DE9307951U1 - Kit for transferring the correct jaw model into an articulator - Google Patents

Description

Transfer arches are available as exact transfer arches according to hinge axis localization or as quick transfer arches. Their basic task is to transfer the patient's jaw position in a spatially analogous manner into a dental dental simulator or articulator.

Given the high time pressure that practitioners are under, it is often unavoidable that the work of installing the model is left to the laboratory, which raises the problem of transport and the lack of a facebow in the dental practice for other patient cases. This could be avoided by increasing the investment, although it should be noted that the highly sensitive equipment can be damaged during transport and even lost.

Under ideal conditions, a facebow would be considered that works arbitrarily or precisely and allows the possibility of leaving the facebow in the practice or laboratory with an exchangeable bite plate via data transfer.

The same applicant has already filed a similar application, patent application P 42 41 195.5, which, however, appears to be too complex in its design.

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Under these conditions, a new facebow is presented that allows the inclusion of a replaceable bite plate that is filled with an appropriate carrier medium and placed on the patient's teeth. In this variant, the bite frame itself has an extension with a negative ball segment in the anterior part.

The facebow is similar in many respects to the above application, but here a sagittally movable guide part makes it possible to position a ball-bolt mechanism so that the ball engages flush and vertically in the previously described ball cap, whereby the bite part is then rigidly fixed to the bow mechanism via the ball-bolt device with an adapted facebow, if necessary with glabella support and ear olives or on the other side as an exact facebow.

With the possibility of the ball being equipped with length and width angle markings and providing a readable value with a marking point on the negative spherical cap, as well as with the possibility of the bolt being determinable in its position and length, the laboratory is given the opportunity to adjust an identical facebow through the corresponding data transfer and by handing over the bite plate so that it corresponds to the original situation of the facebow on the patient. This solves the problems mentioned above.

The invention will now be explained in more detail with reference to kit claims 1-10 and figures 1 and 2.

Show

Figure 1 schematically shows both a possible

Variant of an arbitrary and a facebow for the exact hinge axis localization,

Figure 2 shows a detailed drawing of the connection of the facebow with the bite mechanism.

Figure 1 shows schematically in the same image both a possible variant of an arbitrary facebow on the right side, while on the left a facebow is shown which in this form is suitable for precisely moving the hinge axis and thus adjusting the jaw model more precisely in the denture simulator.

What is particularly noteworthy in both variants is the exchangeable bite plate (1), which is mounted in the guide frame (2), which forms a solid unit with the negative spherical cap (3). In the view on the right, it can be seen that this is an arbitrary facebow with the ear olive (4), which is connected to the side arm (6) of the arbitrary facebow via a pin (5).

This engages with its cross arm part (7) in the guide housing (8) and is mutually connected to the opposite side via the gear wheel (9) and the rack connections (10, 11) in such a way that a symmetrical movement of the arch is possible, which can ultimately be fixed in this position via the fixing screw (12). The fixing screw (12) also serves to fix the extension part (13) of the ball-bolt holder (20), whereby the ball (15) is pulled onto the extension element (13) by the bolt element (16) and knurled screw (17), visible here, whereby the extension element (13) runs in the guides (18) with its recess (19) on the top of the guide housing (8) so that it can be moved and its values can be read off here.

The recesses (20,9) for the ball bolt (15,16) make it possible to always position the ball (15) in such a way that the bite plate (1) rests against the patient's rows of teeth and at the same time the ear olives (4) are positioned in the patient's ear canals. A glabella support has not been shown in this illustration. On the left side, the face bow is suitable for moving to an exactly localized hinge axis point, in that the side arm (22) can be extended, for example, by means of a screw element (23) over the parting line (24), whereby the screw element (25) on the support (26) via the rotation center (27) enables an angle adjustment and finally whereby the marking needle (28) with its locking option (29) moves exactly to the hinge axis.

Figure 2 shows a schematic side view of the ball-spherical cap connection of the guide housing (8) with the bite element (1,2). We can see that the ball-bolt element (15,16) creates a rigid connection with the ball (15), which is mounted in the spherical cap (3), through the screw elements (17,21,30.30'). The washer (31) serves to securely fix the spherical cap (3) to the screw (21) with its rounded section (32) which is preferred here.

In both Figure 1 and Figure 2, there are no corresponding scales or markings for reading the spatial position.

Claims (10)

EXPECTATIONS 1. Kit for transferring a jaw model in the correct position into an articulator, the transfer bow consisting of a bow mechanism (6,7,8,22) with ear olives (4,5) and/or a bilateral needle mechanism (28,29) and, if necessary, a glabella support, characterized in that that an exchangeable bite plate (1) can be received and fixed in a guide (2), that this guide (2) can be coupled to a connecting mechanism after the actual transfer arch (6,7,8,22) has been attached, so that a fixed connection is created, whereby at the same time values can be read that allow a laboratory to adjust an identical transfer arch with the sent bite plate (1) covered with tooth impression material in such a way that a matching relationship to the original situation in the dentist's office can be established. 2. Kit according to claim 1,
characterized, that the bite plate (1) has retention elements such as perforations or the like, which are suitable for receiving an impression carrier medium. 3. Kit according to at least one of claims 1, 2, characterized in that the replaceable bite plate (1) is suitable for being securely guided in a frame (guide) (2). 4. Kit according to at least one of claims 1-3, characterized in that the bite plate holder (2) has, for example, an anterior negative spherical cap (3) which is suitable for receiving a sagittally movable element (16, 15), which in turn can be aligned in its front part, preferably in a guide element (13, 14), on the spherical cap (3) and thus the entire arch can be fixed (12, 17, 30, 21). 5. Kit according to at least one of claims 1-4, characterized in that the pin mechanism can be locked at 90° to the transverse groove guide (20) in the specified length so that its frontal position can be determined, that the sagittal guide position can be read at the same time and that it has a ball (15)-bolt (16) mechanism at the end which can correspond to and be fixed with a corresponding negative ball cap (3) of the bite plate frame (2). 6. Kit according to at least one of claims 1-5, characterized in that the ball (15) preferably has longitude and latitude angle markings. 7. Kit according to at least one of claims 1-6, characterized in that the negative ball holder (3) of the bite plate frame (2) has corresponding markings that are suitable for reading the spatial position of the ball (15). 8. Kit according to at least one of claims 1-7, characterized in that in an arbitrary quick transfer bow with ear olives (4,5), a symmetrical opening and closing movement is ensured preferably by anteriorly arranged racks (33,34) with, for example, a centrally arranged gear wheel (9), wherein sagittally arranged guides (35) are provided for the racks (33,34). 9. Kit according to at least one of claims 1-8, characterized in that the vertically displaceable and lockable ball bolt (15,16) is arranged in front of or behind the gear guide of the quick transfer arch. 10. Kit according to at least one of claims 1-9, characterized in that when using the transfer sheet with the possibility of approaching the exact hinge axis points, the side arms (22) are preferably designed to be rotatable (27) and adjustable (23,25) as well as length-adjustable (23,24) and also adjustable (23), whereby corresponding angle displays or length markings are necessary for the data transfer.