US1158732A - Artificial-tooth anchor. - Google Patents

Description

I Patented Nov. 2,' 1915.

W. F. SHAW.

4 TQE WILLIAM F. siriew, OF PUEBLO, COLOBADO.

ARTIFICIAL-TOOTH ANCHOR.

Specification of Letters Patent.

mema Nov. 2, 1915.

Application filed March 24, 1915. Serial No. 16,659.

To all 'whom it may conccm i Be it known that I, WILLIAM F. SHAW, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented a new and useful Artificial-Tooth Anchor, of which the *following is a .specification. v O

The present invention appertans to dental bridge-work, and aims to provide a novel and improved device for anchoring an artficial tooth or bridge to a natural tooth.

It is the object of the invention to provide an anchor for dental bridge-work or an artificial tooth which will not require the eX- cessive grinding away of the natural tooth, which will be invisible so as not'to cover or encumber the natural tooth, which can be securely fastened to the natural tooth, and which will be both simple and inexpensive in Construction, and simple, practical and efficient in its application to the natural tooth.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of Construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departin from the spirit' of the invention.

[he invention is illustrated in its preferred embodiment in the accompanying drawing, whereinz- Figure l is a perspective view of the improved anchor. F ig. 2 is a sectional View of a ,pair of teeth illustratng the device employed for anchoring an artificial tooth toa natural tooth. Fig. 3 is a plan View illustrating a pair ot' the anchors employed for supporting a bridge for a plurality of artificial teeth arranged between a pair of natural teeth. i

In carrying out the invention, the anchor is formed from a plate or strip of gold or other sheet metal, the plate or strip being doubled to provide a two-ply web 2, having a loop 3 at one end, and the angularly eX- tending or bent portions 4 at its other end. The loop 3 constitutes the intermediate portion of the plate or strip, and the portions 4 constitute the end portions of the plate. The portions 4 are flush, and provide an abutment to which an artificial tooth or bridge may be cemented or otherwise -seg cured. The loop or member 3 is relatively short, and the web 2 preferably increases in width from the loop 3 to. the abutment portons 4, and the portions 4 preferably project beyond the web 2.

The anchor embodies `a second element which is in the form of a pin or post 5 havingone end secured within the loop 3, and having its other end pointed, if desired, and projecting from the loop 3 in the same direction that the abutment portions 4 project from the web 2. The pin or post 5 may be welded, soldered or otherwise Secured within the loop 3. l

In applyng the anchor to a natural tooth, reference being had to Fig. 2, the natural tooth' 7 is provided with an approxmately central bore 6 for the reception of the pin or standard 5 and loop 3, and a slot 8 is cut or formed in the tooth between the bore 6 and one side of the tooth. The bore 6 and slot 8 are properly formed for receiving the pin 5 and web 2, respectively, whereby the anchor will be embedded firmly within the natural tooth, with the abutment portions 4 resting snugly against the respective side of the tooth. The web 2 in fittng within the slot or kerf and the pin 5 or loop or portion 3 fittng within the bore 6, will securely fasten the anchor within the natural tooth, and the anchor may be cemented or otherwise Secured within the tooth to prevent the anchor from slipping out of engagement with the tooth. The artificial tooth 9 which lies at one side of the natural tooth 7 is soldered, cemented or otherwise fastened to the abutment portions 4, so that the artificial tooth will be carried firnly by the natural tooth.

A pair of the anchors may be enployed, as illustrated in Fig. 3, for supporting a bridge, each of the two anchors being applied to the respective natural tooth 7' in the manner that the single anchor is applied to the natural tooth 7 as above described. The teeth 7' are provided with bores 6' for receivng the pins 5 and loops 3 of the two anchors, and the said teeth are also provided with slots 8' for receiving the webs 2. The bridge 10' is firmly soldered or otherwise secured to the abutment portions 4, and the artificial teeth 9' are fastened in any suitable manner to the bridge 10' to be supported between the natural teeth 7'. In this use of the anchors, the abutnent portions 4 as well as the bridge will lie at the lingual sides of the teeth, so that neither the anchors or bridge will be exposed to View. In the use of the anchor as illustrated in Fig. 2, the abutment portions 4: will lie between the two teeth, and thus be concealed from View.

The present anchor is of advantge for numerous reasons, which will he obvous ,away of the teeth upon the eXterior thereof,

which is objectionable. The crowns are also objectionable since they are exposedto View, Whereas in the present case, the anchorsor attaching members are hidden from View so that the teeth will be unencumbered at their forward or oute' sides. The present anchor s snple and nexpensve n con- Copies of this patent may be obtained for struction, but at 'the same time, is thoroughly practical and efficient in use. The anchors may be quickly and easily appled to the teeth, and without great cost, or rather, with a minimum eXpense.

Having thus described the invention what* is claimed as new isz A dental anchorcomprising a web edapt ed to fit in a slot in a tooth and having an abutment portion, at one end, and a pin' attached to the other end of the web and projecting from the web to' fit within a bore in the toothg y I In testmony that 'I claim the foregoing asmy own; I'have hereto affixed my signa tu'e in the presence of two witnesses.

` WILLIAM F. SHAW.

Witnesses: i 4

NEWELL A. Gossn'r'r, 'BEULAH K. SHAW. v

five cents each, by addressingthe Commissioner of Patents, W'ashigton,` I). C. v i ,V

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