Specification of William Edward Newton : setting artificial teeth.

  • Newton, William Edward.
Date:
1862
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Edward Newton : setting artificial teeth. Source: Wellcome Collection.

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    Newtons Improvement in Setting Artificial Teeth. This Invention of an improvement in setting artificial teeth consists in a certain mode of combining the teeth with a gold, platinum, or other metallic plate, by means of india-rubber or other vulcanizable gum, whereby all soldering and rivetting, by which the plate is liable to be warped, is dispensed 5 with. The metal is also prevented from oxidizing, and the gum, when vulcanized, is made to serve as a means of strengthening and preserving the form of the plate. The utility of the Invention is particularly enhanced inasmuch as any and all kinds of teeth can be employed. As a further means of strengthening and preserving the metallic plates, but which has more 10 particular reference to the application of the gummy or vulcanizable sub¬ stances, a series of bars are employed (as fully described herein-after) for the purpose of serving as a means whereby the gummy substances may receive additional strength and durability. Fig. 1 in the accompanying Drawing is a side view of an upper set of teeth 15 set according to the present Invention; Fig. 2 is an under side view of the same ; Fig. 3, a central section of the same from back to front; Fig. 4, a transverse section, as indicated by the line x in Fig. 2 ; and Fig. 5 is an under side view of an upper set of teeth with a series of bars, as represented by the dotted lines in Figs. 2. 20 In carrying out the Invention the impression of the mouth is first taken and the mould made and metal cast. The plate A to fit the mouth is thereby obtained in the manner commonly practised by dentists when the teeth are to be mounted on the plate in the usual manner, such plate, however, being made of much thinner metal than is required when the india-rubber is not 25 used. The rear edge of the plate is then turned forward over its face, as shewn in Figs. 2 and 3 at a, and the front and side edges b, 6, are also turned over, as shewn in Figs. 3 and 4, to make it hold the india-rubber c, c\ which is tinted of red color in the several Figures. When the plate A has been made the articulation is taken in the usual way and the teeth B, B, arranged upon 30 the plate, the teeth being formed with pins on hooks d to hold the india-rubber. Wax is then applied to the teeth and plate, where the india-rubber c, c\ is required of the thickness desired for the rubber. An impression in plaster of the back or uncovered surface of the plate A is then taken in one of the vulcanizing blocks, and when the plaster is set the surface of the portion 35 remaining around the outside of the plate is to be oiled, and while the plate remains in this flask the other flask is put on the top of it and filled with plaster, entirely covering the plate, teeth, and wax, the latter having been previously oiled to prevent the plaster from sticking to it. Having now