DE3436259A1 - Device for measuring and/or working a master model for the preparation of a dental prosthesis - Google Patents

Abstract

A device for measuring and/or working a master model for the preparation of a dental prosthesis is provided with a wax-receiving container (1) possessing a wax chamber (2). Furthermore, there is provided a heating device (4) and at least one vertical guiding surface (6). An outlet opening (5) for liquid wax is located in the region of the guiding surface (6) in the lower region. In addition, a second guiding surface (7) for a drawing pen (9) and a third guiding surface (10) for an undercut meter (11) can be present. <IMAGE>

Description

Device for measuring and / or processing a master model for the production of dental prostheses The invention relates to a device for measuring and / or processing of a master model for the production of dentures with a Device for applying wax.

For measuring and processing a master model that will be used for production of dentures, e.g. prostheses, are several work steps necessary.

In a first step, the equator of the tooth to be machined must be to be established. So far, this has been done with the help of a facility to which a pen is attached, which while driving around the tooth marks the equator. In a second step, a so-called Undercut knife, which was set on the previously marked equator, the undercut of the tooth measured.

The exact determination of the undercut is necessary so that e.g. the clasps of a prosthesis can find support.

In a third step, wax is applied with a wax knife applied to the undercut area of the tooth. Finally you remove with a Blocking out rod, which is provided with a heating rod practically guides the block-out stick along the equator as a scraper, the well-known way of working is relatively cumbersome and time-consuming and therefore causes corresponding costs. For this reason, a tripod with two swivel arms is generally used for rationalization used, whereby on one arm the device for marking the equator with the Pin and the undercut knife with its feeler arm is arranged on the other arm. This allows the master model to be processed faster, but the tripod is in turn a corresponding cost factor due to its complexity.

The present invention is therefore based on the object of a device for measuring and / or processing a To create master models, with which the necessary work can be carried out faster and easier can, the device at the same time also simple in structure and thus inexpensive should be.

According to the invention, this object is achieved by a wax receptacle, which a) has a wax room, b) is provided with a heating device, c) at least has a vertical guide surface and d) in the lower region with an outlet opening for liquid wax is provided in the area of the guide surface.

Instead of a cumbersome and relatively imprecise application of the wax Using a wax knife, this is now transferred directly to the wax container via the Undercut area introduced. Due to the heating device, the wax is in sufficient Dimensions are liquefied and the guide surface ensures precise guidance on the equator, along which it is moved.

With this configuration, the wax can be traced of the equator easily and quickly and very accurately Instruct.

The heating device can be inserted into a bore in the wax receptacle be plugged in heating rod with a corresponding power supply, in general electric current is provided.

The outlet opening is expediently at the bottom of the guide surface arrange, whereby it opens laterally exactly in the area of the undercut of the tooth.

So that the heated and liquid wax does not escape uncontrollably Outlet opening can leak, it can be provided that this through a flap is lockable.

A very advantageous development of the invention consists in that the wax receptacle is provided with a second vertical guide surface is on which a holding device is arranged with a pen.

The fact that the housing of the wax container with a second If the guide surface is provided, the device according to the invention fulfills a double function. In this way one can have a separate device for determining the equator save on.

This means that there is no separate device for measuring the equator must be specially clamped and aligned in the swivel arm of a tripod.

The second guide surface is advantageously the first Arrange the guide surface opposite. In this case it is only necessary after measuring the equator, rotate the wax container 1800 to then to be able to apply the wax.

Another very advantageous development of the invention The device consists in the fact that the wax receptacle has a third guide surface is provided, on or in which an undercut knife is arranged or installed is.

The arrangement of a third guide surface makes the wax receptacle exploited in an optimal way. Practically all required can now be used Operations can be carried out with a single device. This means, for example, that now a simpler tripod with only a single swivel arm can be used can. Transitioning or setting up work for the individual work steps can now omitted.

The combination device according to the invention allows the work on the master model much more efficiently and thus faster.

The wax receptacle can in principle have any shape. It is only essential that it has guide surfaces that are generally vertical and guided along the equator of the tooth to be measured and machined can be.

For example, the wax container can have an elongated rectangular shape have, wherein the first and the second guide surface are the narrow sides.

The undercut knife with its button can be on a broad side of the wax container with the stylus protruding laterally.

For reasons of space it can be provided that the narrow side of the wax receptacle, where the holder with the pen is located and where the stylus is located protrudes, is spread open laterally by one or two extensions, with am End of an extension the bracket and / or the stylus.

With the extensions, the corresponding facilities can be connected to the wax container are arranged at a greater distance from each other, making it easier to work.

It is advantageous if the wax container is on the underside has an inwardly drawn wall area.

With this configuration, the device according to the invention can also be used in tight spaces. Through the inward drawn wall area the device can be retracted into gaps in the dentition.

The shape of the drawn-in wall area can be any.

In a simple manner, it can be designed in the form of a partial arc be0 If the trailing edge of the first guide surface is used as a scraper edge for superfluous Wax is formed, the wax can be applied in a single operation be terminated.

Below is an embodiment of the invention based on the drawing described in principle.

1 shows a side view of the device according to the invention; FIG. 2: a longitudinal section along the line II-II in FIG. 3, FIG. 3: a plan view to the device according to FIG. 1; Fig. 4: a plan view of an inventive Device in a modified form.

The wax receptacle 1 according to the invention has an elongated one Cuboid shape. The wax receptacle 1 is provided with a wax chamber 2 and a bore 3 provided.

Wax is introduced into the wax chamber 2 and allowed to enter the bore 3 Insert a heating element 4 as a heating device. As a material for the wax container 1 one chooses a highly conductive material, which means that when the heating element is switched on 4 a liquefaction of the wax in the wax chamber 2 quickly occurs. In this way the wax can be used as a guide surface via an outlet opening 5 in the lower region 6th flow out formed narrow side of the wax receptacle. The opening wall the outlet opening can protrude slightly beyond the guide surface 6.

On the side opposite the guide surface 6 is located a second guide surface 7 with a holder 8 for a pen 9. The Holder 8 for the pen 9 is not described in detail. You can in the frame of the invention be arbitrary. You should only be designed so that the pen 9 can be easily readjusted and replaced if necessary.

On a broad side 10 of the wax receptacle 1 is an undercut knife or measuring device 11 with a stylus 12 is arranged. The stylus 12 protrudes laterally on the wax container.

This can be done e.g. on a narrow side, e.g. on the guide surface 7 be the case, which thus has a double function, or on the broadside0 If the stylus 12 protrudes on the guide surface 7, it is advantageous if this guide surface is increased accordingly. The wax receptacle is used for this purpose 1 provided with a lateral extension 13 on which the holder 8 with the pen 9 is arranged. This way becomes a greater distance between the pen 9 and the stylus 12 reached.

The form of the extension can be arbitrary0 If necessary, a second Extension can be provided in which then the undercut knife with its stylus As can be seen from Figures 1 and 2, the wax container is 1 provided on the underside with an inwardly drawn wall area 14, which has a partial arc shape. In this way the device can also be tight Switching gaps in the dentition are retracted. The device according to the invention works now in the following way: To carry out the necessary work, the wax container 1 clamped in the swivel arm of a tripod (not shown). This can e.g. take place via the heating rod 4.

First, the guide surface 7 is drawn with the drawing pen approaches the tooth to be processed and moves the wax container around the tooth hereabouts. In this way, the drawing pen 9 makes the exact equator of the tooth marked.

The undercut knife is then used to measure the undercut of the tooth 11 with its guide surface 10 or with the correspondingly expanded guide surface 7 applied to the equator, the protruding stylus 12 measuring the undercut, which is indicated in the usual way on a scale 150 The structure and the The mode of operation of the undercut knife 11 is of a known type, which is why it is based on this At this point it will not be discussed in more detail after determining the undercut the wax receptacle 1 is again rotated about a vertical axis, so that the guide surface 6 can be placed on the equator of the tooth. Now becomes the heating element 4 switched on, the liquid wax can flow out of the outlet opening 5 and so that they can be introduced directly into the undercut area so that it extends to Equator is filled. If the trailing edge of the guide surface 6 is not at the same time is designed as a wiper edge, it is only necessary with a corresponding one Scraper knife scrape off any excessively worn wax.

The undercut measuring device can be an assembly with the wax receptacle 1, i.e. housed in the same housing, or it is attached to the wax container 1 flanged, e.g. by screwing, gluing and the like.

- blank page -

Claims (12)

Claims: 1) Device for measuring and / or processing of a master model for the production of dentures with a device for application of wax, not indicated by, a wax receptacle (1), the a) has a wax room (2), b) is provided with a heating device (4), c) has at least one vertical guide surface (6) and d) in the lower region with an outlet opening (5) for liquid wax in the area of the guide surface (6) is provided. 2) Device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the heating device is inserted into a bore (3) of the wax receptacle (1) is inserted heating rod (4). 3) Device according to claim 1 or 2, d a d u r c h e k e n n z e i c h n e t that the outlet opening (5) is arranged at the bottom of the guide surface (6) is. 4) Device according to claim 1, 2 or 3, d a d u r c h g e k e n It is noted that the outlet opening (5) can be closed by a flap. 5) Device according to one of claims 1-4, d a d u r c h g e k It is noted that the wax receptacle (1) has a second vertical Guide surface (7) is provided on which a holding device (8) with a drawing pen (9) is arranged. 6) Device according to claim 1 and 5, d a d u r c h e k e n n z e i c h n e t that the second guide surface (7) of the first guide surface (6) opposite is. 7) Device according to claim 6, d a d u r c h g e k e n n z e i c h n e t that the wax container (1) with a third guide surface (10) is provided, on or in which an undercut knife (11) is arranged or installed is. 8) Device according to claim 6 or 7, d a d u r c h e k e n n z e i c h n e t that the wax receptacle (1) has an elongated rectangular shape having, wherein the first and the second guide surface (6 and 7) are the narrow sides are. 9) Device according to claim 8, d a d u r c h g e k e n n z e i c h n e t that the undercut knife (11) on a broad side of the wax container (1), the stylus (12) protruding laterally. 10) Device according to claim 9, d a d u r c h g e k e n n z e i c n e t that the narrow side of the wax receptacle (1) on which the holder is (8) with the pen (9) and on which the stylus (12) protrudes to the side is spread by one or two extensions (13), at the end of an extension the holder (8) and / or the stylus (12) lie. 11) Device according to one of claims 1 - 10, d a d u r c h g e it does not indicate that the wax receptacle (1) has one on the underside has inwardly drawn wall area (14). 12) Device according to one of claims 1-11, d a d u r c h g e it is not indicated that the rear edge of the first guide surface (6) as Wiper edge is designed for excess wax