JPH0513413U - Articulator - Google Patents

Abstract

(57) [Summary] [Purpose] The actual positional relationship between the patient's upper and lower jaws and the center of the upper and lower jaw opening and closing movements is changed or specified outside the oral cavity. An upper jaw base plate mounting frame 3 slidably supported on a support member 2, an upper jaw base plate 4 mounted on the mounting frame 3, and a supporting frame 5 are slidably supported. An articulator 1 comprising a lower jaw base plate mounting frame 6, a lower jaw base plate 7 attached to the mounting frame 6, and a support shaft 8 rotatably connecting the support member 2 to the support frame 5. [Effect] The position of each of the upper and lower base mounting frames can be moved with respect to the support shaft functioning as a pseudo joint, and thus the position of the center of the opening and closing movements of the upper and lower jaws can be changed according to the operator's discretion. You can

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an articulator used for producing dental products such as upper and lower jaw teeth of dental patients, dental prostheses, and orthodontic appliances, and more particularly, an upper jaw base plate mounting frame and a lower jaw base plate mounting frame. The present invention relates to a dental articulator having a structure that enables movement of each frame.

[0002]

[Prior Art]

 A conventional articulator 61 as shown in FIG. 8 is a wax bite of upper and lower jaw plaster models (not shown) on base plates 64 and 65 provided on base plate mounting frames 62 and 63 of the articulator. The occlusal relationship marked on each was attached to each, and the occlusal state of the upper and lower jaws was reproduced on the articulator. Furthermore, in the above-mentioned conventional articulator, the static and dynamic positional relationship of the upper and lower jaws, which seems to be appropriate in the oral cavity, is occlusally acquired by the check bite method, etc. By adjusting each function, the three-dimensional movement of the lower jaw was reproduced outside the oral cavity, that is, on the articulator.

[0003]

[Problems to be solved by the device]

 However, with the conventional articulator, although it is possible to reproduce the three-dimensional motion in the contact state of the upper and lower tooth models with high precision, it is possible to change the occlusal height on the articulator. Was not noted. That is, what is important when changing the occlusal height on the articulator is that the distance between the center of the upper and lower jaw models and the upper and lower jaw models is the distance between the upper and lower jaws and their opening and closing movements in the living body. If the occlusal height is changed, even if the prosthesis is made so that all teeth make occlusal contact on the articulator, Inside, the same occlusal contact state as on the articulator cannot be obtained. Therefore, in a conventional articulator that does not have a device capable of finely adjusting the distance between the upper and lower jaw models and the pseudo joint as in the present invention, it is considered that the occlusal height is changed on the articulator. If the occlusal height is actually changed, the occlusal sampling should be done again in the patient's mouth, and then the upper and lower jaw model should be attached to the articulator. Then the method was adopted. However, this method requires a great deal of work, such as having to perform occlusal sampling again in the oral cavity of the patient, and thus imposes considerable annoyance and burden on the patient.

Further, assuming that the center of the opening and closing movements of the upper and lower jaws of the living body is located on the axis that connects the centers of the joint heads in the left and right temporomandibular joints, the distance between the upper and lower jaws and the temporomandibular joint is determined by the face stick. A method was also attempted to measure on the articulator so as to match it, but in practice, when changing the occlusal height, the method described above was also used. The method of starting over from occlusal acquisition is adopted.

[0005]

[Means for Solving the Problems]

 The present invention can change the distance relationship even after the upper and lower jaw models are mounted on the articulator, as long as the center position of the human upper and lower jaw opening and closing movements can be accurately estimated by model observation and living body observation. The purpose of the present invention is to provide a simple articulator, and even if the position of the center of the human upper and lower jaw opening and closing movements cannot be accurately estimated, By using an articulator equipped with a device that can change the position, it is possible to create several kinds of prostheses with thought and error and to define the center position of the opening and closing movements of the upper and lower jaws that match the living body. To do. Furthermore, if it is diagnosed that the center of jaw opening / closing movement of a living body is inappropriate for the living body, it is possible to make a prosthesis in which the position of the center of jaw opening / closing movement is positively changed. The purpose was to provide such an articulator.

That is, the gist of the present invention is to provide a support member, an upper jaw base plate attachment frame slidably supported with respect to the support member, and an upper jaw base plate attached to the upper jaw base plate attachment frame. Plate, support frame, lower jaw base plate mounting frame slidably supported on the support frame, lower jaw base plate mounted on the lower jaw base plate mounting frame, and the support member for the support frame. An articulator having a support shaft that is rotatably connected and that functions as a pseudo temporomandibular joint, and a slide member on which the maxillary base plate is slidably attached along the longitudinal direction of the maxillary base plate attachment frame. And the lower jaw base plate further comprises a slide member mounted slidably along the longitudinal direction of the lower jaw base plate mounting frame.

[0007]

[Action]

 With the above configuration, when changing the occlusal height on the articulator, the center position of the opening and closing movements of the upper and lower jaws can be easily changed to a desired position according to the operator's intention.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

(1) Configuration of Articulator of the Present Invention (No. 1 ) FIG. 1 is an overall perspective view of the articulator of the present invention, in which the articulator 1 of the present invention has a support member 2 and a support member 2. Base plate mounting frame 3 slidably supported by the user, upper base plate 4 mounted on the mounting frame 3, support frame 5, and lower jaw base plate mounting slidably supported by the support frame 5. A support shaft (retaining screw) 8 that functions as a pseudo joint by rotatably connecting the support member 2 to the frame 6, the mandibular base plate 7 attached to the attachment frame 6, and the support frame 5, At the time (that is, in the meshed state), the tip of the pin comes into contact with the cutting tooth pin receiving seat 9 provided at the tip of the mounting frame 6, and it can slide up and down with respect to the mounting frame 3 and is mounted with the retaining screw 10. It consists of an incisor pin 11 fixed to the frame 3. The support member 2 and the support frame 5 can be connected and separated from each other by tightening or loosening a fastening screw that constitutes the support shaft 8 which is the center of the opening / closing movement between the mounting frame 3 and the mounting frame 6. . It should be noted that the support shaft 8 can be replaced by a retaining screw that penetrates the support frame 5 shown in FIG. 3 (c) and is screwed to the support member 2, or a structure that functions as a so-called pseudo joint. is there.

As shown in FIG. 1, the mounting frame 3 is rotatably connected to the mounting frame 6 by a support shaft 8 functioning as a pseudo temporomandibular joint. As shown in FIG. 3C, which is an enlarged cross-sectional view, the structure is such that it can be connected to the support member 2 by tightening the fastening screw 24. Further, on the side surface of the mounting frame 3 which is inserted into the support member 2, graduations 12 are engraved at appropriate intervals over an appropriate length in the longitudinal direction of the attachment frame 3. Similarly, graduations 12a are engraved on the side surface of the mounting frame 6 that is inserted into the support frame 5 at appropriate intervals in the longitudinal direction of the mounting frame 6 for an appropriate length. Further, the cutting tooth pin 11 is provided in the vicinity of the front end of the mounting frame 3.

As shown in FIG. 3A, which is an enlarged cross-sectional view taken along line AA of FIG. 1, the base plate 4 is an upper jaw model fixing base having a substantially U-shaped cross section that is slidable along the base plate 4. It is covered by 13 so as to cover the surrounding area. A screw hole 14 and a set screw 15 screwed into the hole 14 are provided on the upper side surface of the fixed base 13, and the base plate 4 and the fixed base 13 are connected to each other by tightening the set screw 15. In addition, the bottom surface 13a of the fixed base 13 is provided with a plurality of protrusions 16 so as to ensure the stability of the jaw model when the plaster model is mounted, and a magnet is provided at the center of the bottom surface part 13a. 17 are buried. Due to such a structure, adjustment of the space (height) with respect to the lower jaw plaster model 19 attached to the fixing base 13 can be performed by sliding the fixing base 13 up and down along the base plate 4 to an appropriate position. This can be done by tightening the retaining screw 15 with (See Fig. 2).

On the other hand, when the mounting frame 6 is used on a desk such as a workbench, the hemisphere is formed on the bottom surface of the mounting frame 6 so that the articulator 1 can be stably placed and the mounting frame 6 can slide smoothly. The spacers 6a are connected in series, and as shown in FIG. 3 (c), they can be connected to the support frame 5 by tightening the fastening screws 25. Further, a receiving seat 9 for the cutting tooth pin 11 is provided near the tip of the upper surface of the mounting frame 6.

In addition, as shown in FIG. 3 (b) which is an enlarged cross-sectional view taken along the line BB of FIG. 1, the base plate 7 is a mandibular model with a substantially U-shaped cross section that is slidable along the base plate 7. The fixed base 20 is installed so as to cover the periphery. A screw hole 21 and a set screw 22 screwed into the hole 21 are provided on a lower side surface of the fixed base 20, and the base plate 7 and the fixed base 20 are connected to each other by tightening the set screw 22. .. In addition, a plurality of protrusions 16 are provided on the upper surface portion 20a of the fixed base 20 to ensure the stability of the jaw model when a plaster model is placed, and the central portion of the upper surface portion 20a is provided. The magnet 23 is embedded. Due to such a structure, the space (height) of the mandibular plaster model 19 placed on the fixed table 20 relative to the upper plaster model 18 can be adjusted by sliding the fixed table 20 along the base plate 7 to an appropriate position. This can be done by tightening the retaining screw 22 with (See Fig. 2).

FIG. 4 is an overall perspective view showing an articulator 31 according to another embodiment of the present invention, in which an upper jaw base plate mounting frame 32 and a lower jaw base plate mounting frame 33 are each branched into two, and a supporting member is provided. 2 is substantially the same as the structure of the articulator 1 shown in FIG. 1 except that the structure is supported by the support frame 5.

(2) Configuration of Articulator of the Present Invention ( Part 2 ) In FIG. 5, the base plate 4 and the base plate 7 of the articulator 1 shown in FIG. 1 are the upper jaw, the base plate slide member 43 and the lower jaw, respectively. The whole perspective view of the articulator 41 of the other embodiment of this invention which was equipped with the slide member 44 for base plates was shown.

That is, as shown in FIG. 6A, which is an enlarged cross-sectional view taken along line DD of FIG. 5, the attachment frame 3 of the articulator 41 is externally covered by the slide member 43 so as to cover the periphery thereof. The slide member 43 has a structure capable of sliding in the longitudinal direction of the mounting frame 3. Further, a screw hole 43a is formed in the upper surface of the slide member 43 so as to penetrate therethrough, and a fastening screw 42 is screwed into the screw hole 43a. By tightening the screw 42, the slide member 43, that is, the base plate 4 is attached to the mounting frame 3. It can be fixed at any position. The reading point 43c for indicating the position of the slide member 43 corresponds to the scale 12 engraved on the side surface of the mounting frame 3 through the window 43b provided on the side surface of the slide member 43. It is engraved on the side.

Further, as shown in FIGS. 5 and 6 (b), a lower jaw base plate 7 composed of a lower slide member 46 and a lower jaw model fixing base 20 is attached to both sides of the mounting frame 6. Grooves 44, 44 for sliding the slide member 46 are provided in the slide member 46 so that the slide member 46 can slide for an appropriate length in the longitudinal direction, and scales 12a are formed below the groove 44 in parallel with the groove 44 at appropriate intervals. ing.

Further, a receiving seat 9 for the cutting tooth pin 11 is attached near the tip of the upper surface of the mounting frame 6.

Further, as shown in FIG. 6B which is an enlarged cross-sectional view taken along line EE of FIG. 5, the mounting frame 6 faces inward in the vicinity of both lower end portions of the slide member 46 having a substantially U-shaped cross section. The projecting portions 44a, 44a projecting from the ridges are mounted so as to fit in the grooves 44, 44 provided in the mounting frame 6, respectively, and the slide member 46 allows the mounting frame 6 to slide in the longitudinal direction. .. Further, a screw hole 47 is formed through one side surface of the slide member 46, and a fastening screw 45 is screwed into the screw hole 47. By tightening the screw 45, the slide member 46 can be mounted at any position on the mounting frame 6. Can be fixed at. In addition, a reading point (not shown) for indicating the position of the slide member 46 is provided on the side surface of the slide member 46 on the side surface of the slide member 46 in correspondence with the scale 12a engraved on the side surface of the mounting frame 6. It is carved.

FIG. 7 is an overall perspective view showing an articulator 51 according to another embodiment of the present invention, in which the upper and lower base plate mounting frames 52 and the lower jaw base plate mounting frame 53 each have a bifurcated structure. Other than that, the configuration is substantially the same as that of the articulator 41 shown in FIG.

(3) Mode of Use of Articulator of the Present Invention A mode of use of the articulator of the present invention will be described with reference to FIG.

Attaching the Upper and Lower Jaw Models to the Articulator First, a wax bite is placed between the upper and lower jaws of the patient, and the upper and lower jaws are occluded for occlusal sampling. Insert the wax bite obtained by occlusal measurement between the upper and lower jaw models, and tie and fix the upper and lower jaw models with a thin wire thread in order to maintain the anti-bite (occlusal) relationship of the upper and lower jaw models. , The upper and lower jaws should be integrated.

Next, a metal plate 26 is placed on the magnet 23 embedded in the lower jaw model fixing base 20, an appropriate amount of gypsum mud is placed on the plate 26, and undried for connecting the model and the fixing base. The plaster pedestal, that is, the plaster 29 for wearing, that is, the plaster 29 on which the upper and lower jaws are integrated, is taken into consideration while considering the orientation and inclination of the upper and lower jaw models while the plaster 29 is not dry. Put on.

Then, while the metal plate 27 is attracted to the magnet 17 embedded in the upper jaw model fixing base 13, an appropriate amount of gypsum mud is placed on the upper surface of the upper jaw model 18 to form a plaster 28 for mounting, and an incisor pin. 11 is brought into contact with the seat 9, that is, the undried plaster 29 for attachment is pressed and dried, and the work of attaching the upper and lower jaw models to the articulator is completed.

Position Adjustment of the Upper and Lower Jaw Model on the Articulator When the attachment of the upper and lower jaw model to the articulator is completed, the operator observes the patient's jaw movement and the prepared jaw model, and The distance between the appropriate jaw model and the pseudo joint is changed by sliding the attachment frames 3 and 6, respectively, and the distances between the upper and lower jaws of the living body and the center of the opening / closing movement are matched. At the position where the sliding is completed, tighten the screws 24 and 25 respectively, and fix the upper and lower jaw model mounting positions.

Using the upper and lower jaw models mounted on the articulator through the above steps and steps, a dental preservation product, a dental prosthesis, and a dental product such as an orthodontic appliance are manufactured.

[0027]

[Effect of the device]

 With the present invention, the positions of the upper and lower base mounting frames can be moved with respect to the support shafts that function as pseudo joints, so that the distance relationship between the human upper and lower jaws and the center of the opening and closing movements of the upper and lower jaws is reproduced. Therefore, it is possible to change the occlusal height diameter on the articulator that matches the living body, which is the intended purpose, and to manufacture a prosthesis in which the center position of the opening and closing movement is positively changed. The articulator was provided.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of the present invention.

FIG. 2 is a side view showing a usage state of the present invention.

3A is an AA enlarged sectional view of FIG. 1, FIG. 3B is a BB enlarged sectional view of FIG. 1, and FIG. 3C is a CC enlarged sectional view of FIG. is there.

FIG. 4 is an overall perspective view of another embodiment of the present invention.

FIG. 5 is an overall perspective view of another embodiment of the present invention.

6A is an enlarged cross-sectional view taken along line DD of FIG. 5, and FIG.
FIG. 6 is an enlarged sectional view taken along line EE of FIG. 5.

FIG. 7 is an overall perspective view of another embodiment of the present invention.

FIG. 8 is an overall perspective view of a conventional articulator.

[Explanation of symbols]

 1 ... Articulator 2 ... Supporting member 3 ... Maxillary base plate mounting frame 4 ... Maxillary base plate 5 ... Support frame 6 ... Mandibular base plate mounting frame 6a ... Spacer 7 ... Mandibular base plate 8 ... Support shaft 9 ... Receiving seat 10 ... Fastening Screw 11… Incision tooth pin 12… Scale 12a… Scale 13… Upper jaw model fixing base 13a… Upper jaw model fixing base bottom part 14… Screw hole 15… Fixing screw 16… Protrusion 17… Magnet 18… Upper jaw plaster model 19… Lower jaw plaster model 20… Lower jaw model fixing base 20a… Lower jaw model fixing base upper surface 21… Screw hole 22… Fastening screw 23… Magnet 31… Articulator 32… Upper jaw base plate mounting frame 33… Lower jaw base plate mounting frame 41… Articulator 42… Fastening Screw 43… Maxillary base plate slide member 43a… Screw hole 43b… Window 43c… Reading point 44… Groove 45… Retaining screw 46… Mandibular base plate slide member 47… Screw hole 51… Articulator 52… Maxillary base plate mounting frame 53… Lower jaw base plate mounting frame

Claims (2)

[Scope of utility model registration request] 1. A support member, an upper jaw base plate mounting frame slidably supported with respect to the support member, an upper jaw base plate mounted on the upper jaw base plate mounting frame, a support frame, and the support frame. A lower jaw base plate mounting frame slidably supported by a lower jaw, a lower jaw base plate mounted on the lower jaw base plate mounting frame, and a support shaft for rotatably connecting the support member to the support frame. Articulator. 2. The upper jaw base plate further comprises a slide member mounted slidably along the longitudinal direction of the upper jaw base plate mounting frame, and / or the lower jaw base plate is the lower jaw. The articulator according to claim 1, further comprising a slide member slidably mounted along a longitudinal direction of the base plate mounting frame.