Removable artificial dentures / [Finis Ewing Roach].

  • Roach, Finis Ewing.
Date:
1905
Catalogue details

Licence: Public Domain Mark

Credit: Removable artificial dentures / [Finis Ewing Roach]. Source: Wellcome Collection.

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    N° 27,837 A.I). 1904 Date of Application, 20th Dec., 1004—Accepted, 26th Jan., 1905 COMPLETE SPECIFICATION. Removable Artificial Dentures I, Finis Ewing Roach, Dentist, of the Trade Building, Chicago, County of Cook, State of Illinois, United States of America, do hereby declare the nature of this invention and in what manner the same is to he performed, to ho particularly described and ascertained in and by the following statement; — 5 This invention relates to artificial dentures and more particularly to that class of artificial dentures, including partial plates, bridges, crowns and other structures, adapted to be secured or partly secured to the natural teeth or the roots thereof as the case may be. Heretofore, many attempts have been made to provide artificial dentures which, though firmly held in place, are capable of 10 being readily removed from the mouth for purposes of cleansing or repair. Such structures have usually been unsatisfactory, inasmuch as the same are usually connected rigidly with the abutment or anchor tooth, thus exerting constant strain upon the anchor tooth or teeth due to pressure in mastication. It has also been very difficult to install the same for the reason that such 15 mechanical structures are secured to the natural teeth or roots and heretofore it has been necessary to secure perfect alignment of said structures to enable the bridge or partial plate to be secured in place. The object of this invention is to provide removable artificial dentures of any and all kinds, adapted to be practically self adjusting in the mouth and afford¬ ed ing a very strong, though slightly yielding engagement with the abutments, and so connected therewith as to avoid entirely the necessity for arranging the fastenings therefor on the natural teeth or roots in alignment or in parallel relation, as has usually been the case. It is also an object of the invention to provide means whereby, though the abutments on each side of the artificial 25 denture may converge either inwardly or outwardly, a secure and positive support for the bridge or the like is obtained. It is a further object of the invention to provide means whereby the frictional engagement of the connection between the artificial and natural tooth may be varied at will, thus enabling any desired or necessary holding stress for the structure to be secured. The 30 invention embraces many novel details and consists in the matters hereinafter described and more fully pointed out and defined in the appended claims. In the drawings : Figure 1 is a perspective view of the partial plate and illustrates means for securing the same to the natural teeth. 35 Figure 2 is a fragmentary section taken on line 2—2 of the partial plate shown in Figure 1. Figure 3 is a longitudinal section of a bridge showing the same inserted between abutments, which converge outwardly. Figure 4 is a similar section illustrating a method of connecting a bridge 40 with a gold crown. Figure 5 is a longitudinal section illustrating a reversal of the construction as shown in Figures 1 to 4 inclusive. Figure 6 is an enlarged perspective view of a bridge supported upon two natural roots, showing the parts separated. Price S.f.J