Lectures on operative dental surgery and therapeutics . e enamel, fissures areformed reaching to the dentine, leaving that material ex-posed ; and, in these interstices, surrounded by brokencolumns, you may always anticipate disease. 8 The dentine, which constitutes the larger portion of thetooth, is that part which is formed directly by the calcifi-cation of the dental pulp. Under the miscroscope, in-numerable canals present themselves to view; they arecalled canaliculi, and extend in many lines from the sur-face of the pulp to the periphery of the dentine, giving out ^branches or ramuli, as
Lectures on operative dental surgery and therapeutics . e enamel, fissures areformed reaching to the dentine, leaving that material ex-posed ; and, in these interstices, surrounded by brokencolumns, you may always anticipate disease. 8 The dentine, which constitutes the larger portion of thetooth, is that part which is formed directly by the calcifi-cation of the dental pulp. Under the miscroscope, in-numerable canals present themselves to view; they arecalled canaliculi, and extend in many lines from the sur-face of the pulp to the periphery of the dentine, giving out ^branches or ramuli, as they proceed on their course. Thecanaliculi and ramuli freely anastomose into each other,with the peripheral interglobular spaces, and by loops,returning towards the pulp. The method of connectionbetween the dental pulp and the dentine has been a causeof difference of opinion among microscopists and investi-gators; some maintaining, with Professor Owen, thatdistinct fibres enter the dentine, and become a delicatemembranous lining for the dental DENTINE PULP (I. Dentinal compartments of the original dentinal cells. h. Anas-tomoses of the ramuli with each other, with the intertubular cells,and with the cells at periphery of dentine, c. Earthy matter found ininterspaces of tubes and cells, e. Aneurismal like dilatations of dentinaltubuli. /. Cells of intertubular tissue of ramuli sent off from the maininterdentinal tubes into that tissue, g. The modified peripheral layerof the dentine at g, to the superior sensibility of which JNl. Duval firstcalled attention, and distinguished by the name of dictyodonte.—After Owen. Professor Owens view of the case may be illustrated by adescription of what occurred on dissecting the tusk of anelephant. Although the pulp could be easily detached fromthe inner surface of the pulp cavity, it was not without a 9 ceitain resistance, and when the edges of tlie co-adaptedpulp and tooth were examined by a strong lens, the fihi-mentar
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