Year: 1888

page_text: A communication from abroad by THE PORCELAIN DENTAL ART Co., of the City'
of Detroit, County of Wayne, State of Michigan, United States of America.
1, WILLIAM PHILLIPS THOMPSON F.C.S. M.L.M.E. of the Agency for Foreign Patent
Solicitors 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both in the
County of Lancaster and 323 High Holborn in the County of Middlesex, Civil Engineer
do hereby declare the nature of this invention to be as follows:-
The invention relates to a process for filling teeth and restoring them to normal shape,
size, and colour, and to devices for accomplishing the same, hereinafter described.
Figure 1 represents a tooth cavity ready for filling.
Figures 2 and 3 different views of a matrix fitted to said cavity.
Figure 4 a filling fitted to said matrix.
Figure 5 the filling applied to the cavity.
Figure 6 a modification of the cavity.
Figure 7 a modification of the matrix.
Figure 8 a modification of the filling.
Figure 9 the filling applied.
Figure 10 an additional modification.
Figure 11 a section illustrating its application to a cavity partially filled with soft
filling.
The object includes:
1st. Means for moulding indestructible substances into sections corresponding in
form to decayed portions of teeth.
2nd. The provision of thin metallic matrices by swaging or burnishing the metal
into tooth cavities to secure a perfect impression of the cavity.
Brd. Using this matrix as a mould for producing a solid section of suitable material.
corresponding to the form of the tooth cavity.
4th. Securing said section in said cavity with or without the metallic matrix.

page_text: 5th. The production of matrices as articles of manufacture.
6th. The partial filling of the cavity' and fitting the matrix thereupon.
7th. The provision of matrices with pins to engage in said partial filling, and fitted
to receive said sections upon the opposite side.
A represents a tooth. A a cavity ready for filling. A a metallic matrix formed
by swaging or burnishing a thin metal into the cavity to secure an impression thereof.
Any suitable metal is used, as platinum or gold. In some cases the matrices may be
furnished with pins a, a¹. A matrix so constructed is filled with any suitable plastic
substance, preferably porcelain paste, which substance is thus moulded into
indestructible sections A³, corresponding to the cavity impressed upon the matrix.
This section may then be cemented into the cavity, and forms a durable filling
therefor. The sections may be modified in colour and polished to resemble the natural
tooth. Pins may be engaged with the matrix to more firmly retain the filling in
engagement therewith. When applied to the matrix, the filling may be, shaped,
exteriorly, as desired to imitate the exterior of the natural tooth. The fillings may be
fused in the ordinary manner, thus each section is a reproduction of the lost portion of
the tooth into which it is fitted.
Instead of fitting the matrix into the entire cavity, the cavity may first be partially
filled with a soft filling a², the matrix being fitted to the outer edges of the tooth about
the cavity.
The matrix and its section being made ready for application, the soft filling is applied
to the cavity, and the pins of the matrix may be embedded therein, as the matrix
pressed into place, surplus soft filling oozing out, the matrix may be cemented upon
adjacent tooth portions. The soft filling saves. labor, and material for the matrices
and sections. The metal fitted to the cavity or a portion thereof, may constitute a
mould A, and the section conformed thereto may be separated therefrom, and engaged
in the cavity without the mould. No pins, in this case, are required. Figures 6, 7, 8,
and 9 are illustrations.
Various matrices may be made by suitable dies approximating various cavities, and
sold as articles of manufacture, which, with slight additional labor may be exactly
fitted to a given cavity. Loops a³ or countersinks a' may serve the same purpose as
pins, as in Figure 10. The matrix may be made of a thin metal plate.
Dated this 21st day of March 1888.

page_text: Improvements in or relating to Filling Teeth.
A communication from abroad by THE PORCELAIN DENTAL ART Co. of the City
of Detroit, County of Wayne, State of Michigan, United States of America.
1. WILLIAM PHILLIPS THOMPSON, F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both in
the County of Lancaster and 323 High Holborn in the County of Middlesex, Civil
Engineer do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :—
The invention relates to a process for filling teeth and restoring them to normal
shape, size, and colour, and to devices for accomplishing the same, hereinafter
described and claimed.
Figure represents a tooth cavity ready for filling.
Figures 2 and 3 different views of a matrix fitted to said cavity.
Figure 4a filling fitted to said matrix.
Figure 5 the filling applied to the cavity.
Figure 6 a modification of the cavity.
Figure 7 a modification of the matrix.
Figure 8 a modification of the filling.
Figure 9 the filling applied.
Figure 10 an additional modification.
Figure 11 a section iliustrating its application to a cavity partially filled with
soft filling.
The object includes:-
1st. Means for moulding indestructible substances into sections corresponding in
form to decayed portions of teeth.
2nd. The provision of thin metallic matrices by swaging or burnishing the metal
into tooth cavities to secure a perfect impression of the cavity.
3rd. Using the matrix as a mould for producing a solid section of suitable material
corresponding to the form of the tooth cavity.
4th. Securing said section in said cavity with or without the metallic matrix.
5th. The production of matrices as articles of manufacture.
6th. The partial filling of the cavity and fitting the matrix thereupon.
7th. The provision of immatrices with pins to engage in said partial filling, and fitted
to receive said sections upon the opposite side.
A represents a tooth, A a cavity ready for filling, A2 a metallic matrix formed by
swaging or burnishing a thin metal into the cavity to secure an impression thereof.
Any suitable metal is used such as platinum or gold. In some cases the matrices
be furnished with pins a a¹. A matrix so constructed is filled with any suitable
plastic substance, preferably porcelain paste, which substance is thus moulded into
indestructible sections A³ corresponding to the cavity impressed upon the matrix. This
may
'

page_text: section may then be cemented into the cavity, and forms a durable filling therefor.
The sections may be modified in colour, and polished to resemble the natural tooth.
Pins may be engaged with the matrix to more firmly retain the filling in engagement
therewith. When applied to the matrix the filling may be shaped, exteriorly, as
desired, to imitate the exterior of the natural tooth. The fillings may be fused in the
ordinary manner. Thus each section is a reproduction of the lost portion of the tooth
into which it is fitted.
Instead of fitting the matrix into the entire cavity, the cavity may first be partially
filled with soft filling a², the matrix being fitted to the outer edges of the tooth about
the cavity. The matrix and its section being made ready for application, the soft
filling is applied to the cavity, and the pins of the matrix may be embedded therein,
as the matrix is pressed into place,,surplus soft, filling oozing out. The matrix may
be cemented upon adjacent tooth portions. The soft filling saves labour and material
for the matrices and sections. The metal fitted to the cavity or a portion thereof may
constitute a mould A', and the section conformed thereto may be separated therefrom
and engaged in the cavity without the mould. No pins, in this case, are required.
Figures 6, 7, 8 and 9 are illustrations.
Various matrices may be made by suitable dies approximating various cavities, and
sold as articles of manufacture, which, with slight additional labour may be exactly
fitted to a given cavity. Loops or countersinks a may serve the same purpose as
pins, as in Figure 10. The matrix may be made of a thin metal plate.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is :-
1st. The process of securing an impression of a tooth cavity by fitting thereto a
thin metallic plate, substantially as described.
2nd. The process of restoring decayed teeth by first securing an impression of the
tooth cavity by means of a thin metallic plate fitted thereinto and forming a matrix:
second, moulding a plastic material into said matrix to form a section; third,
securing said section with or without the matrix into said cavity, substantially as
described.
3rd. The process of restoring decayed teeth by securing the impression of a tooth
cavity by means of a thin metallic plate to form a matrix; providing said matrix
with engaging devices; moulding a plastic substance into the matrix to form a
section; engaging said section upon the matrix, and securing said matrix and section
into said cavity, substantially as described.
4tb. The process of restoring decayed teeth by partially filling a tooth cavity to
cover an exposed pulp as a protection; securing the impression of the cavity by
fitting thereinto thin metallic plates to form a matrix; moulding a plastic material
into said matrix to form a section; and securing said section into said cavity.
substantially as described.
5th. The combination of a matrix, and the section, said matrix provided with
engaging devices upon both sides, substantially as described.
6th. The process of shaping a filling substance into the form of a tooth cavity to
form a section consisting of fitting a thin metallic sheet into the cavity to form a
mould removing said sheet and moulding the filling substance into conformity
therewith and hardening said filling substance when moulded, substantially as
described.