Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 edition. Excerpt: ... EXPLANATION OF THE PLATES. PLATE I. Fig. 1. (Magnified three diameters.) Longitudinal section of a carious bicuspid. The section is slightly slanted across a large carious cavity; upon the left side of the crown a cone of a dark color is seen in the dentine altered by caries; this cone extends in the direction of the dentinal canals from the surface even to the pulp-cavity, and presents a radiated striation which corresponds to these canals. Upon the surface of the section the loss of substance extends only upon the enamel, whilst upon the neighboring parts it penetrates deeply into the interior of the dentine. Upon the masticating surface of the enamel are seen two fissures. Pio. 2. (Magnified three diameters.) A longitudinal section of a canine tooth with commencing caries. In the centre of the crown is a small carious point in a depression of the enamel; the caries has not as yet attacked more than a superficial layer of the enamel. A similar point exists at the left side of the crown, .also without loss of substance, and it is from this point that the caries has extended across the whole thickness of the enamel, and nearly across the whole thickness of the dentine to the neighborhood of the pulp-cavity. The outermost layers of the dentine are of a darker color than the deepest layers of the enamel, the color diminishing in both from the surface inwards. There are, moreover, three small carious cavities which reach to the surface of the dentine; also cones of carious dentine are seen to start from these cavities and point to the pulp-cavity; one of these cavities exists at the right side of the crown, the two others are found at the neck of the tooth. Flo. 3. (Magnified three diameters.) Section of a human molar with caries commencing...
