Micro-organisms of the human mouth : the local and general diseases which are caused by them / by Willoughby D. Miller.
- Date:
- 1890
Licence: Public Domain Mark
Credit: Micro-organisms of the human mouth : the local and general diseases which are caused by them / by Willoughby D. Miller. Source: Wellcome Collection.
Provider: This material has been provided by the University of Toronto, Harry A Abbott Dentistry Library, through the Medical Heritage Library. The original may be consulted at the Harry A Abbott Dentistry Library, University of Toronto.
151/400 page 125
![do not penetrate tlie cavities in the basis-snb.stance of the tissues of the tooth, but appear only as secon<Iary formations, owing to the decay of medulhiry elements. Abbott's communication, from which these statements are taken, is accompanied l)y a number of illustrations, of which one is reproduced in Fig. 54, together with the explanation aiH'()ni]»anying it. Fig. 54. Cross-sectiox of Carious Dentine. After Abbott. At a certain distance ti'om the decay the canalieuli look unchanged, and each contains the central transverse section of the dentinal liber, with its delicate radiated offshoots (Fig. 54, (/). Xearer to the decay we meet with moderately enlarged canalieuli, the center of which is occupied by a cluster of protoplasm, the granules and threads of which have readily taken up the car- mine (Fig. 54, h). One step farther we find the canalieuli con- siderably enlarged, to double or trelde their original size, and thev are tilled with yellow protoplasm, plainly exhibiting the net-like ari-angcnu'iit of the li\'ing matter (Fig. 54, c, '■), The](https://iiif.wellcomecollection.org/image/b2120293x_0151.jp2/full/800%2C/0/default.jpg)
