The anatomy and pathology of the teeth / By C.F.W. Bödecker.

  • Bödecker, C. F. W. (Carl F. W.)
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: The anatomy and pathology of the teeth / By C.F.W. Bödecker. 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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    canine or cuspid tooth ; the sockets of the molars are the widest, and are usually subdivided into three smaller cavities, corre- sponding in number with the roots of the teeth. The socket of the third molar is usually single, while that of the first bicuspid exhibits two cavities, and that of the second bicuspid usually but one. The sockets for the incisors are always single. They are of roundish form for the central, but for the lateral incisors the sides of the receptacles are somewhat compressed. The antrIIIII is the largest of the so-called pneumatic spaces of the skull. It is a cavity of four surfaces,—the upper or orbital surface; the posterior surface, produced by the maxillary tuber- osity ; the anterior or facial surface, which is slightly depressed bv the canine fossa; and the inner or nasal surface. When regularly formed, the antrum has the shape of a triangular pyramid, and either the upper orbital or the inner nasal sur- face may be considered the base of the pyramid. The inner wall of the antrum is divided by the articulation of the turbi- nated bone into an upper and a lower half (pars supra- and pars infra-tarbinalis). The lower half is made up anteriorly by the superior maxillary, and posteriorly by the vertical lamella of the palate bone. The upper half is supplied with several openings, which are quite large in the skeleton, but much smaller in the vital state, in which condition the bones are covered by their lining membrane. If the mucous covering closes these gaps, such membranous portions Zuckerkandl* terms fontanelles. Of these, he designates one as anterior and one as posterior. There is left only a longitudinal opening, the ostium maxillare, within the unciform process of the ethmoid bone, and one ethmoidal cell, invested by a mucous membrane, communicating with the frontal sinus and the nasal cavity. The lower surface or floor of the antrum is formed by a thin bony plate. Between this and the alveoli of the teeth is a layer of spongy bone. The latter substance, as a rule, is thinnest over the roots of the molar teeth. The roots of the incisor teeth are not within the boundary of the antrum. The canine and the first bicuspid, though near the floor of the antrum, do not quite reach it, the floor being overlaid by a bulky osseous structure. The apices of the roots of the second bicuspid and the buccal roots of the molars are in contact with the floor of the antrum. The second bicuspid *]Srormale unci Patholoffische Anatoniie der jSTasenhole. Wien, 1882.