A text-book of dental histology and embryology, including laboratory directions . Longitudinal section of the peridental membrane in the gingival portion (thelingual gingivus): D, dentine; N, Nasmyths membrane; C, cementum; F, fibers sup-porting the gingivus; F1, fibers attached to the outer layer of the periosteum overthe alveolar process; F2, fibers attached to the bone at the rim of the alveolus;B, bone. (About 30 X) gingival line. At A the epithelium on the labial surface ofthe gingivus is seen, and at B the epithelium lining thegingival space. On the proximal sides of the roots the fibers
A text-book of dental histology and embryology, including laboratory directions . Longitudinal section of the peridental membrane in the gingival portion (thelingual gingivus): D, dentine; N, Nasmyths membrane; C, cementum; F, fibers sup-porting the gingivus; F1, fibers attached to the outer layer of the periosteum overthe alveolar process; F2, fibers attached to the bone at the rim of the alveolus;B, bone. (About 30 X) gingival line. At A the epithelium on the labial surface ofthe gingivus is seen, and at B the epithelium lining thegingival space. On the proximal sides of the roots the fiberswill be seen passing from the cementum of one tooth to thatof the next. Fig. 223 is a little deeper and shows the fibers Fig. 221. Longitudinal section of peridental membrane of young sheep, showing fiberspenetrating the ceinentum: D, deDtine; C, cementum, showing embedded fibers;F, fibers running to the outer layer of the periosteum, covering the aveolar process;F, fibers running to the bone at the border of the process; B, bone. (About 80 X) ARRANGEMENT 289 attached around the entire circumference of the root. Begin-ning at the middle of the labial surface, the fibers will befound springing from the cementum and passing out atright angles to it, to be lost in the fibrous mat supportingthe epithelium. The fine fibers of the peridental membranecan be followed for about half the distance to the epitheliumbefore they are lost in the coarser mat of gum tissue, anda fairly definite boundary will be seen between what should Fig. 222
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectteeth, bookyear1912
