DE9214267U1 - Dental articulator - Google Patents

Description

• *1

Dental articulators as denture simulators are known as so-called Arcon or non-Arcon articulators.

In addition to the joint path inclination, most mean value articulators and in particular the fully programmable articulators have the option of adjusting the Bennett angle, which is done in very different ways for the various articulator types.

Only in non-Arcon articulators is this implemented almost uniformly and, given the current state of the art, requires a separate condylar box element, which is machined using milling and turning technology and ultimately requires an additional intervention in the condylar column in the form of a hole and a fixation screw receptacle.

In particular, if the joint path inclination can also be changed, a rotatable and fixable additional element is required, which requires additional turning, drilling and/or milling work.

It is therefore obvious that the devices are expensive to manufacture , so that many laboratories prefer cheap articulators with a fixed Bennett angle and a fixed articular path inclination for investment reasons, not exactly for the benefit of the patient.

The object of the invention is therefore to modify the articulator in the area of the condylar column so that the entire device can ultimately be offered at a significantly better price-performance ratio in line with the market.

Of course, the enormous price-reducing advantages of aluminum and/or zinc die-casting should be used, so that only rework is required.

The invention will now be explained in more detail with reference to claims 1-3 and the description of figures 1 and 2.

This shows

Figure 1 shows a modified condylar guide element schematically with a detailed view of a condylar column,

Figure 2 schematically illustrates the possibility of

to program a defined side shift.

Figure 1 shows a schematic of a modified condylar guide element (30) with a detailed view of a condylar column adapted to it.

The condylar guide element (30) is designed as a spherical segment (32) that is parallel on both sides and flattened with the center point (23') of the entire sphere. The hinge axis (22) is surrounded by the condyle (7), which is locked in the center by the preferably screw element (36), whereby the condyle (7) can be prevented from sliding out of the condylar path here by the symbolized screw (21). It is particularly noteworthy that the condylar guide element (30) in the segment (40) is slotted (33,40) in the center of the surface as a circular segment and perpendicular to it around the imaginary center point (22). The condylar column (31) includes a precisely fitting (42) bolt element (35), which engages in the upper part through the slot (40) and is preferably secured by the rolling element (41), which engages through the slot (53) and through the bolt (35) (39). .. ..

At the same time, it is noteworthy in this variant that the condylar column (31) has a negative spherical cap (42) for the spherical cap (32), which corresponds exactly to (32), whereby the peripheral milling (38) of the bolt (35) and the screw element (37) enable the movement of the condylar guide element (30) or its locking.

Figure 2 shows a schematic of the possibility of a programmable immediate side shift. The hinge axis is preferably milled in the middle at an angle of 90° (46), whereby the bolt (47) engages under spring tension (48) and fixes the shaft when the screw (49) is tightened. A defined side shift can be set by releasing the screw (49) with a pitch of 1 mm.

Claims (3)

EXPECTATIONS 1. Dental articulator,
characterized, the condyle guide elements (30) for the condyle column (31) are manufactured as a spherical segment (32), the center point (23') of the solid sphere lying on the hinge axis (22), that it is slotted (33,34) in a defined segment (40) in the plane (34) and in the same segment perpendicular (33) thereto around the sphere center point (23'), that the spherical segment (32) corresponds to the negative spherical segment (42) of the same radius of the condyle column (31), that a bolt element (35) of the respective condyle column (31) runs or preferably rolls (40) in the slots (33,34) and that a fixation screw (37) enables the condyle guide element (30) to be pressed onto the condyle column (31) via a circumferential milling (38) of the bolt element (35). 2. Dental articulator according to claim 1, characterized in that the bolt element (35) is inserted into the condylar column (31) to fit (42), has a transverse bore (39) in the slot area (33, 34) for the guide element (30) to accommodate a bolt-like rolling element (40) and that the peripheral milling (38) is preferably negatively conical, whereby the fixation screw (37) engages eccentrically and is suitable for pressing the condylar guide element (30) onto the condylar column (31). 3. Dental articulator according to claim 1,2, characterized in that a defined immediate side shift can be programmed using the modified hinge axis (22) with its peripheral milling (46) via the spring-loaded (48) bolt (47) and screw (49).