US375167A

US375167A - Filling teeth

Info

Publication number: US375167A
Authority: US
Publication date: 1887-12-20
Anticipated expiration: 1904-12-20

Description

(No Model.) a 0'. H. LAND.

. FILLING TEETH. No} 375,167. Patented Dec. 20, 1887.

WITNESSES 1% j Ww. W

.dttorney UNITED STATES PATENT OFFICE.

CHARLES H. LAND, OF DETROIT, MICHIGAN.

FlLLlNG TEETH.

SPECIFICATION forming part of Letters Patent No. 375,167, dated December 20, 1887.

Application filed June 20, 1887. Serial No. 241,899. (No model.)

To aZZ whom, it may concern:

Be it known that 1, CHARLES H. LAND, of Detroit, county of WVayne, State of Michigan, have inventeda new and useful Improvement in Filling Teeth; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a process for filling decayed teeth and restoring the same to their normal shape, size, and color, and to certain novel devices for accomplishing the same, as more fully hereinafter set forth, and more particularly pointed out in the claims.

In the .drawings, Figure 1 represents a tooth having a cavity therein ready for filling. Figs. 2 and 3 represent different views of amatrix fitted to the cavity. Fig. 4. is a view of a filling fitted to said matrix. Fig. 5 illustrates the complete filling applied in the cavity of the tooth. Fig. 6 represents a modification illustrating a common form of cavity in a tooth. Fig. 7 represents a modification of the metallic plate being formed into a mold; Fig. 8, a filling fitted thereto. Fig. 9 represents the filling applied to the cavity of the tooth illustrated in Fig. 6. Fig. 10 shows a modification of my invention. Fig. 11 is a sectional view showing the cavity partially filled with a soft filling, the matrix and section covering the same.

The object of my invention is, first, to provide a means for molding vitreous or other suitable substance of indestructible nature into sections corresponding to the exact form of the lost portions of decayed teeth; second, to provide for this purpose a thin metallic ma trix by swaging or burnishing suitable metal into the cavity of the tooth when properly excavated, whereby a perfect impression of said cavity is secured; third, to produce, with this matrix as a mold,asolid section or plug of any desired material, which will correspond to the exact shape of the cavity in the natural tooth; fourth, to secure in said cavity the said section or plug by means of suitable cements; fifth,

to properly shape a plug or section by a matrix as a mold, and to subsequently secure the plug or section in the cavity without the intervening matrix; sixth, to employ the mold or matrix as a support; the plug being secured thereto and both secured in the cavity of the tooth; seventh, the construction of matrices of various forms as articles of manufacture; eighth, to produce a partial fillingof the cavity with a soft filling, the matrix covering the same and terminating at and defining the outer edges of the cavity; ninth, to provide the matrix with pins to engage in the soft filling on the one side and with the material of the plug or section upon the other, if desired.

In the drawings, A represents a tooth; A, a cavity excavated therein ready for filling.

A represents a metallic matrix formed by swaging or burnishing a thin metallic substance into the cavity, so as to securea perfect impression thereof. In forming this matrix I prefer to employ platinum, although gold or silver or other material may be employed, if preferred, without departing from the princi- .ple of my invention, as I do not contemplate confining myself to any particular substance from which to form the matrix.

I design to employ in some cases, wherever found desirable, pins or a, engaged with the matrix, the pins being preferably provided with heads. The matrix being thus constructed is filled with any suitable plastic material-such, for instance, as porcelain, rubber, glass-porcelain being preferred. I do not limit myself to any particular substance to be molded into the matrix. In this manner the plastic material is thus molded into indestructible sections, as A, corresponding perfectly to the cavity impressed upon the matrix. The section may then be cemented. into the matrix, and both in turn cemented into the cavity, thus affordinga very efficient and desirable filling therefor.

In the employment of porcelain and certain forms of rubber they may be modified in color, so as to approach the shade of the natural tooth,while at the same time they will takea polish, and will be also very durable, the porcelain filling with the platinum matrix presenting the greatest advantages, and are therefore the most desirable. The thin piece of annealed platinum plate may be readily swaged into the cavity of the tooth, and thus a most perfect impression of the outlines of said cavity be obtained. Any surplus edges of the plate may be readily trimmed off. The pins are preferably made of platinum, if employed, pure gold-leaf being used for solder in attaching them to the mold. Pins may also be engaged with the mold to serve to more firmly retain the porcelain or other filling in engagement therewith.

In the formation of the section porcelain paste or body is built into the matrix, and may be readily carved or modified to imitate the original contour of the exterior of the lost portion of the tooth. They may then be fused in the ordinary manner. Thus, when completed, each section will be a reproduction in porcelain or other material of the lost part of the natural tooth,which, if shaded in color, will resemble nature with a very great degree of perfection. I

Instead of swaging or burnishing the matrix into the entire cavity of the tooth said cavity may first be partially filled with a soft filling, a as shown in Fig. 10, the matrix and plug illustrated in Figs. 2, 3, and 4 being constructed for such application, and thus the matrix may be burnished or swaged to exactly fit the the outer edges of the tooth about the cavity. lVhen the matrix with its adherent section is thus ready for application to the natural tooth, the soft filling is applied, when pins upon the matrix may be readily embedded therein and the matrix pressed into place,any surplus of soft filling oozing out about the edges of the matrix and the matrix being cemented upon adjacent portions of the tooth.

By the use of soft filling for a portion of the cavity the pins may be readily embedded therein, while at the same time labor is saved in fitting the matrix, as it need only be fitted around the exterior edges of the cavity, a less quantity of material for the sections or plug being also required.

Instead offorming a matrix, the metallic plate swaged or burnished to fit the cavity, or a portion thereof, may constitute a mold, A, as indicated in Fig. 7.

The filling orsection,when fitted to this mold as before described, may be separated therefrom,and as the mold is very thin the plug may be cemented or engaged in thecavity of the tooth without the mold, the metallic plate simply serving, to form a mold for the formation of the filling or plug. In this case no pins will be necessary in connection with the mold, the filling or section being engaged with the tooth. This modification is illustrated in Figs. 6, 7, 8, and 9.

Various matrices may be made by a series of dies which will approximate certain variously-shaped cavities in different kinds of teeth. Matrices so formed may be put upon the market as articles of manufacture,and then when it is desired to fill a cavity approximatelyshaped matrices may be selected, which, with a little additional swaging or burnishing, may be made to exactly fit the contour of the cavity and considerable work be thereby saved, as the matrix at the outset is approximatel y shaped to the cavity. The plastic material may be then fitted upon the matrix and the process of filling completed.

Instead of employing pins engaged with the matrix, loops a, or eountersinks a,will serve the same purpose, as shown in Fig. 10.

What I claim is 1. The process of securing an impression of a cavity in a decayed tooth by means of a thin plate of suitable metal fitted to said cavity, substantially as described.

2. The process of restoring decayed teeth, consisting, first, of securing the impression of the cavity in a decayed tooth by means of a thin plate of metal fitted into said cavity and forming a mold or matrix; second, in molding into said matrix a plastic material to form a section or plug, and, third, securing said section or plug into the cavity of the natural tooth, substantially as described.

3. The process of restoring decayed teeth, consisting of, first, securing an impression of the cavity of a decayed tooth by means of a thin plate of metal fitted into said cavity and forming a matrix; second, of molding a plastic material into said matrix to form a section or plug; third, securing said section or plug upon the matrix, and, fourth, securing both the matrix and its adherent section or plug into the cavity of the natural tooth, substantially as and in the manner described.

4. The process of restoring decayed teeth, consisting of securing the impression of a cavity in a decayed tooth by means of a thin plate of metal to form a matrix; second, to provide said matrix with engaging-pins, loops, or countersinks; third, to mold into said matrix a plastic substance to form a section or plug; fourth, engaging said section or plug upon a matrix, and, fifth, securing said matrix,with its adherent section or plug, into the cavity of the natural tooth, substantially as described.

5. The process of restoring decayed teeth, consisting of, first, partially filling the cavity to cover an exposed pulp as a protection; second, securing the impression of the cavity by means of a thin plate of metal fitted to said cavity to form a matrix; third, molding a plastic substance into said matrix to form a section or plug,and,fourth, securing theformed plug or section in the cavity, substantially as and in the manner described.

6. The combination, substantially as described, of a matrix and a section or plug, said matrix provided with engaging devices upon both sides for securing the section or plug to the matrix, and the matrix to the tooth, substantially as described.

IIO

7. The herein-described process of shaping I molded and while yet in the mold to form said a filling substance into the exact shape of a section, substantially as described. 10 cavity of a decayed tooth to form a section, In testimony whereof Isign this specification consisting, first, of fitting a thin sheet of metal in the presence of two witnesses.

into said cavity to form a mold; second, re- CHARLES H. LAND. moving said sheet, and causing said filling sub- Witnesses:

stance to conform to the same as a mold, and, N. S. WRIGHT,

third, hardening said filling substance when VVELLs W. LEGGETT.