Vulcanite and celluloid : instructions in their practical working for dental purposes / by S. Eldred Gilbert.

  • Gilbert, S. Eldred.
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: Vulcanite and celluloid : instructions in their practical working for dental purposes / by S. Eldred Gilbert. Source: Wellcome Collection.

Provider: This material has been provided by the University of Toronto, Harry A Abbott Dentistry Library, through the Medical Heritage Library. The original may be consulted at the Harry A Abbott Dentistry Library, University of Toronto.

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    VULCANITE. Vulcanite is the result of the combination of caoutchouc (India-rubber) with sulphur through the agency of high temperature. The earliest information on this subject is found in the specification of Charles Goodyear, in 1844, for producing indurated rubber. His mixture consisted of caoutchouc, sulphur, and white lead. In 1855 he ob- tained a patent for the use of vulcanite as a base for arti- ficial dentures. The coloring matter used in red vulcanite is vermilion. Black vulcanite has no coloring, but consists of caoutchouc and sulphur, and this product, being nearly pure rubber, shrinks more than the colored vulcanite. Impressions of the AIouth. The mouth being in a proper condition, the initial step towards the construction of an artificial denture is the taking of an impression. One of four materials may be used for this purpose,—namely, gutta-percha, wax or^ a combination of wax and plaster, modelling composition, and plaster of Paris. Gutta-percha.—Gutta-per<jha is softened in hot water and placed in the im^iPessioMcup^ theoi inserted into the mouth, and gently crowded into position, the cheeks and lips being pressed against it while so held,'thus causing