A Manual of Dental Anatomy : Human And Comparative
The book A Manual of Dental Anatomy : Human And Comparative was written by author Tomes, Charles S. (Charles Sissmore), Sir, 1846-1928 Here you can read free online of A Manual of Dental Anatomy : Human And Comparative book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Manual of Dental Anatomy : Human And Comparative a good or bad book?
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But it is quite probable that the dentinal sheath has no separate existence in the dentine until after its disintegration by a strong acid. As I have elsewhere expressed it, the most external portions of the odontoblasts undergo a metamorphosis into a gelatigenous matrix, which is the seat of calcification, while their most central portions remain soft and unaltered as the fibrils. Intermediate between the central perma- nently soft fibril and the general calcified matrix, is that portion which... immediately surrounds the fibril, namely, the 172 A MANUAL OF DENTAL ANATOMY. dentinal sheath ; as expressed by Dr. Lionel Beale they are protoplasm, formed material, and calcified formed material. Just as in the case of enamel, there are writers who hold that the odontoblasts are not themselves converted into dentine, but that they preside over the secretion of a material which is. Thus Kolliker and Lent believe that while the canals and their contents are continuations of the odontoblasts, the matrix is a secretion either from these cells or from the rest of the pulp, and so is an " intercellular" substance.
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