This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ...Such a formation is shown in Figure 84. The tearing action of the bicuspids on fibres is made possible by the formation of the occlusal surfaces and the peculiar open and shut form of articulation, which will be more fully considered later. The cuspids come into contact first during articulation, and the molars come ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ...Such a formation is shown in Figure 84. The tearing action of the bicuspids on fibres is made possible by the formation of the occlusal surfaces and the peculiar open and shut form of articulation, which will be more fully considered later. The cuspids come into contact first during articulation, and the molars come into contact before the lingual cusps of the bicuspids do, and hold fibres firmly at both ends, while the bicuspids, with their open and shut articulation, stretch the fibres, tear one from another, and pierce between and separate them. This tearing action is diagrammatically illustrated in Figure 85. Trubyte bicuspids have been designed with a knowledge of these functions and so shaped as to discharge them with the exercise of slight force. So far as I know, they are the first bicuspids which have ever been designed with any intelligent understanding of tbe functions they must perform. 80-Similar cracking action by human bi The bone cracking teeth of the dog. cuspids. Diagrammatic representation of a grain Mg. 84. trap. Same trap in Trubyte bicuspids. Buccal cusps interdigitate in articulation. The functions of the molars are to hold the posterior ends of fibers which are being torn by the bicuspids, to cut the torn fibers into short pieces, and to roll fibers in such way as to isolate individual cells and smash the cell walls to permit insalivation. The importance of this smashing power is seen when it is understood that starches which have not been insalivated are not digested. Artificial molars are enabled to discharge these functions by a smooth sliding articulation, which, in its form of greatest efficiency, opposes a number of small, relatively sharp facets in such way that they interact to produce the required effect. The efficiency of t...
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Seller's Description:
Scarce. Boards rubbed at edges and corners with signs of overall shelf wear around spine. Otherwise a clean, tight hardcover book in good condition. Burgundy cloth boards with gilt lettering. 251p. A guide to taking dental impressions and making dentures. Covers the Greene-Supplee method and the work of doctors J. Leon Williams and Professor Gysi. Photographs and illustrations demonstrating methods.
