File:Headgear;The Dental cosmos (1890).jpg

Identifier: dentalcosmos3218whit (find matches)
Title: The Dental cosmos
Year: 1890 (1890s)
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:
tracted. Wire posts were soldered to the main wire, and curved insuitable form to allow room for the action of the lower lip and to enterthe tubes in the chin appliance at the proper angle. Two Germansilver wires were pivoted to the lower part of the chin apparatus, withthe ends projecting upward and backward sufficiently far and diverginguntil they were about one and one-half inches apart. The ends werethen bent at sharp angles and united with solder. A metal button CORRECTING IRREGULARITIES OF THE TEETH. 88l was soldered to each of these angles for the attachment of rubber bands,to exert the traction on the appliance. It is obvious that properlydirected traction on the chin-piece would force the crib backward,carrying all the inclosed lower incisors, cuspids, and bicuspids towardthe second molars, which were finally almost touched by the bicuspids.It will be noticed that the arch of the inferior oral teeth was maintained Fig. 13.
Text Appearing After Image:
by the crib while in transit, and that the molars were in nowise dis-turbed. There is great advantage in having the wire portion pivotedto the appliance, as it acts like a whiffletree, and thus the appliance isnot drawn sideways at each change of the tension. The part passingover the head was made of strong cord net-work, with a border ofsilk ribbon about one inch wide, to which were attached two non-elastic suspenders with buckles on either side. The buckles were 882 THE DENTAL COSMOS. provided with wire hooks, which were concealed by a flat piece ofmetal to receive the rubber bands. The resulting improvement in the relations of the teeth is shown Fig. 14.

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