File:The Dental cosmos (1914) (14581401988).jpg

Identifier: dentalcosmos5619whit (find matches)
Title: The Dental cosmos
Year: 1914 (1910s)
Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, 1821-1895 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, L. Pierce (Lovick Pierce), b. 1877
Subjects: Dentistry Dentistry
Publisher: Philadelphia, S. S. White Dental Manufacturing Co
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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Text Appearing Before Image:
directly backward, when the head isnaturally poised, passing at right anglesthrough line a and past the said linethree-eighths of an inch. This line isindicated in Fig. ?, b. As we will referto this very important point, the centerof oscillation, later, we deem it advisableto make its location very clear to themind of the reader. A line (c) drawn downward and hack-ward, at an angle of 60° from line b,through the condyle, indicated by thewhite cross, will merge into the centerof oscillation. And a line (d) drawnfrom the center of oscillation downwardand forward, at an angle of 00° fromline b, will intersect the point where linea crosses the occlusal plane (e). Thesetwo lines, c and d, form two sides of aperfect hexagon. The angle of thishexagon, opposite that shown at the Fig. 9.
Text Appearing After Image:
To further locate the center of oscil- center of oscillation, strikes exactly thelation, a line may be drawn, beginning lowest point of the ala of the nose,just beneath the ala of the nose, running Another line that enters as an im- 2U THE DENTAL COSMOS. portant factor into anatomical articu-lation is the predeterminate dental line(f). so called because this line predeter-mines the position of the occlusal plane(e), which is parallel with this prede-terminate dental line. In a widelycirculated article upon anatomical ar-ticulation, we read—That step is, todraw on the patients face by the aid ofa ruler, a line from the lowest point of Fig. 10.

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