Dental caries in relation to oral osmosis / by Ragnar Eckermann.

  • Eckermann, Ragnar.
Date:
1919
Catalogue details

Licence: Public Domain Mark

Credit: Dental caries in relation to oral osmosis / by Ragnar Eckermann. Source: Wellcome Collection.

    232/280 (page 218)
    ' 2. That from’ the ‘carious point of origin to the pulp’ a weakly coloured red or yellow zone is aby ays to be seen. - | 3.° That ‘this coloured area of the tooth is much more resistant to acids and stains than the fresh dentine. (A fact proved by the author and confirmed by Causu 1.) 4, That the invading harmful process, by whatever it may be caused, has an object, negatively seen — that of dissolving and annihilating the dentine, — and will of course never harden or render the tissue more resistant than it was before. | 7 5. That consequently this hardened and coloured area of the dentine, forming a zone down to the pulp, must be a product of the tooth ttself. ? 6. That this hardened part of the tooth always terminates in the pulp wall, has the colouration of plasm, contains -iron and blood matter and follows the way of communication between the carious point and the pulp — the dentine tubules. It must, consequently, in the name of human reason, be a product of the pulp, 7. e., represent a flow of pulp plasm through the dentine-tubules up to the point of caries initial upon the surface of the tooth. But what can be the driving force of this stream of plasm? We know: 1. That-in the tubules there flows a liquid which obviously must be of plasmoid character and which stands in connection with the pulp organ. 2 . 2. That the blood in certain cases, e.'g.,'in that of trauma is pressed out into the tubuli, colouring the whole tooth red, which colour can also gradually disappear. 3. That the blood in. general is very sensitive to physical influence. 4. That the pulp blood is also very sensitive to external influence. i t CAUSH, Dental Record 2. 1916. 57. 2 cf. Chapter IV.