On the origin and development of the pulps and sacs of the human teeth / by John Goodsir.
- Date:
- [1839?]
Licence: Public Domain Mark
Credit: On the origin and development of the pulps and sacs of the human teeth / by John Goodsir. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![deeper in ihe jaw than that of the centra], by a length equal to the protruding portion of the latter. This change of level had not, however, taken place in the case of the alveoli, that of the central being rather deeper than the lateral. The space interven- ing between the bottom of the alveolus of the central tooth, and the fundus of its sac, was occupied by a spongy filamentous tissue, through which the dental vessels and nerves proceeded. 14.—The lower jaw of an infant, which had cut all its milk teeth, and which was probably between four and five years old, was pre- pared in the same manner as the last. The sac of the anterior permanent molar (6, Fig. 25,) was Fig. 25. Fig 26. situated under the gum in front of the coronoid process, and a new sac and pulp of a smaller size (7,) had appeared buried in the base of that process. The cavity (6) was again lengthened out, being attached ante- riorly, at the anterior edge of the base of the process, to the gum, and poste- riorly to the top of the new sac (7.) That portion of the cavity formerly attached to the sac (6,) was now almost obliterated. 15.—The posterior part of the lower jaw of a child about six years old was prepared by removing a section from its internal pos- terior aspect, and making at the same time a longitudinal section of the gum. The sac (7, Fig. 26,) had advanced from under the coronoid process; and an- other very small sac and pulp had appeared inclosed in a bony crypt under the process, and communicatingthrough the up- per part of the bony cell of the sac (7,) with the gum, where it terminated in an opaque line or tail, the last remains of the surface of adhesion of the dental groove. Section II.—A Description of the Pulps and Sacs FROM THEIR FIRST APPEARANCE IN THE EMBRYO TILL THE ERUPTION OF THE WiSDOM TeeTH. When we exaniine the upper jaw of a human embryo at the sixth week, there is perceived between the lip and a semicir- calar lobe of a horse-shoe form, (which is the primitive condi- tion of the palate) a deep narrow groove Avhich terminates on each](https://iiif.wellcomecollection.org/image/b21955451_0021.jp2/full/800%2C/0/default.jpg)
