DE130611C

DE130611C -

Info

Publication number: DE130611C
Application number: DENDAT130611D
Authority: DE
Publication date: 1900-01-01

Description

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KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Vorliegende Erfindung betrifft eine Vorrichtung zur Befestigung künstlicher Zahnkronen, deren vorderer Theil langer ist als der hintere, und die sich gegenüber den bekannten Befestigungsarten dadurch unterscheidet, dafs in die Krone zwei gegen die Wurzeloberfläche gerichtete Crampons eingelassen sind, welche in der Richtung von der labialen zur lingualen Seite der Krone eine gewisse Ausdehnung besitzen und zwischen sich einen Raum frei lassen, welcher zur Aufnahme des flachgedrückten Kopfes eines Verbindungsstiftes dient. Ferner ist der zwischen Wurzel und Zahnkrone befindliche freie Raum von einer leicht flüssigen Metallmasse ausgefüllt, welche die nicht in der Wurzel und Krone liegenden Theile der Crampons und des Stiftes umgiebt und gleichzeitig Wurzel und Krone verbindet.The present invention relates to a device for fastening artificial tooth crowns, the front part of which is longer than the rear part, and which is opposite to the known types of attachment is distinguished by the fact that two crampons are set into the crown, which are directed towards the surface of the root have some extent in the direction from the labial to the lingual side of the crown and leave a space between them to accommodate the flattened Head of a connecting pin is used. Furthermore, the one between the root and the crown of the tooth The free space is filled with a slightly liquid metal mass, which the not and parts of the crampons and the pin lying in the root and crown at the same time connects the root and the crown.

Diese Befestigungsweise hat gegenüber den bekannt gewordenen den Vortheil, dafs das Einsetzen der Krone mit Leichtigkeit zu bewerkstelligen und dabei eine grofse Genauigkeit zwischen Krone und Wurzel zu erreichen ist.This method of fastening has the advantage over those that have become known that this Insertion of the crown can be carried out with ease and at the same time great accuracy between crown and root can be reached.

Ferner ist wenig Schleifarbeit erforderlich, und man ist aufserdem nicht so abhängig von der Richtung des Wurzelkanales wie bei der bisherigen Befestigungsweise, bei welcher die Stifte in den Kronen eingebrannt oder mit Cement festgemacht waren. Die Krone ist überdies in sehr schlechte, tief liegende Wurzeln leicht einzupassen. Der Druck ist endlich gleichmäfsig auf die ganze Wurzel vertheilt, wodurch die Gefahr des Sprengens der Wurzel beseitigt wird. Auch ist nur eine geringe Menge von Bindemittel (Cement und dergl.) erforderlich, wodurch ein erneuertes Cariöswerden der Zahnwurzel verhindert wird. Das Einsetzen der neuartigen Zahnkrone ist äufserst leicht, da dieselbe, nach einem genauen Abdruck hergestellt, beim Eindrücken in den Wurzelkanal von selbst die richtige Lage einzunehmen sucht.Furthermore, little grinding work is required and one is also not so dependent from the direction of the root canal as in the previous method of attachment, in which the pins were burned into the crowns or fastened with cement. The crown is moreover, easy to fit into very bad, deep-set roots. The pressure is finite evenly distributed over the whole root, whereby the danger of the root bursting is eliminated. Also, only a small amount of binding agent (cement and the like) is required, whereby a renewed carious development of the tooth root is prevented. That Insertion of the new type of tooth crown is extremely easy because the same, after a precise impression made to assume the correct position by itself when pressing into the root canal seeks.

Die Anordnung ist auf der anliegenden Zeichnung dargestellt, und zwar zeigen:The arrangement is shown on the attached drawing, namely show:

Fig. ι eine Seitenansicht einer mit der neuen Krone versehenen Zahnwurzel,Fig. Ι a side view of a tooth root provided with the new crown,

Fig. 2 einen Längsschnitt von Fig. 1,Fig. 2 is a longitudinal section of Fig. 1,

Fig. 3 einen Querschnitt nach Linie A-B der Fig. 2,FIG. 3 shows a cross section along line AB of FIG. 2,

Fig. 4 bis 8 verschiedene Ausführungsformen von Crampons,4 to 8 different embodiments of crampons,

Fig. 9 eine Seitenansicht einer anderen Ausführungsform der Krone für vordere Backenzähne, 9 is a side view of another embodiment of the crown for anterior molars;

Fig. 10 einen Längsschnitt von Fig. 9,FIG. 10 shows a longitudinal section from FIG. 9,

Fig. 11 einen Querschnitt nach Linie C-D der Fig. 10,11 shows a cross section along line CD of FIG. 10,

Fig. 12 einen Querschnitt nach Linie E-F, 12 shows a cross section along line EF,

Fig. 13 einen Schnitt nach Linie G-H der Fig. 11,13 shows a section along line GH in FIG. 11,

Fig. 14 bis 17 verschiedene Ausführungsformen von Crampons. 14 to 17 different embodiments of crampons.

Die Krone ist an ihrer Vorderseite langer, an der Rückseite (gegen die Mundhöhle) kürzer. Wie aus der Fig. 3 der Zeichnung zu ersehen ist, werden bei Vorder- und Eckzähnen an der Krone rechts und links von der Mittellinie beispielsweise zwei T-förmige Crampons 3 aus Platin oder dergl. auf bekannte Weise befestigt bezw. bei Porcellankronen eingebrannt. Für die vorderen Backenzähne dagegen wer-The crown is longer at its front and shorter at the back (towards the oral cavity). As can be seen from Fig. 3 of the drawing, the front and canine teeth are on the crown to the right and left of the center line, for example, two T-shaped crampons 3 Made of platinum or the like. Attached respectively in a known manner. Burned in on porcelain crowns. For the anterior molars, on the other hand,

Claims

the loop-like crampons 8 (Fig. 10 to 13) are used, which are embedded with their two ends in the thicker front and rear part of the molar crown, since the legs of the T-shaped crampons would have to be embedded at the point of the crown where the The wall thickness of the porcelain mass is the weakest. The space between the two crampons is used to accommodate the flattened upper end of the pin 4, the other end of which lies in the root canal. The connection between the crown and the root forms a light metal mass (lightning cast or the like), which completely fills the free space between the crown and the root, adjoins the tooth root and the crown and at the same time creates a rigid connection between the crampons and the post . Of course, the crampons do not need to have the T-shape shown in FIG. 2 for the six front teeth, but other shapes, e.g. B. those indicated in Figs. 4 to 8 can be used. With the molars, the cross-section of the loop-like crampons can also be any. It is also not absolutely necessary for the crampons to form an arch; they can be shaped in various ways, as indicated, for example, in FIGS. As already mentioned, a pin 4 is used as the connecting link in the present tooth crown, the cross-section of which can be of any desired shape, only the upper part of the same between the crampons must be flat and the end of the part located in the root sharp or sharp. be sharp. The surface of the same is provided with notches for the purpose of better hold on the cement mass. The purpose of the channel 7 in the pin 4 is to facilitate removal of the pin in the event of the crown breaking. When attaching the tooth crown, one moves on. the following way: First, the tooth root 2, as shown in Fig. ι and 2 respectively. 9 and 10 can be seen, designed somewhat funnel-shaped and the thin front wall of the crown at 5 precisely adapted to the root by grinding. Furthermore, the pin 4 is set up in the root canal in such a way that its head comes to rest between the two crampons 3 or 8 (cf. Figs. 3 and 11), without thereby disturbing the contact of the crown on the anterior part of the root. Then soft wax is placed in the crown around the crampons, and the pin 4, which is coated with easily melting metal (lightning cast or the like) for better retention at the broadly pressed end, is inserted slightly warmed between the crampons. Now the post with the wax is brought into the root canal, whereby the crown gets exactly the right position. This gives you a completely accurate wax impression of the root surface. The whole thing is then carefully removed so that the wax does not warp. Now the crown is embedded with the pen and wax in a plaster model, the wax is removed with hot water, the model is dried, heated and covered with metal, e.g. B. lightning cast or the like., Poured out. After cooling, the model is broken, the crown is removed with the metal guf and pin and the excess metal is filed off, paying close attention to the impression of the root edge. The crown is now ready to be inserted and is attached to the root with just a little cement 6. The arrangement described can be used with advantage and a great deal of labor savings for bridge work and replacement parts with metal plates using lightning cast, rubber or enamel as the connecting material. Patent-A ν Proverbs:

1. Device for fastening artificial tooth crowns, the front part of which is longer is characterized as the posterior part, characterized by the fact that two into the crown on the side (base) turned towards the root Crampons directed against the surface of the root are embedded in the direction of have a certain extent from the labial to the lingual side of the crown, so that they enclose a space between them, which can accommodate the flattened Head of a connecting pin is used.

2. An embodiment of the device according to claim 1, characterized in that the two crampons as flat-like bodies embedded in the crown with one leg are trained.

3 ·. An embodiment of the device according to claim 1, characterized in that the two crampons are eyelet-like and embedded with their two legs in the tooth crown.

1 sheet of drawings.