Specification of George Laurie : artificial teeth and gums.

  • Laurie, George.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Laurie : artificial teeth and gums. Source: Wellcome Collection.

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    Lauries Impts. in the Manufacture of Artificial Teeth and Gums. be performed, to be particularly described and ascertained in and by the following’statement thereof (that is to say): I construct my plates and arrange the teeth thereon in the usual manner. I rim my plates on the outer margin, and also within that portion of the plate which covers the alveolar ridge near the base of 5 the teeth to secure more effectually the compound and give strength and finish to the denture. After the teeth are properly arranged upon the plate and wax I cover them with a mixture of plaster of Paris, two parts; sand, one part; asbestos, one part; well mixed, and water added to make it of the proper consistence for covering the teeth in the usual 10 way. The teeth being thus covered, the wax is removed from the inside and the linings or fastenings arranged upon them ; they arc then soldered to the teeth with solder or pure gold; after which the plaster and asbestos covering is removed. I now place the denture in the mouth of the patient, and place wax or any other convenient substance on the 15 outside of the plate and teeth of sufficient thickness and proper form to bring out the muscles of the face to their original degree of rotunditv. From the wax or other model thus formed, upon which the muscles of the face rest, a metallic frame work is constructed corresponding; this frame or bulb is then soldered to the plate and united to the teeth by 20 covering it with the silicious compound with which I form my artificial continuous gums. The compound I prefer is prepared in the following manner :—Silex, four ounces; borax, two ounces; felspar, one ounce; kaolin clay, one ounce; asbestos, two drachms; caustic potash, two drachms ; mix these ingredients, reducing them to a fine powder, and 95 fuse in a crucible; pulverize this material, and add the same weight of pulverized Wedgewood, Parian marble, or porcelain tooth body; to every seven ounces of this mixture add one ounce of fine French clock shade or other glass; reduce the whole to an impalpable powder, and it will be ready for use. I mix the compound with sufficient water to bring 30 it to a plastic state, then insert it between and round the bases of the teeth, so as to form a continuous gum, and also upon the bulb or framework before mentioned, intermixing platina shreds, wire, or gauze to combine the toughness of the metal with the mineral. I also solder platina scraps, strips, shreds, or wire to the plate about the base 35
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