WO2021125405A1

WO2021125405A1 - Customized artificial tooth unit

Info

Publication number: WO2021125405A1
Application number: PCT/KR2019/018195
Authority: WO
Inventors: 이상화
Original assignee: 가톨릭대학교 산학협력단
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-24

Abstract

The present invention relates to a customized artificial tooth unit. The customized artificial tooth unit according to the present invention is characterized by comprising: an implant which has a fastening groove and is a part to be implanted in an extraction socket part in order to reproduce the root part of a tooth; a connecting body which is coupled to the implant through the fastening groove and has an angle regulating groove having a slope according to the degree of inclination in a 3-dimensional space between the crown part and root part of the tooth; a crown which is a part for reproducing the crown part of the tooth and is connected to the implant; and an abutment which is disposed between the connecting body and the crown, and has one side coupled to the angle regulating groove of the connecting body and the other side coupled to the crown, thus connecting the implant and the crown.

Description

Customized artificial tooth unit

The present invention relates to a customized artificial tooth unit, and more specifically, it is possible to make customized products reflecting the arrangement state or formation angle of the teeth, etc., and to make the most of the commercialized ready-made products and to use only the parts requiring personal customization in combination with the ready-made products. It relates to a customized artificial tooth unit with an improved structure so that surgery can be performed without replacing the implant placed in the alveolar bone even if the dental state changes over time.

In general, artificial teeth used for restoration of damaged teeth include implants, abutments, and crowns.

Here, the implant means a fixture to be placed in the alveolar bone so as to support the crown for restoration of a missing tooth to the alveolar bone, and the abutment is, for connection between the implant and the crown, the implant It means a column coupled to the crown, which means that the crown is manufactured in a shape similar to the patient's teeth.

It is a well-known fact that, as the technology of manufacturing artificial teeth of the above-described structure with a 3D printer is widely used in recent years, it is easy to manufacture artificial teeth customized for a patient.

However, according to the conventional artificial tooth manufacturing method, as R&D is focused only on patient-specific structural design, individual manufacturing of implants, abutments, and crowns is easily made. There is no review of compatibility between parts, such as whether it is possible to design a structure that enables use.

That is, according to the conventional manufacturing method of molding an implant with a 3D printer, it does not reflect close data on how the root part and the crown part (H) of the tooth are positioned in the XYZ three-dimensional space (see Fig. 1), Simply, the commercialized ready-made abutment is formed by uniformly forming a screw groove to be combined with the abutment on the implant, and realizing the occlusion and angle between the components through the adjustment of the implant placement position, the abutment and the crown shape. and screws could not be used, and there was a problem in that an abutment and a screw of a new standard had to be separately manufactured.

In order to overcome this problem, the present applicant has developed a technology such as registration number 10-1744447 (refer to FIG. 2). That is, according to the artificial tooth unit shown in FIG. 2, the angles of the

screw grooves

12a, 12b, 12c, and 12d formed in the implant 10 are individually customized by the 3D printing method. It enables the production of customized artificial teeth in consideration of different dental conditions for each person and enables the use of ready-made abutments 20 and screws S. Reference numeral 30 in the drawings denotes a crown having a shape corresponding to the crown portion of the tooth.

However, even in the case of such an artificial tooth unit, there is a limitation in that commercialized implants cannot be used, so the need to expand the ready-made products used in the manufacture of artificial teeth to implants has been raised, and additional procedures are required in response to changes in the teeth over time. Since the implant placed in the alveolar bone must be replaced with an implant having a new inclination angle when it is necessary, the need for product development that does not require replacement of the implant has been raised.

The present invention has been devised by the above necessity, and the object of the present invention is to enable customized production reflecting the arrangement state or formation angle of teeth, etc., and to separately produce only the parts that require individual customization and the remaining components are commercialized ready-made products This is to provide a customized artificial tooth unit that does not require replacement of implants placed in the alveolar bone even if the dental condition changes over time.

A customized artificial tooth unit according to the present invention for achieving the above object is a part to be placed on an extraction tooth and a part in order to reproduce the root part of the tooth, and an implant having a fastening groove formed therein; a connector coupled to the implant through the fastening groove and having an angle adjustment groove formed thereon to have an inclination according to the degree of inclination in a three-dimensional space between the crown portion and the root portion of the tooth; A portion for reproducing the crown portion of the tooth, the crown connected to the implant; and an abutment disposed between the connector and the crown, one end coupled to the angle adjustment groove of the connector and the other end coupled to the crown to connect the implant and the crown. .

The fastening groove of the implant is preferably formed along an axis inclined at a predetermined angle with respect to the central axis.

The abutment may include a first coupling part coupled to the connector and a second coupling part extending at an inclined angle with respect to the first coupling part and coupled to the crown.

The customized artificial tooth unit according to the present invention having the configuration as described above reflects the inclination between the implant and the abutment, which varies depending on the arrangement state or the formation angle of different teeth for each person, in the angle adjustment groove of the connector. It enables the production of personalized artificial teeth, and allows the production of artificial teeth only with ready-made products without the use of a connector, or if the use of a connector is selectively required, the implant and other components other than the connector By allowing the butt and screw to be used as ready-made products, it has the effect of improving the convenience of the procedure and reducing costs.

In addition, the customized artificial tooth unit according to an embodiment of the present invention, even when replacement of the implant is required according to the change of the dental structure after the implant is placed in the tooth extraction and part, only by replacing the connector instead of replacing the implant. It also enables a procedure corresponding to the changed dental structure to provide high-quality medical services.

1 is a view for showing the arrangement of different teeth for each person.

Figure 2 is a view for explaining the artificial tooth unit according to the prior art.

Figure 3 is a view for explaining the structure and advantages of a customized artificial tooth unit according to an embodiment of the present invention.

4 is a view for explaining various usage examples of an embodiment of the present invention.

5 is a cross-sectional view of a customized artificial tooth unit according to another embodiment of the present invention.

6 is a cross-sectional view of a customized artificial tooth unit according to another embodiment of the present invention.

Hereinafter, a customized artificial tooth unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view for explaining the structure and advantages of a customized artificial tooth unit according to an embodiment of the present invention, Figures 4 and 5 are views for explaining various examples of use of an embodiment of the present invention.

As shown in these drawings, the customized artificial tooth unit according to an embodiment of the present invention enables customized fabrication by reflecting the arrangement state or formation angle of different teeth for each person, and the implant 1 and the connector body (2) and a crown (4) and abutment (3).

The implant (1) is a part to be placed on the tooth extraction and part in order to reproduce the root part of the tooth, and a fastening groove 11 for fastening with a screw as shown in (a) of FIG. 3 or (b) of FIG. A fastening groove 11 for fastening with the connecting body 2 is formed.

That is, the customized artificial tooth unit according to an embodiment of the present invention requires a procedure in which the implant 1 and the abutment 3 are tilted according to different dental conditions for each person as shown in FIG. 3 (b). In this case, the connector 2 for reflecting the inclination is coupled to the fastening groove 11 of the implant 1 to manufacture a personalized artificial tooth, and as shown in FIG. 3(a), the implant 1 ) and the abutment (3') are not inclined and if the procedure is required at the same angle, the artificial tooth can be manufactured only with the ready-made implant (1) and the abutment (3') without the use of the connector (2). let there be

The connecting body 2 is different from (a) of FIG. 3 when a procedure is required with the implant 1 and the abutment 3 inclined at a specific angle as shown in FIG. 3 (b). Optionally, an angle adjustment groove 21 coupled to the implant 1 through the fastening groove 11 and having an inclination according to the degree of inclination in the three-dimensional space between the crown portion and the root portion of the tooth is provided. is formed

Of course, the connection body 2 may be implemented by various methods such as a 3D printing method, a method such as extrusion or injection, or a milling process. However, according to the 3D printing method, image information about the alveolar bone and the tooth image is obtained by a photographing means such as CT, but the inclination information generated according to the degree of inclination of the crown part and the root part of the tooth in the XYZ three-dimensional space. , After generating modeling data for output based on the image information acquired together with the image information, the 3D printer enables the production of the connector 2 reflecting the inclination according to different dental conditions for each person, so that individual customization is possible. The advantage of being able to smoothly manufacture artificial teeth is expected.

In this way, by forming the angle adjustment groove 21 according to the tooth arrangement state or formation angle different for each person in the connector 2, the implant 1 and the abutment 3 have the same axis line as shown in FIG. 4 . In the case of being formed along, it is possible to use the ready-made implant 1 and the abutment 3' without requiring the manufacture of a new implant 1 or abutment 3', which is optionally shown in FIG. Similarly, when the implant (1) and the abutment (3) need to be arranged at an angle (when the root part of the tooth and the crown part are formed at an angle), the connector (2) having the angle adjustment groove (21) By connecting the implant 1 and the abutment 3 through the

The crown 4 is a part for reproducing the crown portion of the tooth, and is connected to the implant 1 . In general, the crown 4 is connected to the implant 1 through the abutment 3 , but in this embodiment, the crown 4 is connected to the implant 1 through the abutment 3 and the connector 2 . do.

The abutment (3) is disposed between the connecting body (2) and the crown (4), one end is coupled to the angle adjustment groove (21) of the connecting body (2) and the other end is the crown (4) By being coupled to the implant (1) and the crown (4) is connected.

The customized artificial tooth unit according to an embodiment of the present invention having such a configuration is a connecting body for the inclination between the implant 1 and the abutment 3, which varies depending on the arrangement state or the formation angle of different teeth for each person. By being configured to be reflected in the angle adjustment groove 21 of (2), it is possible to manufacture a personalized artificial tooth, and as shown in FIGS. 4 (a) and (b), artificial teeth only with a ready-made product without using the connector (2) It enables the manufacture of teeth, and optionally, as shown in FIGS. 5 (a) and (b), when the use of the connector 2 is required, the implant 1, which is the remaining component except the connector 2, and The abutment 3 and the screw can be used as ready-made products so that convenience and cost reduction can be expected.

In addition, the customized artificial tooth unit according to an embodiment of the present invention replaces the implant (1) even when replacement of the implant (1) is required according to a change in the dental structure after the implant (1) is placed on the tooth extraction and part. Instead, it is possible to perform a procedure corresponding to the changed dental structure only by replacing the connector 2 , thereby deriving the advantage of enabling the provision of high-quality medical services.

In the abutment 300 employed in this embodiment, unlike the embodiments described above, the first coupling part 301 is formed at an inclined angle with respect to the second coupling part 302 .

That is, the abutment 300 is formed to extend at an inclined angle with respect to the first coupling part 301 coupled to the coupling body 200 and the first coupling part 301 and coupled to the crown. It is made to include a second coupling portion (302).

In this embodiment having such a configuration, when the inclination angle between the implant 100 and the abutment 300 is required to be larger than the embodiment shown in FIG. 5 , the implant 100 and the connector 200 are As it enables additional inclination adjustment by the abutment 300 in addition to the inclination adjustment by the abutment 300, the design is so that the implant 100 and the abutment 300 are tilted so large that they cannot be implemented by the conventional treatment method. Even in the case of a required tooth, a high-level artificial tooth operation is smoothly performed through the inclination adjustment using the fastening groove 101 of the implant 100, the angle adjustment groove 201 of the connector 200, and the abutment 300. make it do

7 is a cross-sectional view of a customized artificial tooth unit according to another embodiment of the present invention.

In the implant 500 employed in this embodiment, the fastening groove 501 of the embodiment described above is formed straight without being inclined with respect to the central axis of the implant 500 , but with respect to the central axis of the implant 500 . It is formed along an axis inclined at a certain angle.

In this embodiment having such a configuration, when the inclination angle between the implant 500 and the abutment is required to be large, the inclination adjustment by the angle adjustment groove 601 of the connector 600 as well as the implant 500 is As additional inclination adjustment is possible through the fastening groove 501, the implant 500 and the abutment 600 are relatively Even in the case of a tooth that requires a design to be arranged at a large inclination, it enables a smooth operation through tilt adjustment using the fastening groove 501 of the implant 500 and the angle adjustment groove 601 of the connector 600 .

Although various embodiments of the present invention have been described above, this embodiment and the drawings attached to this specification only clearly show a part of the technical idea included in the present invention, and the drawings included in the specification and drawings of the present invention are only clearly shown. It will be apparent that all modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical spirit are included in the scope of the present invention.

Claims

The implant is a part to be placed on the tooth extraction and part in order to reproduce the root part of the tooth, the fastening groove is formed;

a connector coupled to the implant through the fastening groove and having an angle adjustment groove formed thereon to have an inclination according to the degree of inclination in a three-dimensional space between the crown portion and the root portion of the tooth;

A portion for reproducing the crown portion of the tooth, the crown connected to the implant; and

An abutment disposed between the connector and the crown, one end coupled to the angle adjustment groove of the connector and the other end coupled to the crown to connect the implant and the crown. artificial tooth unit.
According to claim 1,

The fastening groove of the implant is a customized artificial tooth unit, characterized in that formed along an axis inclined at a certain angle with respect to the central axis.
According to claim 1,

The abutment is a custom artificial tooth comprising a first coupling part coupled to the connector and a second coupling part extending at an inclined angle with respect to the first coupling part and coupled to the crown. unit.