. Anatomy, descriptive and applied. Anatomy. ?^. Enamel pidp Superficial cells of enamel organ ..Epithelium of oral cavity Basal layer Superficial cells of eitatnel organ 'Enamel pulp -Dentinal papilla Fic 939 —\nlage of the enamel germ con- nected ^ith the oral epithelium by the enamel ledge \ 110 Fig. 940.—First trace of the dentinal papilla. X Epithelium of ~— oral cavity s^Basal layer Part of enamel ledge of a permanent tooth Enamel germ of ane)it toolh cl pulp Dentinal papilla Odontoblasts Enamel cells Fig. 941.—Advanced stage with larger papilla and differentiating enamel pulp. X 1
. Anatomy, descriptive and applied. Anatomy. ?^. Enamel pidp Superficial cells of enamel organ ..Epithelium of oral cavity Basal layer Superficial cells of eitatnel organ 'Enamel pulp -Dentinal papilla Fic 939 —\nlage of the enamel germ con- nected ^ith the oral epithelium by the enamel ledge \ 110 Fig. 940.—First trace of the dentinal papilla. X Epithelium of ~— oral cavity s^Basal layer Part of enamel ledge of a permanent tooth Enamel germ of ane)it toolh cl pulp Dentinal papilla Odontoblasts Enamel cells Fig. 941.—Advanced stage with larger papilla and differentiating enamel pulp. X 110. Fig. 942.—Budding from the enamel ledge of the anlage of tlie enamel germ, which later goes to form the enamel of a permanent tooth; at the periphery of the papilla the odontoblasts are be- ginning to differentiate. X 40. Figs. 939 to 942.—Four stage; 1 the development of a tooth in a sheep i (From Bohm and Davidoff.) iibryo (from the lower jaw) cell activity continues, and in its descent the band appears to meet with a resistance which causes a flattening of its extremity into a continuous lamina. From the outer or labial surface of the shelf epithelial buds are given off successively, ten in number, one for each temporary tooth; the earliest (central incisors) appear about the seventh to the eiijhth week. The growth of each bud continues, and each expands into a flask-like form, the walls covered by a layer of germinal cells, its interior composed of stellate cells. The bulb is now seen to flatten upon its deep surface, as though it had met with an outlined resistance from the mesodermal. 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 Gray, Henry, 1825-1861; Spitzka, Edward Anthony, 1876-1922. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
