The diseases of the human teeth : their natural history and structure : with the mode of applying artificial teeth, etc., etc. / by Joseph Fox and Chapin A. Harris ; with two hundred and fifty illustrations.
- Joseph Fox
- Date:
- 1855
Licence: Public Domain Mark
Credit: The diseases of the human teeth : their natural history and structure : with the mode of applying artificial teeth, etc., etc. / by Joseph Fox and Chapin A. Harris ; with two hundred and fifty illustrations. Source: Wellcome Collection.
Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)
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![each particular tooth, and bone is deposited upon it: It then becomes gradually smaller, until it terminates in a point. If a tooth have two or more fangs, the pulp divides, and the ossification proceeds accordingly. The cavity within a tooth, as it is forming, is at first very considerable; it becomes less as the formation advances, until it arrives at a certain point, when a cavity is left in it extending nearly through the whole length, and re- taining the shape of the tooth.* In the crown of the tooth, the cavity is of the same figure, and it divides into as many canals as there are fangs to the teeth, a canal extends through each fang connected with the cavity in the body of the tooth: Into this cavity the nerves and blood-vessels enter and ramify upon the membrane of the pulp, which remains to line the cavity after the formation of the teeth. In this man- ner the nerves give sensation to the teeth, and the inter- nal parts of them are nourished. [MANNER OF THE FORMATION OF THE ENAMEL.] The enamel is situated upon all that part of a tooth which in the healthy state of the gums is not covered by them. This portion of the tooth is called the body, or crown. It is formed by the membrane which invests the pulp: When a shell of bone has been formed upon the pulp, this membrane secretes a fluid, from which a very white soft substance is deposited upon the bone; this at first is of a consistence not harder than chalk, for it may be scratched or scraped off by the nail; it how- ever soon grows hard, and seems to undergo a process similar to that of crystalization, for it takes a regular and peculiar form. ♦Plate IX. Fijr. 4.](https://iiif.wellcomecollection.org/image/b21120559_0052.jp2/full/800%2C/0/default.jpg)
