. A laboratory manual and text-book of embryology. Embryology. THE DEVELOPMENT OF THE TEETH l65 The enamel cells about the future root of the tooth remain cuboidal or low col- umnar in form, come into contact with the outer enamel cells and the two layers constitute the epithelial sheath of the root which does not produce enamel prisms. The Dental Papilla.—The outermost cells of the dental papilla at the end of the fourth month arrange themselves as a definite layer of columnar epithelium. Since they produce the dentine, or dental bone, these cells are known as odonto- blasts. When the dentine
. A laboratory manual and text-book of embryology. Embryology. THE DEVELOPMENT OF THE TEETH l65 The enamel cells about the future root of the tooth remain cuboidal or low col- umnar in form, come into contact with the outer enamel cells and the two layers constitute the epithelial sheath of the root which does not produce enamel prisms. The Dental Papilla.—The outermost cells of the dental papilla at the end of the fourth month arrange themselves as a definite layer of columnar epithelium. Since they produce the dentine, or dental bone, these cells are known as odonto- blasts. When the dentine layer is developed, the odontoblast cells remain in- ternal to it and branched processes from them (the dental fibers of Tomes) extend into the dentine and form the dental canaliculi. Internal to the odontoblast layer the mesenchymal cells differentiate into the dental pulp, popularly known. HH -\n(N. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders
Size: 1810px × 1381px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1
