. Orthodontia, or malposition of the human teeth; its prevention and remedy . : [ PRACTICAL TREATMENT. 213 FERRULES OR RANDS. Ferrules or bands for encircling teeth and serving asmeans of attachment for operating or retaining appliancesmay be made from gold plate (IS to 22 karats fine), platinizedgold, iridio-platinum, platinum, platinized silver or Germansilver. All of those mentioned, except the last, will remainnearly free from oxidation, but German silver soon becomesdark in the mouth. As a rule, bands should be made tofit loosely so as to afford slight space for the cement which
. Orthodontia, or malposition of the human teeth; its prevention and remedy . : [ PRACTICAL TREATMENT. 213 FERRULES OR RANDS. Ferrules or bands for encircling teeth and serving asmeans of attachment for operating or retaining appliancesmay be made from gold plate (IS to 22 karats fine), platinizedgold, iridio-platinum, platinum, platinized silver or Germansilver. All of those mentioned, except the last, will remainnearly free from oxidation, but German silver soon becomesdark in the mouth. As a rule, bands should be made tofit loosely so as to afford slight space for the cement whichis to hold tliem in position, and where practicable, the toothto be fitted should be freed from contact with its neighborsby previous wedging. As this cannot always be done, thebands in some cases will have to be forced over the teeth inspite of tlieir contact. In such event they should be con-structed from the stifFest and least yielding of the metalsmentioned, such as platinized gold, platinized silver, oriridio-platinum. Bands made from these metals, eventhough thin, will retain thei
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidorthodontiaormal00guil
