Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . rotating teeth. It is made like a crib with the main wire following the line ofthe gum as before described, and the ends left free to act as a springon the labial and lingual surface of the tooth to be rotated, on whichis placed a band having slight depressions or sockets to receive ends of the springs are curved to proper form to cause pressurein the direction desired, and follow the line of the gums. The appliance is easily made, can be used for any tooth, and doesrapid work. In uniting the wires
Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . rotating teeth. It is made like a crib with the main wire following the line ofthe gum as before described, and the ends left free to act as a springon the labial and lingual surface of the tooth to be rotated, on whichis placed a band having slight depressions or sockets to receive ends of the springs are curved to proper form to cause pressurein the direction desired, and follow the line of the gums. The appliance is easily made, can be used for any tooth, and doesrapid work. In uniting the wires to form the crib, the joints are made morestrong, (which is especially necessary if using piano wire), by drawingthe temper of the end of the wire, and flatten with the hammer,making it very thin, (and again draw the temper) and bending itaround the main wire before soldering. If great strength is neededthe smallest copper wire should also be wound about the joint beforesoldering. It is always well to make the parts bright, and tin them beforeuniting, if soft solder is to be Fig. 9. The soldering can usually be done to advantage with the solderingiron, remembering to use, at all times, a very weak solution ofmuriate of zinc. Bands are indespensible in some cases for holding the ends of thespring in position on the teeth. They can be made with a lug projecting, for the ordinary case,or a socket or depression made in the band for rotating teeth. The latter is made usually by soldering to the band a loop ofsmall platinum wire in suitable position, to receive the ends of thespring. If the crib is not well retained with methods previously described,in some cases a separation should be made by wedging, to allow across wire to pass between the teeth to connect the sides of the a spring can extend from the crib, to clasp a tooth in the samemanner as for retaining a plate, or bands with slight ridges on theirsurface can be used as needed which I have previously described.
Size: 2210px × 1131px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidverha, booksubjectmedicine
