Principles and practice of operative dentistry . - dentin Fig. 155.—Transverse section of root of human bicuspid, showing radiation of the dentinal Fig. 156.—Normal dentin at dento-enamel junction, s! ing dentinal tubuli. (F. B. Noyes.) X HISTOLOGY OF THE DENTAL TISSUES. 43 The Dentinal Tubuli.—The matrix is everywhere permeated by asystem of parallel canaliculi or tubuli, the dentinal tubuli, which radiatefrom the pulp-cavity towards the outer surface of the deutiu (Fig. 155).The diameter of the tubuli is from to millimetre and up-ward (Frey). (Plate III.) The dentinal
Principles and practice of operative dentistry . - dentin Fig. 155.—Transverse section of root of human bicuspid, showing radiation of the dentinal Fig. 156.—Normal dentin at dento-enamel junction, s! ing dentinal tubuli. (F. B. Noyes.) X HISTOLOGY OF THE DENTAL TISSUES. 43 The Dentinal Tubuli.—The matrix is everywhere permeated by asystem of parallel canaliculi or tubuli, the dentinal tubuli, which radiatefrom the pulp-cavity towards the outer surface of the deutiu (Fig. 155).The diameter of the tubuli is from to millimetre and up-ward (Frey). (Plate III.) The dentinal tubules are similar to the canaliculi of bone in that theyare provided with a special lining layer or sheath, the dentinal sheath ofNeumann. In following the course of the dentinal tubuli, if will be noticed thatthey do not form a straight line in their passage from the pulp-canal to thesurface of the dentin, but that they describe two, more often three, undu-lating curves, and within these many very small, more or less angular orspiral bends, of which about two hundred may be counted in the lengthof a line (Fig. 156). (Eetzius.) It is further ob
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901
