US776718A - Matrix-holding device for filling teeth. - Google Patents

Description

No. 776.718. PATENTBD DBO. 1904.

I 0. M. BEAM.

MATRIX HOLDING EEvmE EOE FILLING TEETH.

APPLICATION FILED APR. 2, 1904.

NO MODEL.

WITNESSES: INVENTOR (2 Q Zefomey N0. 776,718. Patented December 6, 1904:.

TTED STATES PATENT CALVIN MIGHAUX BEAM, OF SHELBY, NORTH CAROLINA.

MATRIX-HOLDING DEVICE FOR FILLING TE ETl""ll..

SPECIFICATION forming part of Letters Patent No. 776,718, dated December 6, 1904,.

Application filed April 2, 1904:. Serial No. 201,314. (No model.)

view of one of the matrix-engaging members To (all whom it may concern:

Be itkuown that I, CALVIN MIoHAUX BEAM, of the invention, and Fig. 6 is a detail view a citizen of the United States, residing at showing the manner of attachment of one end Shelby, in the county of Cleveland and State of thematriX-strip to the screw-carrying memof North Carolina, have invented certain new ber.

and useful Improvements in Matrix-Holding Reference now being had to the details of Devices for Filling Teeth; and I do declare the drawings by letter, A and B designate, rethe following to be a full, clear, and exact despectively, a second bicuspid and a first molar scription of the invention, such as will enable having the mesial and distal surfaces thereof IO others skilled in the art to which it appertains decayed, and in applying my dental matrix to make and use the same, reference being had devices or holders for the treatment of said to the accompanying drawings, and to the letteeth for filling and building up the same I ters of reference marked thereon, which form provide two matrix strips similar in cona part of this specification. struction and each designated by letter C.

5 This invention relates to new and useful im- Said matrix-strips may be easily made by the 5 provements in a combination of holding dcoperator to suit individual cases and of any vices for dental matrices for use in filling suitable metal,such as German silver or steel, teeth; and the object of the invention is to and must be thin enough to be easily passed produce a universal posterior and anterior between the teeth to be filled.

2O matrix-holder which may with aid of matriX- Referring to Fig. 1 of the drawings,'two 7 strip be conveniently and readily applied to matrix-holding devices are illustrated, right teeth having various forms of cavities thereand left,(designated by letters 1) and D.) Said in, whereby the same may be properly filled members are formed, preferably, of steel, the and the teeth built up. arms of which are angled, coming from 5 My invention consists in various details of threaded and swivel screw connection about construction and in combinations and arrangeone-twentieth inch, turning downward about ments of parts, which will be hereinafter fully one-third inch, and are rounded at corredescribed and then specifically defined in the spending ends, and a longitudinal slit (Z is appended claim. formed in each member for the reception of 3 My invention is illustrated in the accornone end of a 1natrixstrip, and a suitable wire panying drawings, which, with the letters of E orother fastening device is passed through reference marked thereon, form a part of this registering apertures in the shank portions of application, and in which drawings similar letsaid members and in the matrix-strips, whereters of reference indicate like parts in the by the ends of the strips maybe securely fas- 35 views, in which tened to said members. The outer angled 5 Figure 1 is a perspective view showing my ends of the members D, which extend rearinvention with matrix-strip as applied to a hiward and in opposite directions, are provided cuspid and first molar having their Inesial and with apertures (Z, the inner walls of which distal surfaces decayed. Fig. 2 is a perspecapertures are threaded and adapted to receive 4 tive view showing one side of a 1natrix-holdthe screws F, and each of the matrix-holding 9 ing device with strip or prepared matrix as members 1) is also apertured, as at (Z and. applied when the lingual surface of the right each is adapted to receive a portion of one of upper incisor is decayed. Fig. 3 is a persaid screws which has swivel connection therespective view showinga matrix-strip held by with. One end of each of said screws is 45 a matrix-holding device and surrounding a squared in order to perinita wrench to be apmolar in which the lingual side of the same is plied thereto for the purpose of rotating the decayed. Fig. 4: is a detail view of a matrixscrew in one direction or another, accordingly strip before having its ends turned to form as it may be desired to cause the ends of the rolls or perforated corresponding with registwo matrices, which are positioned as shown 5 tering apertures in shank. Fig. 5 is a detail in the drawings, to be forced away from each other or together for the purpose of holding the matrix-strips about a portion of the adjacent faces of the teeth which are being treated.

Referring to Fig. 2 of the drawings will be seen the application of one of my matrixholding devices and a prepared strip as employed when a lingual surface of the right upper incisor is decayed. In this application of my invention I show a slight modification in the manner of applying one of the holding devices for holding the strips adjacent to the tooth, and the modification consists in turning the ends of the strip into cylindrical rolls C, and in this modification the shank portions K i of the strip-holding members are adapted to enter said rolls, and the ends of the strips may be held in the cylindrical rolls by means of solder or other fastening mechanism.

Referring to Fig. 3 of the drawings, I have illustrated the application of one of my matrix-holding devices and a prepared strip in connection with a molar in which the lingual side thereof is gone, and in said Fig. 3 the matrix-strip is passed about the tooth and the ends of the strip are turned into rolls which are engaged by the shank portions of the matrix-strip-holding device and a screw which is swiveled to one member engages threaded walls in the aperture of the other member.

Letter N designates a tooth where only the buccal and lingual walls of the bicuspid are left, and in applying my invention to treat a tooth of this kind it is better to place two strips of the matrix around the tooth instead of between the same, as illustrated in Fig. 1, and by turning the screw in the reverse direction the strips may be securely held to the tooth.

By the provision of my invention or the apparatus shown and described it will be observed that I produce simple and eflicient matrix-holding devices which may securely hold the matrix-strip, and by the application of the screws one or more strips may be held about the tooth to be treated, and by the employment of a wrench the strips may be easily and quickly adjusted,and by the construction illustrated the matrix-strip holders will not interfere with the movements of the operator in treating the teeth to which the matrices are applied.

While I have shown certain forms of ma trix-strips for application to different teeth, it will be understood that many other forms may be made as may be found necessary in the treatment of teeth located in different positions and having cavities positioned at different locations in the tooth, as the object of this invention for holding the matrix-strips is that the operator is enabled to construct his matrices in shape, width, and length to suit each individual case where a dental matrix is used.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is I A dental matrix-holding apparatus comprising two separate matrix-holding members, each having a curved end with a longitudinal slot therein, and apertured bosses at the opposite ends of said members, a matrix, the ends of which pass through said slots, means for fastening said matrix to the members, one of said bosses being interiorly threaded, a screw swiveled in one of said bosses and having threaded connection with the other, as set forth.

In testimony whereof I hereunto aflix my signature in presence of two witnesses.

CALVIN MIUHAUX BEA. lVitnesses:

GEO. B. SAN'roN, L. LGIDNEY.

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