A text-book of dental histology and embryology, including laboratory directions . Dentine at dento-enamel junction, showing tubules cut longitudinally: Dt, dentinaltubules; D, dentine matrix. (About 760 X) dentine seen under the microscope was taken from the crownor the root of a tooth. The structural characteristics of thetwo regions may be summarized as follows: In the crown,the tubules show both the primary and the secondary curves. 176 THE DENTINE In the root, the tubules show only the secondary the crown, the lateral branches are few and inconspicuousand the tubules branch in a
A text-book of dental histology and embryology, including laboratory directions . Dentine at dento-enamel junction, showing tubules cut longitudinally: Dt, dentinaltubules; D, dentine matrix. (About 760 X) dentine seen under the microscope was taken from the crownor the root of a tooth. The structural characteristics of thetwo regions may be summarized as follows: In the crown,the tubules show both the primary and the secondary curves. 176 THE DENTINE In the root, the tubules show only the secondary the crown, the lateral branches are few and inconspicuousand the tubules branch in a characteristic way at the dento-enamel junction. In the root, the lateral branches are very Fig. 137. Dentine from the root, showing tubules cut longitudinally. (About 700 X) numerous throughout the length of the tubule, and theyend in the characteristic spaces of the granular layer ofTomes. The Dentinal Fibrils.—In life the dentinal tubules areoccupied by protoplasmic projections of the odontoblasts THE DENTINAL FIBRILS 177 known as the dentinal fibrils, or fibers of Tomes. As thedentine matrix is formed and calcified under the influenceof the odontoblasts, a portion of their protoplasm is left inthe tubules of the matrix as the dentinal fibril. These Fig. 138
Size: 1675px × 1493px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectteeth, bookyear1912
