US1298419A - Artificial tooth. - Google Patents

Description

C. E. SUMMY.

ARTIFICIAL TOOTH.

APPLICATION FILED MAR. 23. I918- ].,298,41 9. Patented Mar. 25,1919.

INVENTOR 'arks ESQ/2222125 WITNESSES v ATTORN EY UNITED STATES PATENT OFFICE.

CHARLES E. SUMMY, OF PRIMGHAR, IOWA.

' ARTIFICIAL TOOTH.

Specification of Letters Patent. Patented Mar, 25, 1919.

Application filed March 28, 1918. Serial No. 224,204.

dentistry and has for an object to provide new and improved artificial teeth of the type mounted on a plate wherein the teeth may be interchanged or replaced without the necessity of revulcam'zing or otherwise afiecting the plate or the mounting of the remaining teeth, teeth to be replaced by mere attachment to the anchoring plate without the necessity of altering the structure of the plate, or disturbing the relation of the remaining teeth. I

In addition to the foregoing my invention comprehends improvements in the details of construction and arrangement of the correlative parts to be hereinafter more fully described and particularly set forth in the appended claims.

In the accompanying drawings in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they appear Figure 1, is a view in side elevation of an anterior tooth mounted upon an anchoring plate of my invention.

Fig. 2, is a view of the tooth of the preceding figure in section together with the anchoring plate and the vulcanite plate in section to illustrate the correlation of the parts.

Fig. 3, is a View of an anterior tooth in front elevation including the plates.

Fig. 4, is a view in side elevation of a bicuspid and plate.

Fig. 5, is a view of a bicuspid and plate 1n section.

Fig. 6, is a view of the bicuspid and plate in front elevation.

Fig. 7, is a View in side elevation of a posterior tooth and plate.

Fig. 8, is a view of the tooth of the immediately preceding figure in section including the plate illustrating the manner 1n which the tooth is mounted thereon.

Fig. 9, is a view of the posterior tooth in front elevation including the plate, and

Fig. 10, is a view in bottom plan of one of the anchoring plates.

With reference to Figs. 1, 2 and 3 of the drawings, 10 indicates an interior tooth having a recess 11 formed in its under side. My invention includes an anchoring plate indicated at 12 which is curved longitudinally as shown and is provided upon its upper surface with a rearwardly deflected stud 13 designed to enter the recess 11 of the tooth. The surface of the stud is preferably corrugated or formed with threads so 'as to insure a firm anchorage of the stud in the cement used to secure the tooth in place. The plate 12 is formed adjacent the forward end with a transversely extending aperture 1 1, and'its under side is formed with a lurality of sockets or depressions 15. he vulcanite plate indicated at 16 is formed on its upper surface adjacent the periphery in a manner to permit the embedding of the anchoring plate 12 therein in suitable relation to receive the teeth, whereby the teeth may be disposed'in regular order when secured to the plate. It will be noted that the material of the vulcanite plate may enter the aperture 14 as wellv as the de ressions 15 to insure the firm anchoring of the anchoring plate to the vulcanite plate so as to permanently bind the two together. It is to be noted that the stud 13 is to be located adjacent and beyond the Vertical center of the tooth so as to be in a position to receive the cement uniformly and to rigidly hold the tooth against movement.

It will be apparent that owing to this construction the tooth 10 when broken may be easily replaced by another without disturbing the anchoring plate 12 and hence without disturbing the order or arrangement of the remaining teeth or without requiring the revulcanization of the vulcanite plate.

With reference to Figs. 4, 5 and 6 of the drawings, 17 indicates a bicuspid, the anchoring plate for which is indicated at 18. This anchoring plate is provided with a stud 19' upon its upper surface of slightly broader dimensions in order to sustain the added strain placed thereupon and the forward end ofthe plate 18 is formed with a depending lip 19 apertured transversely at 20. This plate is embedded in the vulcanite plate in the manner of the anchoring plate described above and hence the manner in which this be obvious. M 7

In Figs. 7, 8 and 9 of the drawings, a

posterior tooth has been indicated"at-21.'

5 ing plate; having an upstandingstud enter- The anchoring plate 22 therefor is thicker and heavier than the platesprevioilslj def scribed and provided with a stout stud2 4 upon its upperserrate-to enter a relatively large recess in the undersideof the tooth.

The plate 22 is otherwise"eohstructedfln manner identical wit-h the plates previously described:

pensfe anaemia the replacem nt pi damaged: teeth 'vvillbenoininali The anchoring plates may be ffoiined of platinum or-a cheaper frn'et'al siic'h asa'luminuin, "or any The us s and advantages of i this 7 type Poi art to which this invention appertainis. H

ters Patent is p p "1; A tooth'havinlg a recess, and an anchoring said recess, the lower face of the plate being provided with depressions; combined with a vu-lcanite plate into which said anohoringplate is embedded. '2. The'conmbin'ation'" of a vulcanizing plate, an anchoring plate embedded therein -vits medium around said stud.

' in presence of two witnesses?" In testimony whereof Iaifii:

type of tooth is niounted should- 7 Having thn s described invention what 25 I'claim as newan'd desireto"seeurebyLetp I lower face having depressions and "it's' 'bofdy" me im each, by ad ressingithe commissi nef 6r rateiit sg

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