JPH059102B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is used for manufacturing complete dentures, local dentures, bridge dentures, etc. in dental training, clinical practice, training, etc. This invention relates to improvements in reconfigurable and adjustable articulators.

Such articulators include a mandibular frame that is placed on a fixed surface and an upper jaw frame that is rotatably attached to the mandibular frame. For various reasons, for example, when manufacturing a complete denture model, it is preferable that the upper and lower jaw frames be separable in order to attach the models to the upper and lower jaw frames, respectively. Conventionally, this separation operation was troublesome.

An object of the present invention is to provide an articulator that allows easy separation of an upper jaw frame and a lower jaw frame.

To that end, the present invention provides a mandibular frame adapted to rest on a fixed surface, a pair of spaced apart upright posts secured on the mandibular frame, and a pair of upright posts mounted at the top of each upright post. a maxillary frame rotatably mounted on the upright column via a condylar bulb block, the maxillary frame supporting the condylar bulbs respectively supported in the condylar bulb blocks; An anatomically adjustable articulator with an end, in which the condylar sphere block is in the form of a semicircular ring open upwards and whose lower part is mounted on the top of a corresponding upright post; and a cylindrical sagittal condylar body having a circumference slidably received in the support and including a radial slot extending from the circumference to the center, into which the condylar bulb is inserted. a sagittal condylar tract body adapted to be rotatably received; a sagittal condylar tract body fixing device for fixing the sagittal condyle tract body at a desired position; and a sagittal condyle tract body adapted to be rotatably received; Provided is an anatomically adjustable articulator characterized in that it includes a condylar bulb fixing device for fixing the condylar bulb to the condylar bulb.

Furthermore, in conventional articulators, a stopper device is provided to keep the maxillary frame in a predetermined position when the maxillary frame is rotated from the mandibular frame, but this stopper device is not fixed. Yes, it cannot be adjusted.

Another object of the invention is to provide an articulator with an adjustable stopper device capable of stopping the upper jaw frame in a desired position.

To that end, the present invention provides a mandibular frame adapted to rest on a fixed surface, a pair of spaced apart upright posts secured on the mandibular frame, and a pair of upright posts mounted at the top of each upright post. a maxillary frame rotatably mounted on the top of the upright post via a condylar bulb block, the maxillary frame supporting the condylar bulbs respectively supported within the condylar bulb blocks; an anatomical adjustable articulator having an end, at least one of the upright posts having a stop projecting from a side thereof, when the maxillary frame is rotated about the condylar bulb block; An anatomically adjustable bite, characterized in that an engaging body provided at the rear end of the maxillary frame engages with the stopper, and the position of the engaging body can be adjusted. Provide an exchanger.

Hereinafter, the present invention will be explained by way of examples with reference to the accompanying drawings.

With reference to the drawings, particularly figures 1 to 4,
The articulator consists of a mandibular frame 1 that is placed on a fixed surface, a pair of upright posts 2 that are fixed to the rear end of the mandibular frame 1 at a distance from each other, and a condyle that is attached to the top of each post. It includes head blocks 3 and an maxillary frame 4 whose rear end is supported by these condylar blocks 3.

The lower jaw frame 1 has an incisor guide plate 5 at its front end, which cooperates with an incisor guide rod 6 at the front end of the upper jaw frame 4. In the middle of mandibular frame 1,
A mounting plate 7 is provided for mounting a model of the lower jaw. The role of these incisor guide plates and incisor guide rods is well known in the art and is not relevant to the present invention, so they will not be further described here.

The condylar block 3 mounted on the top of each post 2 of the mandibular frame 1 includes a support 10 in the form of a semicircular ring. Although not shown in the drawings, this support has a shaft inserted into an axial hole provided in the end face of the corresponding column 2, so that it can rotate about the axis of the column. The column 2 is provided with a fixing screw 11 that can fix the support 10 in a desired position.

As best seen in Figures 8 and 9,
Each support column 10 includes an arcuate main body 12 and side plates 14 fixed to both sides of the main body with setscrews 13 (FIG. 5) or the like. Each side plate 14 has a radial dimension slightly larger than that of the main body,
An arc-shaped groove 15 along with the inner surface of the main body 12 (FIG. 9)
is formed. A cylindrical sagittal condylar body 16 is mounted within this groove 15 . The outer periphery of the sagittal condylar body 16 is slidable within the groove 15 described above.
That is, it can rotate around its axis. As shown in FIG. 8, a slot 17 extends through the main body 12 of the support column 10 from its outer peripheral surface to its inner peripheral surface, and a fixing screw 18 is inserted through the slot 17.
is screwed into a screw hole 19 provided in the sagittal condylar body 16, so that the sagittal condylar body 16 can be fixed to the strut body 10. Although not related to the present invention and will not be described in detail, the sagittal condyle tract body 1
A sagittal condylar track scale 20 is provided on the lateral surface of the sagittal condylar track body 16 in order to know the position of the sagittal condylar track body 16 relative to the strut body 10. Moreover, if rollers are arranged on the sliding surfaces of the condylar road body 16 and the strut body 10, the movement of the condylar road body 16 relative to the strut body 10 will be made even smoother.

Each condyle tract body 16 further has a slot 21 that opens on its outer peripheral surface and side surface and extends to its center, and this slot 21 has an arcuate groove 22 on the side surface.
(best seen in FIG. 5) is provided to rotatably receive a condylar bulb provided at the side end of the rear end portion 23 of the maxillary frame 4, as will be described later.

The rear end portion 23 of the maxillary frame 4 has a substantially cylindrical shape, and the condylar axis 2 extends from each side end in the axial direction.
4 protrudes, and the condylar bulb 24A is attached to this condylar axis.
is attached so that it can rotate freely. These condylar bulbs 24
When A is inserted into the radial slot 21 of the corresponding sagittal condyle tract body 16 through its outer peripheral opening, the maxillary frame 4 rotates away from the mandibular frame 1 about the center of the sagittal condyle tract body 16. I can do it. As shown in FIGS. 8 and 9, the sagittal condyle tract body 16 is provided with a radial screw hole 25 (FIGS. 8 and 9) extending from its outer peripheral surface to its inner peripheral surface. A fixing screw 26 is screwed into the hole 25, and when the fixing screw is advanced inward and its inner end engages with the condylar bulb 24A, the condylar bulb 24A is fixed. In this way, the upper jaw frame 4 can be simply and easily attached to the top of the strut of the lower jaw frame 1.

A rod-shaped stopper 28 is provided on the mutually facing side surfaces of each support column 2 of the mandibular frame 1 and projects at right angles therefrom. Engagement rods 29 are provided adjacent to the inner side of both ends of the cylindrical rear end portion 23 of the upper jaw frame 4 and protrude outward in the radial direction. When the upper jaw frame 4 is rotated away from the lower jaw frame 1, these engaging rods 29 are adapted to engage with the corresponding stoppers 28, respectively. Each engagement rod 29 is fixed to a ring 30 attached to the rear end 23 of the upper jaw frame 4 so as to be rotatable around its axis.
can be fixed in the desired position by means of a hexagonal socket head screw 31 (see especially FIG. 5). Therefore, the upper jaw frame 4 can be rotated to a desired opening position with respect to the lower jaw frame, making the denture prosthesis work easier.

The maxillary frame 4 has the above-mentioned incisor guide rod 6 attached to its front end, and a mounting plate 34 for attaching a model of the maxilla is provided in the middle part thereof. Since these components are not relevant to the present invention, they will not be described in detail here.

As is clear from the above, in the articulator according to the present invention, the maxillary frame can be easily and easily attached to and removed from the mandibular frame, and the maxillary frame can be positioned at a desired position relative to the mandibular frame according to the work content. It can be rotated and stopped there.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an articulator according to the present invention. FIG. 2 is a front view of the articulator of FIG. 1. FIG. 3 is a rear view of the articulator of FIG. 1. FIG. 4 is a side view of the articulator of FIG. 1. Figure 5 shows the first
It is a fragmentary enlarged perspective view which shows the connection part of the upper and lower jaw frames of the articulator shown in FIGS. 2, 3, and 4. FIG. 6 is a view similar to FIG. 1, showing the maxillary frame of the articulator in a rotated position. FIG. 7 is a rear view of FIG. 6. FIG. 8 is a sectional view taken along the - line in FIG. 3. FIG. 9 is a sectional view taken along the - line in FIG. 4. In the drawings, 1...mandibular frame, 2...post, 3...condylar block, 4...maxillary frame,
5... Incisor guide board, 6... Incisor guide rod, 10...
Support body, 11...Fixing screw, 14...Side plate, 16
...sagittal condyle tract body, 17...slot, 18...fixing screw, 21...slot, 24...condylar axis, 2
4A...Condylar bulb, 26...Fixing screw, 28...Stopper, 29...Engagement rod, 30...Rotating ring,
31...Hex socket head screw.

Claims (1)

[Claims] 1 a mandibular frame adapted to rest on a fixed surface and fixed on the mandibular frame;
The maxillary frame includes a pair of spaced apart upright posts and a maxillary frame rotatably mounted on the top of each upright post via a condylar bulb block mounted on the top of each upright post. an anatomically adjustable articulator having a rear end supporting condylar bulbs each supported within the condylar bulb block, wherein at least one of the upright posts has a stop projecting from a side thereof; When the maxillary frame rotates about the condylar bulb block, an engaging body provided at the rear end of the maxillary frame engages with the stopper, and this engaging body adjusts the position. An anatomically adjustable articulator characterized in that it is adjustable.