File:The Dental cosmos (1891) (14778979904).jpg

Identifier: dentalcosmos3318whit (find matches)
Title: The Dental cosmos
Year: 1891 (1890s)
Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, 1821-1895 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, L. Pierce (Lovick Pierce), b. 1877
Subjects: Dentistry Dentistry
Publisher: Philadelphia, S. S. White Dental Manufacturing Co
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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bution of the cement-lacunae is almost as great asthat in the disposition of the tubules. In some cases they are con-fined to the center of the nodule, in others they are distributedthroughout the whole mass ; the latter is particularly the case wherethe whole tissue of the pulp becomes involved in the process of calci-fication, as seen in Fig. 61, the former where the tissue is pressedaside by the growth. I have not, however, considered it necessaryon this ground to make a principal distinction between these twogroups of pulp-nodules. ANATOMY AND PATHOLOGY OF THE TUSKS OF THE ELEPHANT. 429 Regarding the changes which take place in the pulp leading to theformation of pulp-nodules, a very fair description is given by Salter( Dental Pathology and Surgery, New York, 1875) : The patho-logical changes consist in the impregnation of the various tissues ofthe pulp with calcareous matter, involving more and more of thestructure of the pulp and its ultimate conversion, under favorable Fig. 61.
Text Appearing After Image:
Showing the appearance of the peripheral portion of a section of a decalcified nodule (a, b, c),with the bordering pulp-tissue. 90 : i. The blending of the fibers of the pulp with the basis-sub-stance of the nodule is not brought out so clearly as it appeared in the preparation. circumstances, into osteo-dentine. The whole of the tissues, cells,nuclei, connective tissue, blood-vessels, and multitudes of nerves areswallowed up and obliterated by the calcification process. Hulme(Dental Cosmos, 1861, p. 562) writes in the same sense : In theformation of these nodules of ossific matter in the substance of thepulp, all the elements which enter into the formation of this organ 43° THE DENTAL COSMOS. seem to be included (nucleated cells, connective tissue, blood-vessels,and nerves). The appearance usually presented by the margin of nodules in thepulp of the elephants tusk, as seen in decalcified specimens, is repre-sented in Fig. 61. It will be seen that there is a direct conversion ofthe c

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