Licence: Public Domain Mark
Credit: A manual of dental anatomy : human and comparative / by Charles S. Tomes. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
45/614 (page 31)
![smaller, and breaks up into branches at a little distance beneath the surface of the dentine. Near to the pulp they are so closely packed that there is little room between them for the matrix, while near to the outside of the tooth they are more widely separated : their diameter is also greater near to the pulp caA'ity. Fig. 9 (M. The dentinal tubes do not pursue a perfectly straight course, but describe curves both on a larger and a smaller scale. The longer curves are less abrupt than the others, and are termed the primary curvatures ; they are often compared to the letter /, to wliich they bear a certain amount of resemblance ; the ])rimary curves are more l)ronounced in tlic crown than in the root. The secondary curvatures are very much more numerous and are smaller ; the actual course of the dentinal tube is, in most places at all events, an elongated spiral, as may he very well seen in thick sections transverse to the tiihes : (') Dcntiiio and ocniciitimi of the Narwal, slmwiiig contour lines due to rows of inter^'lobular sjiacos.](https://iiif.wellcomecollection.org/image/b21932025_0045.jp2/full/800%2C/0/default.jpg)
