Specification of Urial King Mayo : artificial teeth and plates.

  • Mayo, Urial King.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Urial King Mayo : artificial teeth and plates. Source: Wellcome Collection.

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    Mayors Improvements in the l^reparation of Artificial Teeth, great pressure in a mould of the proper shape and having a hulk about four times what the article is to have when dry; next it is to be removed from the preparatory mould and placed in a drying mould, or successively in a series of such similar in form though varying in size, the object being to cause it to retain its ’^general form while shrinking ; 5 finally, when nearly dry the blank so moulded and shrunk is to be put into a finishing die or dies and pressed therein so as to consolidate it and bring it to the necessary shape Vhich it is to have as a base plate; next the base plate should be exposed to the atmosphere or to heat so as to thoroughly [dry it; the article will then be fit for use. In 10 preparing a tooth or a block of teeth for being fixed to such a base plate, I cover the spurs or pins c of such tooth or block A (see Figures 1, 2, and 3) with a mass of the plastic material herein-before described, and dry it on and around the same, especially about the necks of the pins, so as to form thereon when it is dry what I term a ‘‘ backing ” shrunk 15 firmly on and about the pin or pins. It will be observed that what I term the base plate is to have, first, the necessary approximate shape to fit to the superior or inferior alveolar ridge of either the upper or lower jaw, the fitting it to the ^ ridge being a subsequent matter and effected as follows This is to be done by cutting 20 or reducing it by tools to a closer fit, and finally dusting upon the surface a quantity of the material in a comminuted or powdered state, and pouring upon the quantity so dusted on a sufficient quantity of ether or other suitable solvent so as to reduce it to a plastic state; in this condition the plate is to be pressed upon the plaster cast or counter- 25 part of the jaw or the portion thereof to be fitted, and there firmly held by means of elastic ^clasps or a press until sufficiently dry or set; next the tooth or blocks of teeth prepared with a backing or backings as herein-before explained is or are to be fixed to the base plate, they first being articulated in a manner well known to dentists. Having thus 30 been properly arranged on the base each tooth or block is to be fastened in place thereon by putting or filling into the joints and about the backing a small amount of the powdered material and next applying thereto ether or other proper solvent so as to reduce the mass to a cementing state, whereby when dry it will effect the adhesion of the 35 teeth to the base plate. That part of the base plate which is to fit to the alveolar arch may be in a piece separate from the portion to fit to the alveolar ridge, and be cemented thereto by means of the powdered