The pathology of dental caries / by C. Spence Bate.

  • Bate, C. Spence.
Date:
1864
Catalogue details

Licence: Public Domain Mark

Credit: The pathology of dental caries / by C. Spence Bate. Source: Wellcome Collection.

    17/100 (page 13)
    ing at the origin of the development of the enamel. An examination of these fissures shows that while they follow the direction of the enamel, the columns which build up the structure pass from the dentine to the surface of the tooth in a some- what spiral course. These fissures are sometimes very numerous, and I am able to account for them only on the following hypothesis. 13. Mode of First Deposition of the Enamel on the Surface of the Dentine.—When a tooth is in the early stages of development, the enamel is first deposited on the dentine at the apex, and increases over the surface in an equal area on all sides; but its progress is not in a continuous ring round the tooth, but by a series of short uncon- nected longitudinal lines (Fig. 8), that, as they progress in length, increase in breadth, and, coming into contact, unite completely, under normal con- ditions ; but, where the power of development Fig. 8. has been weakened from some unknown cause, the union is not perfect: hence the presence of those fissures at the very commencement of the development of the enamel. These appear- B