odontoblastn.

Brit.

/ɒˈdɒntə(ʊ)blɑːst/,

/əʊˈdɒntə(ʊ)blɑːst/,

/ɒˈdɒntə(ʊ)blast/,

/əʊˈdɒntə(ʊ)blast/, U.S.

/oʊˈdɑn(t)əˌblæst/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: odonto- comb. form, -blast comb. form.

Etymology: < odonto- comb. form + -blast comb. form, after German Odontoblast (W. Waldeyer, in the source translated in quot. 1870 at main sense). Compare French odontoblaste (1892). N.E.D. (1902) gives the pronunciation as (odǫ·ntŏblæst) /əʊˈdɒntəblæst/.

Any of a layer of cells lining the pulp cavity of a tooth that are responsible for laying down dentine.

ΘΚΠ

the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > cell

odontoblast1870

stellate reticulum1870

1870 H. Power tr. S. Stricker Man. Human & Compar. Histol. I. xv. 466 The dentinal fibres are enormously elongated processes of the the [sic] so-called dentinal cells, or cells of the dentinal pulp (odontoblasts [Ger. Odontoblasten]).

1874–5 Proc. Royal Soc. 23 95 The odontoblast layer is very distinct, and the processes passing from these cells into the dentine-tubes are often visible.

1912 Proc. Royal Soc. B. 85 79 From this plexus.., fine neurofibrils pass between and around the odontoblasts, enclosing them in a fine meshwork.

1947 Evolution 1 36/1 These modifications were the increase in activity of the odontoblasts and ameloblasts to lay down more dentine and enamel while the tooth was still in the formative stage.

1976 Nature 22 July 280/1 The odontoblasts lining the pulp cavity remain viable through life.

1993 S. J. Ettinger Pocket Compan. Textbk. Vet. Internal Med. lxxxii. 418 If the fracture extends into the dentin, inflammation occurs in the pulp and odontoblasts synthesize reparative dentin, insulating the pulp.

Derivatives

odontoˈblastic adj. of, relating to, or consisting of odontoblasts; of the nature of an odontoblast.

ΚΠ

1888 A. H. Buck Ref. Handbk. Med. Sci. VI. 746/2 Around the periphery of the pulp, there exists a layer of cells called the odontoblastic layer, or the membrana eboris.

1919 Proc. Royal Soc. 1917–19 B. 90 507 Note the fine-cut lines of the dentine and odontoblastic cells.

2002 Arch. Oral Biol. 47 147 In rats, sucrose increases dental caries and impairs odontoblastic function by reducing dentine apposition during primary dentinogenesis.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	odontoblast
释义	odontoblastn. Brit. /ɒˈdɒntə(ʊ)blɑːst/, /əʊˈdɒntə(ʊ)blɑːst/, /ɒˈdɒntə(ʊ)blast/, /əʊˈdɒntə(ʊ)blast/, U.S. /oʊˈdɑn(t)əˌblæst/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: odonto- comb. form, -blast comb. form. Etymology: < odonto- comb. form + -blast comb. form, after German Odontoblast (W. Waldeyer, in the source translated in quot. 1870 at main sense). Compare French odontoblaste (1892). N.E.D. (1902) gives the pronunciation as (odǫ·ntŏblæst) /əʊˈdɒntəblæst/. Any of a layer of cells lining the pulp cavity of a tooth that are responsible for laying down dentine. ΘΚΠ the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > cell odontoblast1870 stellate reticulum1870 1870 H. Power tr. S. Stricker Man. Human & Compar. Histol. I. xv. 466 The dentinal fibres are enormously elongated processes of the the [sic] so-called dentinal cells, or cells of the dentinal pulp (odontoblasts [Ger. Odontoblasten]). 1874–5 Proc. Royal Soc. 23 95 The odontoblast layer is very distinct, and the processes passing from these cells into the dentine-tubes are often visible. 1912 Proc. Royal Soc. B. 85 79 From this plexus.., fine neurofibrils pass between and around the odontoblasts, enclosing them in a fine meshwork. 1947 Evolution 1 36/1 These modifications were the increase in activity of the odontoblasts and ameloblasts to lay down more dentine and enamel while the tooth was still in the formative stage. 1976 Nature 22 July 280/1 The odontoblasts lining the pulp cavity remain viable through life. 1993 S. J. Ettinger Pocket Compan. Textbk. Vet. Internal Med. lxxxii. 418 If the fracture extends into the dentin, inflammation occurs in the pulp and odontoblasts synthesize reparative dentin, insulating the pulp. Derivatives odontoˈblastic adj. of, relating to, or consisting of odontoblasts; of the nature of an odontoblast. ΚΠ 1888 A. H. Buck Ref. Handbk. Med. Sci. VI. 746/2 Around the periphery of the pulp, there exists a layer of cells called the odontoblastic layer, or the membrana eboris. 1919 Proc. Royal Soc. 1917–19 B. 90 507 Note the fine-cut lines of the dentine and odontoblastic cells. 2002 Arch. Oral Biol. 47 147 In rats, sucrose increases dental caries and impairs odontoblastic function by reducing dentine apposition during primary dentinogenesis. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1870
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