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.

    26/100 (page 22)
    (Plate 7, Fig. 13.) The accompanying drawing represents a section of part of the crown of a tooth that had received an injury during the progress of its development; the upper por- tion of the crown being dislocated on its axis, the result was a fracture of the enamel, the ends of the fracture separating from each other: the consequence is that the enamel organ has ossified in the character of cementum as it exists in the teeth of graminivorous mammalia, more closely than I have ever seen it either figured or described. I say the cementum of graminivorous mammals, in preference to that of the megatheroids, cetaceas, &c., because in the former the tissue overlies an enamel, whereas in the latter there is none ; the cemen- tum being separated from the dentine by a well- marked but regular line only. Over enamel, the cementum is separated from the former by an uneven line formed apparently of nodules, each nodule generally carrying a well-marked corpuscle. In the human tooth to which I allude, the nodular condition of the tissue is present, as well as numerous corpuscles also. This decided and well-marked condition of the tissue probably occurs but seldom, and perhaps only as the result of injury, as in the present instance. 28. Cementum in Deep Fissures of Human Teeth.—But it is not uncommon that we meet with deep fissures in the enamel where the normal