US1382830A - Form of artificial tooth and means or method of anchoring same into position in the mouth - Google Patents

Description

E. A. HAGAIVIAN.

FORM OF ARTIFICIAL TOOTH AND MEANS OR METHOD OF ANCHORING SAME INTO POSITION IN THE MOUTH.

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FORM OF ARTIFICIAL TOOTH AND MEANS QB) METHOD OF @LN'GHORING fiAME INTO POSITION IN THE MOUTH.

Specification of Letters Patent.

Application filed November 21, 1919. Serial No. 339,612.

To all whom it may conceive:

Be it known that I, EDWIN A. HneAMAN, a citizen of the United States, residmg at Madelia, in the county of Watonwan and State of Minnrnota, have invented certain new and useful improvements in Forms of Artificial Teeth and Means or Methods of Anchoring Same into Position in the Mouth, of which the following is a specification.

This invention relates to artificial teeth, and the primary object of the invention is the provision of an improved porcela n tooth and means for anchorlng the same in position in the mouth.

Another object of the invention is the provision of an all porcelain tooth for bridge work which will eliminate the contacting of cold or other metals with the tissues of the mouth, thereby keeping the mouth and teeth in a clean and sanitar condition. p

A further object 0 the invention is the provision of an improved means for anchoring artificial teeth used in bridge work which will eliminate the display of, gold and permit the ready replacement of a tooth when the same becomes broken or cracked.

A still further object of the invention is the provision of improved bridge workfor dentistry which will be durable and efficient in use, easy and simple to manufacture, and which can be constructed at a minimum cost.

@ther objects of the invention will appear in the following detailed description taken in connection with the accompanyin drawings forming a part of this speci cation, and in which drawings:

Figure 1 is a verticallon 'tudinal section through an incisor tooth s owing the anchoring means in position.

Fig. 2 is an inside view of one of the artificial teeth ready to receive the anchoring means. a a

Fig. 3 is a detail transverse horizontal section taken on the line 3-3 of Fig. 1, and

Fig. 4 is. an elevation showing an inside view of the bridge work supporting four lower incisor teeth and showing the same connected to the supporting teeth, which are shown in section.

Fig. 5 is a vertical longitudinal section through a bicuspid tooth showing the anchoring means attached thereto.

Referring to the drawings, in detail, wherein similar reference characters indicate corresponding parts throughout the several views, the letter A indicates an arti-- ficial tooth, B the anchor therefor, C the connecting backing, and D the inlay carried by the natural teeth E.

The artificial teeth A are constructed of I an all porcelain body 5 and the same are to be made in any size, shape or shade, so that the same may match the adjoining natural teeth with which they are to be connected.

The inner face of the body 5 of each tooth A is provided with an inwardl extending and upwardly inclined rectangulh socket 6, which is adapted to receivethe anchor B which will be hereinafter more fully described. Around the outer ed es of the walls of the sockets 6, the inner ace of the body 5 is provided with a concaved depres- $1011 7, for a purpose which will hereinafter more fully ap ear.-

The anchor includes a flat substantially rectangular plate 8 formed of a strong metal, and the same has the upper and lower edges thereof notched or serrated as at 9.

A binding cement 10 of the ordinary or any preferred type used in binding is placed in the socket 6, when the plate 8 is to be placed in position, and the cement engages in the recemes 9 in the plate 8 and around the walls of the sockets, which normally holds the plate in the socket against accidental displacement. The forward end of the plate 8 protrudes slightly beyond the inner face of the body 5 of the tooth A and has secured thereto a relatively thin plate 11, which is formed of gold, platinum, or the like, and is fitted over the concaved de ression formed in the outer face of the Body 5 and forms the backing G. The plate 8 is first placed in the deep slot or socket 6 after the tooth has been ound over and fitted in its place in the bridge model (not shown) and the thin gold plate 11 is forced over the projecting end of the plate 8 which cuts through the same. The'end of the plate is then burnished or swa ed in place. The plates 8 and 11 are t en removed from the porcelain tooth and soldered together. When the required number of teeth are fitted in place, and "the backing consisting of the plates 8 and 11 made in this way, the several backings are waxed together and invested in fine clay or other investing material, and the same are soldered to ether. The solder is rounded so as to fully concaved depression 7 in the porcelain tooth 5 as at 12. This concavity provides for a supporting frame work near the center of Patented June 28, 192 1 11 the the tooth so that'the same can stand the forcefthat is directed against the porcelain tooth in the act of mastication and form 1 a smooth appearance so as to eliminate a bulky projection on theinner surface of the tooth.

The metal backings of the teeth may be made by casting instead of soldering. In.

this. method the wax is forced against the plate 8 while in position in the tooth and the .wax carved to proper shape and contour.

After theporcelain teeth have been ground to proper length and size, the same may be given a final glossy finish by baking inv an electric oven, and the same are then cemented in position on their backing. The finishedteeth may then be cemented in place in-the mouth. v

The plate 11 is formed relatively small so that the same cannot be seen by an observer and prevent the same from engaging the tissues of the mouth.

As shown in Fig. 4 of the drawings, the bridge work is shown supporting the lower incisor teeth and the outer teeth having their gold inla backings soldered or otherwise securedto s 16 carried by the natural teeth E.

be gol inlays D may be of any size or shape to conform to the configuration of a tooth and as shown include the outer faces 15 and anchoring members 16. Crowns instead of inlays may be used for attachment to natural teeth when found desirable;

In Fig. 5 is illustrated a bicuspid tooth,

'- and the same is anchored in position in-the same manner as described above.

The different portions of the device may be assembled and made to conform to the exact confi ration of the missing teeth in the mouth y any other means well known and employedin the dentistry art.

From the foregoin description it' can be seen that an improve means is provided for anchorin artificial teeth in the month which will eliminate the usual delicate and costly work involved, and which is so constructed that the gold or other metal will not be visible, and which will permit a-solid porcelain tooth to be used.

When more than one artificial tooth is to be supplied, the same may be fused or secured together so as to eliminate crevices between the teeth and thus prevent food or the like from lodging and collecting between the same.

Changes in details may be made without departin from the spirit or scope of my invention, ut;

I claim: 4

1. An artificial tooth including a solid body, a' longitudinally extending plate anchored in said body, and an attaching plate carried by the outer end of the first mentioned plate having a less length and width than the length and width of the solid body of the tooth.

2. An artificial tooth including a solid body having an inwardly extending recess formed inits inner face, a late secured in said recess, an outer plate disposed substantially at the transverse center .of the body and having a width less than the hei ht of the body secured to the first mentione .plate and arranged to overlie the recess and means for securing the last mentioned plate to natural teeth.

' 3. An artificial tooth includin a solid porcelain body having an inward y extendng recess formed therein, an anchor plate extending longitudinally of the tooth and fitted in said recess,'the up er and lower edges of the plate being notc ed, a binding section in said recess, the outer face of the tooth havin an arcuate depression therein communicating with said recess, an attaching plate pressed over the anchor plate and solder carried by said plate and rounded and fitted in said concaved depression.

4. Anartificial tooth including a solid porcelain body having an inwardly inclined recess formed in its inner face terminating short of the upper and lower edges thereof, a flat rectangular plate fitted in said recess, said recess being positioned intermediate the ends, and side faces ofthe body, and an attaching plate carried by the outer end of the plate. y

5. In a bridge work structure, a plurality of artificial teeth having inwardly extending recesses formed in the inner faces thereof intermediate their ends and side faces, anchoredplates fitted in said. recesses and extending .beyond the outer face thereof, an outer plate secured to the outer end of each anchor plate, the ends of the outer plates being soldered together.

metallic inlays carried by the natural teeth.

. EDWIN A. HAGAMAN.

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