Specification of Nicholas Dubois de Chemant : artifical teeth.

  • Nicolas Dubois de Chémant
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Nicholas Dubois de Chemant : artifical teeth. Source: Wellcome Collection.

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    JDe Chemanfs Composition for Making AHificial Teeth, <^c. NOW KNOW YE, that in compliance with the said proviso, I, the said Nicholas Dubois de Chemant, do hereby declare that my said Invention is described in manner following, that is to say:— To make the mineral paste or composition of which the teeth are to be formed: Take thirty pounds of fine white sand, like that of Fontainbleau or ^ Aumont, wash it well three or four times until the water runs off very clear; dry the sand; then take ten pounds of Alicant barilla, pounded, and sifted thro’ a coarse sieve; mix both ingredients well together, and place them under an oven or furnace (similar to that in which the tender or soft French porcelaine or china is baked,) till they are properly purified; take seven pounds 10 of this composition, pound and sift it, then mix with it two pounds of the whitest and cleanest well dried marie, moisten it in very clear water, and grind it in a mill (such as mustard grinders make use of) until it becomes very fine; then take it out and place it on plates of plaister to dry, and the paste is compleat. 15 To make other pastes, but of a quality inferior to the above: Take about half an ounce of English earth, such as earthenware is made of; add to it six grains of earth of Dombes, calcined, three grains of Naples yellow, and one dram of Prussian blue; mix the whole together, as above, beginning with the blue, then the yellow, &c^. Or take half an ounce of caholin of Limoges, 20 thirty-six grains of saffron of Mars, thirty-six grains of Naples yellow, one dram of Prussian blue; mix the whole together as before. Or take half an ounce of the dust of French porcelaine, six grains of saffron of Mars, six grains of earth of Dombes, calcined, six grains of Naples yellow, one dram of blue, made of cobolt; mix and pound the whole as before. These pastes 25 (the first excepted) have their colour in their formation, but in order to give a colour to the pastes first described, take four pounds and a quarter of it, to which add one quarter of a pound of saffron of Mars and one grain of Prussian blue, finely pounded; mix them well together. Or take twenty-four ounces of the same paste, one ounce of saffron of Mars, one grain of Prussian blue; 30 pound and mix them as before. Or, to thirty ounces of the same paste, add one ounce of saffron of Mars, one grain of Prussian blue; pound and mix them as before. Any of these compositions for different colours, according to the particular shade required, are to be mixed and worked up with this paste at the time of its being made. 35 To make the teeth so as accurately to supply and fit the interval in the gums: Take a quantity of softened wax and place it in the mouth, which being then shut will give the exact impression of the cavity required to be filled up ; in this wax is poured a composition formed of plaister of Paris, such