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.

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    of importance should be rightly understood, in order to comprehend some of the conditions that are likely to exist in human teeth dependent upon an abnormal condition of the organs from which they are developed. 22. Cementum.—The term cementum is, in my opinion, an unfortunate one, since it only exists in the light of a cement or binding tissue in the teeth of graminivorous animals ; while it is in- tended to include also a large and important structure in the teeth of the lower forms of mam- malia, as well as an abnormal growth upon the fangs of human teeth, and also the delicate mem- brane that covers the crown of human and other teeth, and which exists, as correctly observed by Mr. Tomes, on those teeth which have an external investment of cement. 23. Correspondence between the Quantity of Enamel and that of the Cementum is inverse.— According to the size of the tooth, it may be laid down as a law, that the enamel exists on teeth in an inverse ratio to the cementum. In comparative anatomy this is capable of demonstration. The teeth of the walrus, dolphin,* bottled-nosed whale,f (hyperoodon) gangetic dolphin,}: and fossil zeuglodon,§ in all of which the cementum is largely developed, have the enamel existing only * Owen’s ‘'Odontography,” p. 346. f Owen, I. c. 349. t Sir Everard Home, Phil. Tran. 1818. § Owen, /. c. 362.