The Angle system of regulation and retention of the teeth, and treatment of fractures of the maxillae / by Edward H. Angle.

  • Angle, Edward H. (Edward Hartley), 1855-1930.
Date:
[1897], ©1897
Catalogue details

Licence: Public Domain Mark

Credit: The Angle system of regulation and retention of the teeth, and treatment of fractures of the maxillae / by Edward H. Angle. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    various attachments by solder shown in Figs. 20 and 21 are made in this way. In such attachments as E, F, H, and K, Fig. 20, the pieces of solder may be kept from flying off by gently holding them in position between the pieces to be united. But where the ends of small tubes are to be secured as in C and D, it is best to first use the solder upon the band, and then hold the small tubes by means of the soldering pliers in contact with the solder and again apply heat, otherwise the solder will be drawn into the tube. The solder best adapted in uniting the different parts of these appliances is the ordinary jeweler's silver solder, although any of the gold solders work equally as well. Plenty of borax should Fig. 10. always be used as a flux. Never use more solder than is necessary, especially in attaching the small tubes; use just sufficient to make the union. Always avoid overheating; just enough heat from a small flame to thoroughly fuse the solder is all that should ever be employed. In every instance, avoid heating the screws or nuts. This is to be especially observed with the jack and traction-screws, as great care is observed in their manufacture to produce the greatest stiffness and strength, and this fine temper is ruined by heating. The wire arches B and E are also manufactured in such a way as to give to them the greatest possible spring, second only to steel. They must not be heated, or this delicate temper will be destroyed. The three delicate sheaths found on the wire arch B, Set No. 2, are attached by means of soft solder. Should one of them become loosened it may be resoldered, using the soft solder and a drop of muriatic acid, and applying a fine flame, carrying the heat to only just the point sufficient to fuse the solder. Where two or more bands are to be united in order to retain the