An atlas of skiagrams : illustrating the development of the teeth with explanatory text / by Johnson Symington and J. C. Rankin.

  • Johnson Symington
Date:
1908
Catalogue details

Licence: In copyright

Credit: An atlas of skiagrams : illustrating the development of the teeth with explanatory text / by Johnson Symington and J. C. Rankin. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    Adult Male, Right Side of a Macerated and Dried Skull. This specimen was taken from a dissecting-room subject, the skull of which was macerated and mounted in the anatomical museum as an example of a well-developed set of teeth. The skiagram fully confirms this diagnosis, for the roots as well as the crowns of the teeth. Owing to the extensive growth of dentine and the consc<juently solid character of the teeth, their pulp cavities are small. The course of the inferior dental canal is distinctly seen in the skiagram. It ter- minates opposite the anterior part of the second bicuspid. The two black spots on the mandible are due to holes made in the bone when it was mounted. The posterior wall of the antrum is indicated by a wliite line passing downwards and a little backwards, slightly behind the level of the posterior border of the upper wisdom tooth. This line is continued forwards in close relation to the roots of the three molar teeth, and maps out the level of the antral floor. Opposite the first molar it turns upwards and forwards, passing near the fang of the second bicuspid. The skiagram also shows that the antrum extends downwards ])elow the level of the hard palate opposite the molars, and that the deepest part of the sinus is between the roots of the first and second molars. 4t5