WO2014042324A1

WO2014042324A1 - Model assembly for dental prostheses

Info

Publication number: WO2014042324A1
Application number: PCT/KR2013/001515
Authority: WO
Inventors: 김기수
Original assignee: Kim Gee Su
Priority date: 2012-09-17
Filing date: 2013-02-26
Publication date: 2014-03-20
Also published as: KR101381745B1; KR101566275B1; KR20140036989A; KR20140036937A

Abstract

The present invention provides a model assembly for dental prostheses, wherein the model assembly has fixing pins, to the upper surfaces of which a teeth model is coupled, so as to be used in manufacturing a dental prosthesis. The model assembly comprises: fixing members for fixing said multiple fixing pins at regular intervals, the fixing members being coupled to one another such that the fixing members can be separated from each other by means of an external force; and a base having multiple guide grooves into/from which said fixing pins are inserted/removed.

Description

Model assembly of dental stomatal prosthesis

The present invention relates to a model assembly of a dental stomatal prosthesis, and more particularly, in a model assembly in which fixing pins are used to produce a dental prosthesis by connecting a dental model to an upper surface thereof, a plurality of the fixing pins at regular intervals. Fixed to, but the fixing member is coupled to be separated by an external force; And a base having a plurality of guide grooves formed therein so as to allow the fixing pin to be inserted into and out of the fixing pin.

In general, teeth can be divided into small pieces of food to facilitate swallowing, and the small pieces of food can be digested and absorbed smoothly in the stomach or intestines, and can be communicated with accurate pronunciation. It will perform a very important function. Tooth that performs this important function is partly worn or decayed by frequent contact with foods, even though it is the most rigid part of the human body, and partly damaged by the impact of hard foods, etc. In some cases, all or part of the tooth may be lost due to an accident.

Tooth loss or damage as described above is directly affected by food intake and conversation, as well as affect other healthy teeth that are not damaged, it is desirable to be treated immediately when there is an abnormality.

In order to treat the damaged teeth as described above, the prosthesis is processed, the process of removing the surface of the damaged tooth to a certain depth to process the tooth so that the prosthesis can be fixed and then the shape of the tooth and the processed tooth pattern Will pop. Prosthesis has been completed by the process of making a model of the tooth using a material such as gypsum and fixing the tooth model to the base portion.

1 is a schematic cross-sectional view of a conventional model assembly.

Referring to FIG. 1, the base 1 may be referred to as a kind of support for seating a dental model for fixing the dental model so that subsequent work on the dental model can be easily performed. A grinding process of grinding with a grinder to flatten the bottom surface 2 of the tooth model in order to manufacture the tooth prosthesis using the tooth model; A punching process of drilling a hole (3) in the center of the lower end of the tooth model to be prosthetic among the ground tooth model; A fixing pin insertion process for inserting the fixing pin 5 into the perforated hole; A base (1) forming process of filling a dental powder in a mold of a predetermined shape in order to fix the lower end of the dental model into which the fixing pin is inserted, and placing the dental model into which the fixing pin is inserted; It consists of a cutting process of cutting with a saw to remove only the tooth model portion in order to prosthetic the dental model fixed to the top of the base.

However, in this way, the process of processing the teeth of a specific part of the entire tooth model that requires prosthetics is very complicated, and it takes a long time, and in the process of the above complex process, foreign matters such as dust There is a problem in that it is impossible to implement the production of a tooth model that exactly fits the teeth of the patient and the need for prosthetics to flow into the accessories such as the base.

Therefore, there is a high need for a dental model assembly which enables the production of a prosthesis that exactly matches the tooth arrangement of the patient by minimizing deformation of the dental model while minimizing the manufacturing time of the dental model assembly as a whole.

The present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.

The inventors of the present application, after repeated in-depth research and various experiments, confirm that the problem of the prior art can be solved by providing a dental model assembly to which a fixing pin that can be directly inserted and detached from the lower surface of the dental model is applied. The present invention has been completed.

In the model assembly of the dental stomatal prosthesis according to the present invention for achieving the above object is a model assembly is formed in which the fixing pins are used to manufacture the tooth prosthesis is coupled to the upper surface,

A plurality of fixing pins fixed at regular intervals, the fixing member being detachably coupled by an external force; And

It may be a structure consisting of; a base is formed with a plurality of guide grooves to enable the removal of the fixing pin.

Therefore, since the fixing member equipped with the fixing pins is directly inserted into the lower surface of the dental model, the intermediate manufacturing process for manufacturing the prosthesis can be greatly reduced, thereby significantly reducing work time and manufacturing cost.

The number and arrangement of the fixing pins and the corresponding guide grooves may vary. As a specific example, the arrangement may have a zigzag or at least two rows.

The fixing member may have a structure formed in a form separated into at least two units. Therefore, since the fixing member can be arranged to correspond to the tooth arrangement of the patient, the operation can be performed effectively.

Preferably, the fixing member may be a structure formed integrally with the fixing pins, for example, the fixing member may be integrally formed in a state where the side portions of the fixing pins are connected.

The fixing pin may have a structure including a first inserting portion inserted into the tooth model, a second inserting portion inserted into the base, and a close contact portion in close contact with a top end portion of the guide groove.

As one preferred embodiment, the diameter of the outer peripheral surface of the first insertion portion of the fixing pin may decrease toward the upper direction, the diameter of the outer peripheral surface of the second insertion portion may decrease toward the lower direction, the first insertion portion The height may be the same or smaller than the height of the second insert.

In some cases, the diameters of the outer circumferential surfaces of the first insertion part and the second insertion part may be formed to have a diameter equal to the diameter on the center of the fixing pin.

Thus, the pin can easily be inserted and detached from the tooth model and the base.

As a specific example, the fixing pin may have a structure in which a pair of widths are formed within a range of 3 mm to 7 mm, and an inner circumferential surface of the fixing pin is 1 mm to 3 mm, and a gap between the fixing pins is 0.5 mm to 1.5 mm. It may be a structure formed from.

In addition, the height of the first insertion portion may be a structure formed in the range of 3mm to 5mm, the height of the second insertion portion may be a structure formed in the range of 7mm to 9mm, the height of the contact surface is 0.5mm to 1.5. It is preferable to form in the range within mm.

The lower end of the fixing pin may preferably be a structure spaced apart from the lower surface of the guide groove.

Preferably, the fixing pin and the base may be formed of a material that can be cut by an external cutter, for example, a plastic material may be preferably used.

Therefore, the sawing pin can be cut when sawing for a prosthetic portion of the tooth that needs treatment, and thus, the sawing pin must be removed again for sawing due to a positional error of the corresponding tooth requiring a prosthesis. Since the cumbersome process is prevented, not only the work process efficiency is improved, but the fixing pin according to the present invention is formed of a plastic material and the like, and has a predetermined elastic force, so that the flow can be prevented. have.

On the other hand, the base may have a structure including a base body formed with the guide groove and a separating member that is detachably mounted while surrounding the outer surface of the base body.

In this structure, a structure in which a slide surface is formed on the upper portion of the inner surface of the separating member is preferable. Thus, the tooth model can be easily separated from the base.

In one preferred embodiment, the bottom surface of the base may be a structure in which at least one groove is formed, the top surface of the base may be a structure in which at least one protrusion is formed.

In addition, the cross section of the fixing pin may be a structure formed in a symmetrical structure or an asymmetrical structure with respect to the virtual center line.

The fixing pin, the fixing member and the base may be a structure formed by molding a plastic material.

Preferably, the model assembly may be a structure formed in an arcuate or semi-elliptic shape corresponding to the shape of the tooth.

1 is a cross-sectional view of a conventional model assembly;

2 is a perspective view of a model assembly to which a fixing pin and a base are applied according to the present invention;

3 is an exploded perspective view of a model assembly to which a fixing pin is applied according to one embodiment of the present invention;

4 is a cross-sectional view taken along line AA ′ of FIG. 2;

5 is a cross-sectional view taken along line BB ′ of FIG. 2;

6 is a cross-sectional view taken along line C-C 'of FIG. 2;

7 is a cross-sectional view of the model assembly with the fixing pin inserted in FIG. 5;

8 is a cross-sectional view of the model assembly with the fixing pin inserted in Figure 6;

9 is a bottom view of a base according to one embodiment of the present invention;

10 is a cross-sectional view of various embodiments (1) to (4) of D-D 'of the fixing pin.

11 is a cross-sectional view of the fixing pins integrally formed on the fixing members according to another embodiment of the present invention;

12 is a cross-sectional view of a model assembly in which fastening pins are arranged in two rows according to another embodiment of the present invention;

13 is a cross-sectional view of the fixing pins are mounted on the fixing member according to another embodiment of the present invention.

Hereinafter, the present invention will be further described with reference to Examples and the like, but the scope of the present invention is not limited thereto.

Figure 2 schematically shows a perspective view of a model assembly to which the fixing pin and base according to the present invention is applied, and Figure 3 schematically illustrates an exploded perspective view of the model assembly to which the fixing pin is applied according to an embodiment of the present invention. 4 to 6 schematically illustrate cross-sectional views of A-A ', B-B', and C-C 'of FIG. 2.

2 to 6, the model assembly 500 according to the present invention is mounted on the lower surface of the dental model 50 of the patient and a plurality of fixing pins 300 is coupled to one side and the fixing member 100 and The base 120 is configured to be included.

The fixing member 100 has a plurality of fixing pins 300 coupled to one side in a downward direction, and a weakening portion 101 is formed between the separating member 110 and the fixing pins 300, so that the fixing member 100 is fixed to the fixing member 100. ) And fixing pins 300 are easily broken while the fragile portion 101 is ruptured by external force.

Base 120 is composed of a base body 125 for supporting the entire lower surface of the tooth model 50, the separating member 110 is wrapped around the outer surface of the base body 125, the upper surface is open and detachably mounted. It is.

The base 120 is formed with a plurality of guide grooves 121 into which a plurality of fixing pins 300 are inserted into an upper surface thereof, and a fixing groove 123 is formed in a longitudinal direction on a lower surface thereof. In this structure, one side is formed with a protrusion 122 in the longitudinal direction of the base 120, the protrusion 122 is fixed so that the powder used in the preparation of the tooth model does not flow from the base 120.

Separating member 110 is a chamber (Chamber) that is substantially accommodated in the powder used in the manufacture of the tooth model (Camber), the inner surface so that the coagulant material such as dental cement, gypsum, investment material, easily separated from the separating member 110 The slide surface 111 is formed.

The fixing pin 300 may include a first insertion portion 310 inserted into a lower surface of the tooth model 50, a second insertion portion 320 directly inserted into the lower surface of the base 120, and a guide groove of the base 120. The contact portion 330 is in close contact with the 121.

The first inserting portion 310 is formed with an outer diameter W1 having a width of up to 2 mm and a height H1 of 4 mm, and the second inserting portion 320 has an outer diameter W1 having a width of up to 2 mm and a width of 8 mm. It is formed at height H2.

In addition, the close contact portion 330 is formed in a structure having an outer diameter W1 having an outer diameter of 2 mm and a height H3 of 1 mm, and the fixing pins 300 are spaced apart by a distance W2 of 1 mm. It is.

Since the close contact portion 330 is formed with a flat surface so that the side contact with the upper portion of the inner surface of the guide groove 121, the fixing pin 300 has a predetermined adhesion force to the guide groove 121 of the base 120. Can be fixed.

FIG. 7 is a cross-sectional view schematically illustrating the model assembly to which the fixing pin is applied to FIG. 5, and FIG. 8 is a cross-sectional view of the model assembly with the fixing pin inserted to FIG. 6, and FIG. 9 is the present invention. A bottom view of a base according to one embodiment of the present invention is schematically illustrated, and in FIG. 10, cross-sectional views of various embodiments (1) to (4) in the DD 'direction of the fixing pin are schematically illustrated. have.

7 to 10 together with FIGS. 1 to 6, the model assembly 500 according to the present invention is detachably coupled to a plurality of fixing pins 300 and a plurality of fixing pins 300. The fixing member 100, the base body 125 having the guide groove 121 into which the fixing pins 300 are inserted, and the separating member 110 and the base 120 which are detachably mounted to the base body 125. It is configured to include.

The fixing pin 300 has a circular shape (1), a square (2), a triangle (3) or a rhombus in various shapes so that the cross section (D-D ') is easily inserted and detached from the guide groove 121 of the base 120. It is formed in the symmetrical or asymmetrical (5) structure as in (4). Therefore, in the case of the asymmetric structure 5, the fixing pin 300 may be fixed to the guide groove 121 with a greater adhesion.

In addition, since the close contact portion 330 of the fixing pin 300 is formed in a shape corresponding to the inner surface of the guide groove 121, the close contact portion 330 is in close contact with the upper portion of the guide groove 121, the second insertion portion 320 The bottom surface (not shown) is spaced apart from the bottom surface (not shown) of the guide groove 121 by a predetermined distance. Therefore, even if foreign matters are caught in the guide groove 121 at the time of manufacturing the dental model prosthesis, it does not affect the working process.

FIG. 11 is a cross-sectional view of a state in which fixing pins are mounted on fixing members according to another embodiment of the present invention, and FIG. 12 illustrates fixing pins integrally to the fixing member according to another embodiment of the present invention. A cross-sectional view of the state formed by is shown schematically.

1 to 10, the model assembly 500 according to another embodiment of the present invention includes a plurality of fixing pins 300 and fixing members coupled to the fixing pins 300. (100, 100a, 100b), the base body 125 is formed with a guide groove 121 is inserted into the fixing pins 300 and the separating member 110 and the base detachably mounted to the base body 125 ( 120).

The fixing

members

100, 100a, and 100b are formed in three units with three or two fixing pins 300 fixed, respectively, and in the case of the fixing member 100c, the fixing members 100c are sided with the fixing pins 300. It is formed integrally with the site so as not to be separated, and there is a difference from the fixing

members

100, 100a, and 100b in that a separate weak portion 101 is not configured.

FIG. 13 schematically illustrates a cross section of the model assembly in which the fixing pins are arranged in two rows according to another embodiment of the present invention.

Referring to FIG. 13 together with FIGS. 1 to 10, the model assembly 500 according to another embodiment of the present invention may include first row fixing pins 301 and second row fixing pins 302 and a first row. The column fixing pins 301 and the second column fixing pins 302 are configured to include a base 120 having a first guide groove 121a and a second guide groove 121b formed therein, respectively.

The first row fixing pins 301 and the second row fixing pins 302 are arranged to be spaced apart from each other at predetermined intervals, and the first row fixing pins 301 and the second row fixing pins 302 are arranged. The first guide groove 121a and the second guide groove 121b are respectively formed in the base 120 corresponding to the base 120.

Accordingly, the first row fixing pins 301 are inserted into the first guide grooves 121a, and the second row fixing pins 302 are inserted into the second guide grooves 121a, respectively.

Hereinafter, a manufacturing process of the model assembly having such a structure will be described in detail.

First, a dental model is made by drawing a negative copy of a part or the entire tooth of a patient and injecting a dental coagulant into the indentation, and the tooth model is manufactured as the actual tooth model compared with the tooth structure of the patient.

Thereafter, the fixing pin 300 formed on the fixing member 100 is inserted into the guide groove 121 of the base 120, and the fixing member 100 is removed. At this time, the fixing member can be easily removed from the fixing pins 300 because the fragile portion 101 is easily ruptured. Then, the dental coagulant is injected into the open portion of the upper surface of the separating member 110 in a state in which the separating member 110 is coupled to the base 120, and the dental model is seated on the coagulating material to coagulate. .

Finally, when the coagulation of the coagulation material is completed after a predetermined time, the manufacturing process is terminated by separating the separating member 110 from the base 120 and then separating the tooth model from the separating member 110.

When this process is completed, the fixing pin 300 is inserted into the guide groove 121 and the bottom of the tooth model of the base 120 so as to be detached, so that the sawing for the prosthesis of the tooth area requiring treatment. In this case, by easily inserting and removing the fixing pin 300 as necessary, since the operation can be easily performed without a separate position adjustment process, the work process process is greatly reduced.

Although described with reference to the drawings according to an embodiment of the present invention, those of ordinary skill in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

As described above, the model assembly to which the fixing pin is applied according to the present invention can significantly reduce the processing for treating the position of the teeth requiring prosthetics, thereby providing a model assembly that can greatly reduce the processing time.

Claims

In the model assembly in which the tooth model is coupled to the upper surface is formed with the fixing pins used for manufacturing the prosthetics,

A plurality of fixing pins fixed at regular intervals, the fixing member being detachably coupled by an external force; And

And a base having a plurality of guide grooves formed therein so as to allow the fixing pin to be inserted therein.
The model assembly of claim 1, wherein the fixing pins have an arrangement of at least two rows with respect to the fixing member.
The model assembly of claim 1, wherein the fixing member is formed in a form separated into at least two units.
The model assembly of claim 1, wherein the fixing member is integrally formed with the fixing pins.
The method of claim 1, wherein the fixing pin is characterized in that the first insertion portion is inserted into the tooth model, the second insertion portion is inserted into the base and the close contact portion which is in close contact with the top end portion of the guide groove A model assembly of a dental pore prosthesis.
The model of claim 5, wherein a diameter of an outer circumferential surface of the first insertion portion of the fixing pin decreases toward an upward direction, and a diameter of an outer circumferential surface of the second insertion portion decreases toward a downward direction. Assembly.
6. The model assembly of claim 5, wherein the height of the first insert is less than or equal to the height of the second insert.
The model assembly of claim 1, wherein the fixing pin has a pair of widths within a range of 3 mm to 7 mm.
According to claim 8, wherein the inner circumferential surface of the fixing pin is 1mm to 3mm, the spacing between the fixing pin is a model assembly of the dental stoma prosthesis, characterized in that formed in the range of 0.5mm to 1.5mm.
The model assembly of claim 1, wherein the lower end of the fixing pin is spaced apart from the lower end surface of the guide groove.
The model assembly of claim 1, wherein the fixing pin and the base are formed of a material that can be cut by an external cutter.
The dental prosthesis of claim 1, wherein the base includes: a base body having the guide groove formed therein; and a separating member that is detachably mounted while surrounding the outer surface of the base body. Model assembly.
13. The model assembly of claim 12, wherein a slide surface is formed at an upper portion of the inner surface of the separating member.
The model assembly of claim 1, wherein at least one groove is formed on a lower surface of the base.
The model assembly of claim 1, wherein at least one protrusion is formed on an upper surface of the base.
The model assembly of claim 1, wherein the fixing pin, the fixing member, and the base are formed of a plastic material.
The model assembly of claim 1, wherein the cross section of the fixing pin has a symmetrical structure or an asymmetrical structure with respect to an imaginary center line.
18. The model assembly of a dental stomatal prosthesis according to any one of claims 1 to 17 is formed in an arcuate or semi-elliptic shape corresponding to the shape of the tooth.