DE9216164U1 - Plate set for synchronizing different articulators - Google Patents

Description

Splitcast plate systems, manufactured using a machining process, were registered by the applicant in multiple versions.

A key element in all of these variants is that a so-called master or mother plate is used to firmly attach plaster bases with a ferromagnetic retention element to the contours of the so-called split cast plate using a magnetic hold, creating a connection to the jaw model.

Extensive investigations and diverse experience have now shown that the plaster expansion can take up to 2 days to change these plaster bases, which can become distorted depending on their design and make it impossible to record them exactly on even the most precisely manufactured split cast plates.

For explanation, it should be added that split cast plates have a so-called split cast relief, which allows the practitioner, i.e. the dentist, to compare different so-called check bites with each other in order to create the correct interlocking of the jaw models obtained in the articulator or denture simulator.

In this procedure, the split cast plates are guided into the counter-relief of the plaster base using the various check bites and, if this is a perfect success with several check bites, the interlocking is considered good.

However, if differences arise between the check bites, it is impossible to align the relief of the splitcast plate with the counter-relief of the plaster base.

Furthermore, since scientific studies have clearly shown that a faulty toothing in a range of 2/100 mm is not tolerated in the control mechanism of the masticatory organ, it is urgently necessary to satisfactorily solve the problem of the warped plaster base.

With the invention presented, two plate elements, manufactured with the highest precision, interlock in such a way that "splitcast control" is possible with these plates alone, as one is firmly connected to the articulator, while the other is positively and force-fittingly connected to it and yet detachably connected in such a way that a method comparable to this can be carried out in terms of splitcast control.

The basic idea is that the articulator-fixed plate preferably engages with its surrounding edge in a form-fitting manner in a model support plate, also of the highest precision, which is detachable, designed as a reusable plate and has retention elements on the model side that are suitable for directly holding the model via a plaster base or similar. The force connection between the two plate elements can be achieved by means of a magnetic hold and/or screwing, pinning, etc., while the connection to the articulator is made in a known manner.

The invention will now be explained in more detail with reference to claims 1-22 and figures 1-6.

Figure 1 shows

in a schematic representation a sectional drawing of the plate set with its connection to the articulator and to a jaw model in detail,

Figure 2

schematically shows a possible design of the articulator plate in top view,

Figure 3

schematizes the corresponding model plate,

Figure 3 a schematically shows a possible

Retention element in section,

Figure 4

schematizes the articulator plate in two variants with elements of the back,

Figure 5

schematic section A as a connection variant to the articulator,

Figure 6

Schematized section B as a possible second connection variant to the articulator.

Figure 1 shows a schematic cross-sectional drawing of the plate set with its connection to the articulator and to a jaw model base in detail. We can see the articulator upper jaw arm (1), which in the variant shown fixes the conical plate (5) in a conventional manner with a fixation screw (2) and the bolt elements (3,4). This is manufactured with the highest precision, with particular emphasis on the precision of the guide surface (12).

In the variant shown, the plate element (5) is additionally provided with the magnet pot system (7,8,9), which corresponds to the ferromagnetic plate element (10) of the model plate (11). In particular, the inclined surfaces (12,13) engage precisely with one another, which ensures that the plate element (5) and the model plate (11) always retain their exact position in the articulator (1).

Figure 1 also shows that the retention elements (14) ensure the preferred detachable connection to the model base (15). Finally, attention should be drawn to the raised part (18) on the left, which, together with others, allows this connection to be placed on the work table when the jaw model has been removed with its model plate (11) without dirtying important functional surfaces.

Figure 2 shows the top view of the plate element (5) with its surrounding edge (12) and the magnet pot variant (16, 17) selected here differently. It should also be pointed out here again that the guide surface (12) is machined particularly carefully.

Figure 3 shows the model plate (11) in a top view, whereby the retention elements (14) are only shown schematically.

Figure 3 a shows a possible variant of such a retention element (14) in section, which is designed here in such a way that flat-head screws (32, 33) are integrated (30, 31) in the plate (11) from the side facing the plate element (5), which are provided (27) with undercut retention caps (19) preferably made of plastic.

Figure 4 shows a schematic of the plate element (5), which we will refer to as the articulator plate (5) in the future. Figure 4 shows two variants, with the conventional connection of the articulator plate (5) with thread (20) and the corresponding recesses (21,22) for the bolts (3,4) of the articulator (1) being shown on the right-hand side.

On the left side, however, the undercut area (25) is shown, which creates the connection to the articulator (1) using a connecting medium for different articulators with a retention nut. The reference numbers (20, 21, 22, 25) refer to the back of the articulator plate (5).

Figure 5 shows a schematic section A of Figure 4 as a connection variant to the articulator, whereby reference can essentially be made to the explanations in Figure 4. It should only be mentioned that in the variant of the articulator plate (5) shown here, the circular edge (12) is broken (24) in order to give the user the opportunity to check the position of the model plate (11) on the articulator plate (5).

Figure 6 shows section B of Figure 4 and here too the explanations of Figure 4 can be used. Here, only the detailed illustration shows how the connection to the articulator (1) can be established conventionally using threads (20) and recesses (21, 22).

Claims (22)

• t ttft · · *· ·· CLAIMS 1. Plate set for synchronizing different articulators, characterized, that the plate set consists of an articulator plate (5) and a model plate (11), which are manufactured in such a way that a crosswise exchange of the model plate (11) on the articulator plates (5) is possible, whereby the articulator plate (5) with the respective articulator arm (1) is connected (2) such that the hold between the articulator plate (5) and the model plate (11) is achieved via at least one magnet (7, 16, 23) and/or mechanically, while the connection to the jaw model base (15) is ensured via retention elements (14). 2. Plate set according to claim 1, characterized in that the articulator plate (5) is connected in a conventional manner to the respective articulator arm (1) (2) is. 3. Plate set according to claim 1,2, characterized in that the connection of the articulator plate (5) to the respective articulator arm (1) is made, for example, via at least one articulator-specific retention element and at least one undercut (25) of the articulator plate (5). 4. Plate set according to at least one of claims 1-3, characterized, that the articulator plate (5) has a symmetrically designed orientation on the articulator arm (1) and preferably has a circular and beveled, high-precision manufactured border (12) which corresponds exactly with the recess border (13) of the model plates (11) even when the model plate (11) is moved crosswise or enables this exact movement in the first place. 5. Plate set according to at least one of claims 1-4, characterized,
that in a preferred embodiment the articulator plate (5) has a removable magnet (7,8,16). 6. Plate set according to at least one of claims 1-5, characterized, that the model plate (11) contains a ferromagnetic element (10) which secures the hold with the magnet (7,16,23) of the articulator plate (5). 7. Plate set according to at least one of claims 1-6, characterized, that the articulator plate (5) preferably has a milling edge (24) offset from the preferred inclined portion (12) or the like, which clarifies the transition to a differently designed peripheral milling (26). * φ 8. Plate set according to at least one of claims 1-7, characterized, that the articulator plate (5) is manufactured with the highest precision, whereby, for example, conical elevations correspond with corresponding recesses in the model plate (11) and allow the so-called control base method. 9. Plate set according to at least one of claims 1-8, characterized, that the circular edge (12) of the articulator plate (5) and the corresponding edge (13) of the model plate (11) are suitable, thanks to their precise manufacture, for making the control base method feasible. 10. Plate set according to at least one of claims 1-9, characterized, that the model plate (11) has at least one retention element (14) which is suitable for securely holding the jaw model with its model base (15). 11. Plate set according to at least one of claims 1-10, characterized, that the retention element(s) (14) is/are suitable for receiving, for example via at least one screw connection (27, 33) or the like, a retention cap (19) or the like, which remains in the jaw model or its model base (15) and which allows the jaw model to be removed from the model plate (11) before transport. 12. Plate set according to at least one of claims 1-11, characterized, that the precision of the plate elements (5,11) is preferably ensured by grinding and/or high-precision milling. 13. Plate set according to at least one of claims 1-12, characterized, that the connection of the plate elements (5,11) is preferably ensured by at least two dowel pins, so-called pins or similar elements such as screws or the like. 14. Plate set according to at least one of claims 1-13, characterized, that the model plate (11) has elevations that correspond to corresponding recesses in the articulator plate (5) and ensure the possibility of the control base method. 15. Plate set according to at least one of claims 1-14, characterized, that the articulator plate (5) is preferably made of high-precision metal. 16. Plate set according to at least one of claims 1-15, characterized, that the model plate (11) is also made of metal with high precision. 17. Plate set according to at least one of claims 1-16, characterized, that the model plate (11) is made of a preferably thermoplastic material that corresponds exactly with the articulator plate (5) and enables the control base method, as well as being suitable for holding the model base (15) or the jaw model. 18. Plate set according to at least one of claims 1-17, characterized, that both the articulator plate (5) and the model plate (11) are made of plastic. 19. Plate set according to at least one of claims 1-18, characterized by that a thermoplastic and/or a thermosetting plastic is used as the plastic, each of which can preferably be machined precisely. 20. Plate set according to at least one of claims 1-19, characterized, that both the articulator plate (5) and the model plate (11) have plastic and metal elements that fit together precisely. 21. Plate set according to at least one of claims 1-20, characterized, that the model plate (11) has elevations (18) on the circumference (29) which ensure a secure position of the detached plate (11), preferably with jaw model. · · ·■ 22. Plate set according to at least one of claims 1-21, characterized in that the model plate (11) has at least one additional contour on the model side, which is reflected in the model base (15).