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.

  • Fox, Joseph, 1776-1816.
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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    The upper grinders have commonly three fangs, two situated on the outer part of the tooth, and one on the in- ner; the inner fang is very oblique in its direction, and is larger and rounder than the others. Those of the under jaw have two fangs, one placed forwards, the other back- wards; they are rather flat, and continue broad all down their length. Sometimes molares of the upper jaw are met with hav- ing four distinct fangs.* I have one with five fangs, which is the only one I ever saw.f The molares of the under jaw now and then have three fangs. J The third molaris is called dens sapientiae; it is smaller than the others, its body is rather rounder, and the fangs are not so regular and distinct: they often appear as if squeezed together, and sometimes there is but one fang. The dentes sapientiae of the lower jaw often have their fangs curved, and sometimes they are so much inclined inwards, as scarcely to rise above the ridge of the coro- noid process. The incisores of the upper jaw being much broader than the same teeth in the under jaw, cause the other teeth to be placed farther back in the circle than the cor- responding teeth of the lower jaw; hence in a well-formed mouth, when the teeth are shut close, the central inci- sores of the upper jaw come over the central and half of the lateral incisores of the lower jaw: The lateral incisor of the upper jaw covers the half of the lateral incisor, and more than half of the cuspidatus of the under jaw. The cuspidatus of the upper jaw falls between and projects a little over the cuspidatus and first bicuspis of the under jaw. The first bicuspis of the upper jaw falls partly upon the two bicuspides in the lower jaw: The second bicus- pis shuts upon the second bicuspis and the first molaris: * Plate IX. Fig 11. f Fig. 13. JFig.6.