Identifier: dentalcosmos3118whit (find matches)
Title: Dental cosmos
Year: 1889 (1880s)
Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, b. 1821 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, Lovick Pierce, 1877-
Subjects: Dentistry
Publisher: Philadelphia : S. S. White Dental Manufacturing Co
Contributing Library: The College of Physicians of Philadelphia Historical Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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608 THE DENTAL COSMOS. roots are about equally inclined away from the median line. Theanterior is noticeably thicker from buccal to lingual face, and blunterpointed, than the posterior. The longitudinal groovings are the sameas in the first molar. The tooth is placed in the jaw similarly to the first molar, so asto bring the crown in the line of the applied force. Plate O.—The Teeth in the Arches and in Occlusion. The teeth are so arranged in the jaws that the crowns do notocclude on a straight line. Both arches have a decided dip ordepression, the greatest dip being between the first and second Arrangement of the Teeth.Plate 0*
Text Appearing After Image:
The Superior and Inferior Teeth arranged in Opposition. bicuspids. In Plate O the teeth are arranged to show the labialand buccal aspects in the relations which they sustain to oneanother in the arches. The vertical and horizontal lines are for thepurpose of clear comparison. In occlusion the teeth of one jaw arenot in exact correspondence with those of the opposite jaw bearing * Copyright, 1889, by E. T. Starr. ir TYPICAL TOOTH-FORMS. 609 the same names. There is thus brought about an irregularity ofopposition like that called by bricklayers breaking joints, so thateach tooth, instead of being antagonized by a single tooth, is metby portions of the surfaces of two teeth. The shapes of all the superior teeth anterior to the second bicus-pids apparently incline their roots away from the median line ofthe arch, while the crown-faces are nearly vertical. In the secondbicuspid, just referred to as the limit of the downward dip of thearch, both root and crown are vertical. The superior mol

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