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
Catalogue details

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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    CHAPTER THIRD. OF THE MANNER IN WHICH THE TEETH ARE FORMED. The teeth are formed in a manner peculiar to them- selves, differing from the mode observed in the formation of bones in general; instead of having for their basis car- tilage or membranous substance, as the cylindrical and flat bones have, they are formed from a soft pulpy sub- stance, which possesses the shape of the body of the tooth to be produced. [The pulp of a tooth, according to Mr. Nasmyth, is of a cellular structure, having the aspect when examined under a microscope, of small vesicles—varying in size from the smallest perceptible microscopic appearance, to an eighth of an inch in diameter. These are arranged in layers throughout the body of the pulp. When macerated, these layers, says Mr. N. present an irregu- lar reticular appearance/' and are interspersed with granules.] Each pulp is covered by a membrane strongly attached to the gum, and to the pulp at its base, so that the pulp at its edge is loosely contained within the membrane, which is only reflected over it; at the base the pulp is weakly connected with the alveolar cavity in the jaw. When a jaw has been minutely injected, we find that the pulps are vascular, and also the membranes by which they are enveloped These membranes may with care
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