The origin and formation of the dental follicle : The first memoir on the development of the teeth / By Drs. Ch. Legros and E. Magitot. A translation from the French, with introduction and notes, by M.S. Dean. Authorized and rev. by Dr.Magitot, the surviving author.

  • Legros, Charles, 1834-1873.
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: The origin and formation of the dental follicle : The first memoir on the development of the teeth / By Drs. Ch. Legros and E. Magitot. A translation from the French, with introduction and notes, by M.S. Dean. Authorized and rev. by Dr.Magitot, the surviving author. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    Fig. 43.—Vertical transverse section of the lower jaw of a human foetus, 56 centimetres [22f inches] in length; corresponding to about the period of birth. (Magnified 80 diam.) b, Osseous formation; d, oral epithelium; E, lowest layer of the Malpighian stratum; F, debris of the epithelial lamina; g, enamel-organ; H, dental bulb; I, follicular wall; j, cap of dentine and enamel; K, debris of the second- ary cord; L, bulb of the permanent tooth, capped with the enamel-organ. Fig. 44.— Dental follicle of a permanent tooth of a cat; vertical and transverse section. From a preparation of Thiersch. (Magnified 14 diam.) Taken from the fifth edi- tion of Kolliker's Elements of Human Histology. A, Dental bulb, the external zone of which is formed by the odontoblasts; b, dentine; c, enamel; d, internal epithe- lial layer of the adamantine organ or adamantine mem- brane [the layer of prismatic or columnar cells that we denominate ameloblasts]; e, gelatinous tissue of the en- amel-organ [stellate reticulum]; /, external epithelial layer of the adamantine organ [enamel-organ]; g, internal layer of the dental sac or follicular wall; h, external layer of the same. [The white space seen between the layer of ameloblasts and the developing enamel is evidently accidental. See remarks on Fig. 24.]