Year: 1894

page_text: Date of Application, 14th Dec., 1894-Accepted, 18th May, 1895
Fig. 15 a side elevation of Fig. 14;
Fig. 16 side elevation of a finished tooth;
Fig. 17 shown the tooth having connected thereto a metal protecting plate;
Fig. 18 a side elevation of the finished tooth;
Fig. 19 a similar elevation of a tooth which has been altered to solder on to the
plate, and
Figs. 20 and 21 show side elevation and plan respectively of a pincer for holding
the teeth during the operation.
The tooth is first provided at the back with a more or less smooth surface in
which a depression or groove b (Figs. 14 and 16) is formed at the bottom of which
tolerably large holes c c are bored. These preparations are made to ensure a
thoroughly strong connection of the tooth to an enamel mass to be applied thereto
as hereinafter described. The groove b as also the holes c are now filled out with a
suitable enamel mass and the crampoons or metal retaining pieces a inserted into
the holes c. After the whole surface has been coated with enamel, i.e. a more or
less thick protrusion formed on the same as shown in Fig. 18 in dotted lines the
tooth is placed in a suitable muffle and melted together. In the case of damaged or
LP 1

page_text: broken teeth where several pieces are to be connected together or if required to
improve the appearance of the teeth generally the whole tooth may be covered
with a thin coating of enamel. This may be done simultaneously or subsequently
by a separate operation. In dealing with broken teeth it is advantageous to
provide the broken surfaces with a thin coating of enamel. The tooth thus mended
is equal to an entirely new one.
By means of the present process natural teeth which have been extracted may
be used as artificially attached teeth as is often desired by many persons having
lost healthy teeth for some reason or other.
The natural tooth must in such cases be covered with a thin coating of thinly
fluid enamel in order to prevent the destruction of the organic substances. The
process is otherwise conducted as previously described. The teeth may be provided
with metal protecting plates in the following manner: After the fastening wires
or studs have been put in position the metal plate is fastened to the back of the
teeth by (Fig. 17-19) bending round the said fastening wires or studs and thus
retaining the plate in position. In order to still further increase the durability
the plate may then be soldered and if desired enamelled. As shown in Fig. 18
the metal plate is then securely attached to the tooth.
According to the present process all the ordinary kinds of teeth may be employed
as so called soldered teeth, as shown at Fig. 19, the dotted lines showing the
enamel applied.
The teeth shown in Figs. 1-13 are the various special kinds generally known in
dental surgery and which could hitherto only be applied in the manner in which
they were originally intended to be, but by means of the present process any such
tooth may be altered and adapted to serve in almost any capacity.
Figs. 20 and 21 show a holder or pincers by means of which the tooth is
held during the operations above described. The said pincers are provided with
broad gripping surfaces de having teeth the cheek e being bent round; a
sliding band g clamps the pincers or tongs in position with the tooth between
them.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
(1.) A process for repairing damaged artificial or natural teeth consisting in first
providing the same with suitable depressions filling the same with enamel and
inserting the retaining parts or studs and melting the whole in a suitable muffle
substantially as described.
(2.) A process for repairing damaged artificial or natural teeth consisting in
first providing the same with suitable depressions filling the same with enamel
and inserting the retaining parts or studs covering the tooth with a thin enamel
coating and melting the whole in a suitable muffle substantially as described.
(3.) Fastening a tooth to a metal plate by bending the retaining studs or gripper
over said plate and covering the whole with an enamel coating.
(4.) An instrument for fastening teeth consisting of the combination of two arms
attached together at their lower ends and having broad upper gripping surfaces
having gripper teeth one of said surfaces being slightly bent round substantially as
described.
Dated this 14th day of December 1894
CASTLE SMITH,
"Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.