamel junction, and the roots were endodontically treated. …
NAID 10026470240

"Taurodontism" an endodontic challenge: a case report

Bharti Ramesh,Chandra Anil,Tikku Aseem P.,Wadhwani Kulvindar K.
Journal of Oral Science 51(3), 471-474, 2009
… An enlarged pulp chamber, apical displacement of the pulpal floor, and no constriction at the level of the cementoenamel junction are the characteristic features. …
NAID 130000126150

Related Pictures

★リンクテーブル★

リンク元	「エナメルセメント境」「セメントエナメル境」「CEJ」「cemento-enamel junction」「tooth cervix」
関連記事	「junction」

「エナメルセメント境」

Cementoenamel junction
	Labeled molar
	The CEJ is the more or less horizontal demarcation line that distinguishes the crown (A) of the tooth from root (B) of the tooth.
	Anatomical terminology

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英: cementoenamel junction
関: セメントエナメル境、歯頚部

歯のエナメル質とセメント質の境界部

「セメントエナメル境」

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英: cemento-enamel junction、cementoenamel junction、CEJ
関: エナメルセメント境、歯頚部

「CEJ」

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セメントエナメル境

関: cemento-enamel junction、cementoenamel junction、tooth cervix

「cemento-enamel junction」

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