Interstitial gingivitis and pyorrhoea alveolaris.

  • Talbot, Eugene S. (Eugene Solomon), 1847-1924.
Date:
1913
Catalogue details

Licence: Public Domain Mark

Credit: Interstitial gingivitis and pyorrhoea alveolaris. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    When irritation takes place in a nerve or part of bone wliicli is about to be a])sorbed, niultiniiclear cells arise at the border in the periosteum and jjeridental membrane. They attach them- selves to the surface of the bony trabecule^, xlccording to Sud- dutii, ^'the absorber and the absorbed must be in touch with each X 300. No. 2, projection ocular. D. I), obj. Zeiss. Fir,. 90.—Section of Peridextal Membrane, Showing Lacunar Absorption in Dog. J, Alveolar Process. O, Lacunar Absorption. I^, Inflamed Peridental Membrane. other. Kolliker has named these cells ''Osteoclasts, which term has come into general use. Very soon after these cells make their appearance, cavities are seen in the bone tissue. These cavities are called Howship's lacunae. Lacunar absorp- tion, as elsewhere shown, takes place as a result of irritation and overstinnilation. Fig. cS9 shows a cross section of the end of one of the buccal roots of Fig. 91. As will be observed, this tooth was held in place by two buccal roots. As much resistance was h'(|iiii-(Ml of tliese. two I'oots as was formerly required of three.