Implant work model set

Abstract

A work model set according to the present invention relates to an implant model set including a lab analog and a model body into which the lab analog is inserted and coupled. The lab analog includes: a cylindrical body portion having a predetermined diameter and including an abutment coupling groove portion into which an abutment is inserted; and a fastening portion extending from the body portion, having a width smaller than the diameter of the body portion, and having a hollow formed therein. The model body includes: a body insertion portion into which the body portion is inserted; and a coupling portion into which the fastening portion is inserted. The fastening portion of the lab analog has a shape in which, in order to have the property of inwardly contracting due to an external force and the elastic property of being restorable when the external force is removed, a plurality of cutting holes are provided to be spaced apart from each other at regular intervals in the outer circumferential direction thereof, and a plurality of fastening pieces are disposed adjacent to each other with the cutting holes interposed therebetween. The coupling portion of the model body has a section in which the width thereof is expanded at a predetermined point so that the fastening pieces of the fastening portion contract while passing through the coupling portion and expand when entering the expansion section so that the fastening portion is fastened to the coupling portion.

Description

Implant working model set

[0001] The present invention relates to an implant working model set including a lab analog and a model body, and more particularly, to an implant working model set in which the lab analog and the model body can be easily combined and the bonding strength can be increased.

[0002] In general, an implant is composed of a fixture that is implanted into the alveolar bone, an abutment that is screwed into the fixture and fixed, and a crown (an artificial tooth) that is placed on the abutment and forms the appearance of the implant.

[0003] The above abutments, crowns, and other items are manufactured by scanning the interior of the oral cavity using a digital intraoral optical scanner, and utilizing this scanning data and CAD / CAM. A model body that embodies the patient's oral condition is then created, and a lab analog is combined with the model body to complete the working model set.

[0004] The above-mentioned lab analog is a component that replaces a fixture by manufacturing the external appearance simply while having the same internal structure as the fixture. In a dental laboratory, an abutment and crown can be manufactured and processed by implementing the same conditions as the fixture implanted in the patient's gums using a working model equipped with the lab analog.

[0005] The fixing of the wrap analog to the above model body is done using separately manufactured screws or bonds.

[0006] Korean Patent Publication No. 2021-0115942 discloses a lab analog for implants and a method for producing a digital three-dimensional model associated therewith, and Korean Patent Registration No. 10-2209274 discloses a lab analog for implants and a working model for implants including the same.

[0007] The lab analog is combined with the published implant working model, and a protrusion is provided that is pressed into the model body, so that it is formed without a separate fastening member or adhesive.

[0008] However, this structure is difficult to improve productivity because the structure of the lab analog and model body is relatively complex.

[0009] The present invention is intended to solve the above problems, and the purpose is to provide an implant working model set that can easily be combined and separated from a model body without using a separate fastening member or adhesive, and has a simple structure so as to improve productivity.

[0010] In order to achieve the above purpose, the implant working model set according to the present invention comprises a lab analog and a model body into which the lab analog is inserted and combined.

[0011] As to a set of implant models including:

[0012] The above wrap analog has an abutment joint groove into which an abutment is inserted, a cylindrical body having a certain diameter, and a fastening portion extending from the body and having a width smaller than the diameter of the body, and having a hollow portion formed therein.

[0013] The above model body includes a body insertion portion into which the body portion is inserted and a joint portion into which the fastening portion is inserted,

[0014] The fastening portion of the above wrap analog has a plurality of cut holes spaced apart from each other at regular intervals along the outer circumference so that it can contract inward by an external force and has an elastic property that can be restored when the external force is removed, and a plurality of fastening pieces are arranged adjacently with each cut hole in between.

[0015] The connecting portion of the above model body has a section in which the width expands at a certain point, so that the connecting piece of the connecting portion contracts as it passes through the connecting portion and expands when entering the expansion section, so that the connecting portion is connected to the connecting portion.

[0016] In the present invention, the fastening piece of the fastening part includes a connecting part extending from the body part, a first inclined traction slope extending from the connecting part but protruding outward as it goes downward, and a tapered part extending from the first traction slope but having a thickness that gradually becomes thinner from a certain position toward an end.

[0017] The above-mentioned joint includes an upper section into which a connecting portion of the fastening portion is inserted, a lower section into which a tapered portion of the fastening portion is inserted, and a second traction slope formed at the expansion section, which is a boundary surface between the upper section and the lower section, and which is coupled to the inclined first traction slope of the fastening portion and provides a traction force in the coupling direction to the first traction slope.

[0018] And further includes a fastening auxiliary device for coupling and separating the above-mentioned wrap analog to the above-mentioned model body,

[0019] The above fastening auxiliary device comprises a handle portion and a separation auxiliary portion formed inside one end of the handle portion and coupled with the tapered end of the fastening portion of the wrap analog to allow the fastening portion to be separated from the joining portion by bending the fastening pieces.

[0020] It includes a fastening auxiliary part formed at the other end of the handle part and screw-connected to the inside of the body part of the wrap analog.

[0021] The implant working model set according to the present invention can easily couple and separate the lab analog to the model body, and can provide a traction force in the direction in which the lab analog is coupled to the model body, thereby increasing the coupling strength of the lab analog.

[0022] Figure 1 is a side cross-sectional view showing the lab analog and model body of the implant working model set according to an embodiment of the present invention separated;

[0023] Fig. 2 is a cross-sectional view showing the state in which the lab analog and model body of Fig. 1 are combined.

[0024] Figure 3 is a perspective view showing an extract of the lab analog shown in Figure 1.

[0025] Fig. 4 is a cross-sectional view of the lab analog shown in Fig. 3;

[0026] Figure 5 is a fastening auxiliary device of an implant working model set according to the present invention.

[0027] A partially cut side view showing the

[0028] Fig. 6 is a cross-sectional view showing a process of separating a wrap analog connected to a model body using a fastening auxiliary device according to the present invention.

[0029] The above-described objects, features and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment of the present invention with reference to the accompanying drawings.

[0030] An implant model set can be completed by creating a model body that embodies the patient's oral condition using a 3D printer and combining a lab analog with the model body. The lab analog can be understood as a component that replaces the fixture by manufacturing it with a simplified exterior shape while having the same internal structure as the fixture that is connected to the abutment.

[0031] Referring to FIGS. 1 and 4, an implant model set according to an embodiment of the present invention includes a lab analog (100) and a model body (200) into which the lab analog is inserted and coupled. According to the present invention, since the lab analog (100) is fastened (coupled) during the process of inserting it into the model body (200), the fastening is easy and can be implemented with a simple structure.

[0032] The above implant lab analog (100) includes a body portion (110) and a fastening portion (130). The body portion (110) has a cylindrical shape with a certain diameter, and an abutment fastening groove portion (112) is formed therein for inserting and fastening an abutment (not shown). That is, the internal structure of the body portion (110) has the same shape as the internal structure of the fixture, so that the abutment is fastened therein.

[0033] The above abutment coupling groove (112) includes a first coupling groove (116) provided in a relatively lower region and having a screw formed therein so that the abutment can be screw-coupled into the body portion (110), and a second coupling groove (114) provided in an upper region of the first coupling groove (116) and having a shape corresponding to the end of the abutment, for example, a polygonal cross-section shape such as a square, pentagon, hexagon, or octagon, so as to prevent rotation of the abutment when the end of the abutment is inserted into the body portion (110).

[0034] In addition, a guide surface (118) having a flat shape for indicating the insertion direction when inserting the wrap analog (100) into the model body (200) is formed on the upper outer surface of the body (110), and a corresponding surface is also formed on the model body (200).

[0035] Meanwhile, an anti-rotation portion (120) is formed on the lower outer surface of the body portion (110) connected to the fastening portion (130). The anti-rotation portion (120) prevents the wrap analog (100) from rotating in the rotational direction when the wrap analog (100) is inserted and fastened inside the model body (200). The anti-rotation portion (120) is composed of three relatively long sections (122) and relatively short sections (124) respectively arranged between the sections (122).

[0036] According to an embodiment of the present invention, cross sections (124) are provided for manufacturing convenience, but the present invention is not limited thereto, and the cross sections (124) may be omitted.

[0037] Since the above body part (110) is cylindrical, when the wrap analog (100) is fastened to the model body (200) and then separated by a fastening auxiliary device (see FIG. 5) to be described later, rotation can be prevented by the anti-rotation part (120).

[0038] The above fastening portion (130) extends from the body portion (110) and has a hollow space formed therein. Meanwhile, the width of the fastening portion (130) is formed to be smaller than the diameter (D1) of the body portion (110).

[0039] The fastening portion (130) may have a polygonal or circular cross-section on its outer surface. If the outer surface of the fastening portion (130) is circular, its width may represent a diameter. If the outer surface of the fastening portion (130) is polygonal, its width may represent the longest diagonal among the diagonals connecting the vertices or the distance between the faces facing each other. According to a preferred embodiment of the present invention, the fastening portion (130) has a polygonal shape.

[0040] The fastening member (130) is provided with a plurality of cut holes (132) spaced apart from each other at a certain interval along the outer circumference so that it can be expanded inward by a certain amount of external force.

[0041] As illustrated, according to a preferred embodiment of the present invention, the outer circumferential surface of the fastening portion (130) has an approximately hexagonal cross-section (including the cut holes), and six cut holes (132) are formed. That is, the fastening portion (130) has a form in which six fastening pieces (137) are arranged adjacently with the cut holes (132) interposed therebetween, and the fastening pieces (137) have a structure in which they expand or contract in the direction of the expansion radius by the cut holes (132).

[0042] The above-mentioned fastening member (137) has an elasticity that causes it to bend inward when an external force is applied, and returns to its original shape when the external force is removed. Since the outer surface of the fastening member (130) has a hexagonal cross-section, when inserted into the connecting member (230) of the model body (200) described later and connected, there is no rotational play, enabling precise connection.

[0043] As described above, according to a preferred embodiment of the present invention, the outer surface of the fastening portion (130) has a cross-section of approximately hexagonal shape, but the present invention is not limited thereto, and the outer surface of the fastening portion (130) may be formed to have a cross-section of a circle or polygon.

[0044] The fastening piece (137) of the above fastening portion (130) includes a connecting portion (133) extending from the body portion (110), a first traction slope portion (134) extending from the connecting portion (133) but inclined so as to protrude outward as it goes downwards, and pulling the body portion (110) of the wrap analog (100) downward when combined with the model body (200), and a tapered portion (135) extending from the first traction slope portion (134) but having a thickness that gradually becomes thinner from a certain position toward the end.

[0045] As shown, the width (D3) of the lower end of the first traction slope (134) is relatively larger than the width (D2) of the connecting portion (133), but is also smaller than the diameter (D1) of the body portion (110). Here, the width of the connecting portion (133) and the width of the first traction slope (134) mean the distance between the two connecting portions (133) and the first traction slope (134) facing each other.

[0046] Meanwhile, the width of the upper portion of the tapered portion (135) is the same as the width (D3) of the lower end of the first traction slope portion (134), but since the thickness gradually becomes thinner from a certain position, the width also becomes smaller as it goes downward.

[0047] The above model body (200) includes a body insertion part (210) into which the body part (110) of the wrap analog (100) is inserted, a joining part (230) into which the fastening part (130) of the wrap analog (100) is joined, and a fastening auxiliary device insertion part (250).

[0048] Since the wrap analog (100) is inserted and fastened to the model body (200), the body insertion portion (210) and the coupling portion (230) of the model body (200) have shapes corresponding to the body portion (110) and the coupling portion (130) of the wrap analog (100), respectively.

[0049] Accordingly, since the fastening portion (130) of the above-mentioned wrap analog (100) has a width smaller than the diameter of the body portion (110), the width (D5, D6) of the joining portion (230) of the model body (200) is formed smaller than the diameter (D4) of the body insert portion (210).

[0050] In addition, since the width (D3) of the lower end of the first traction slope (134) (or the width of the upper end of the tapered portion (135)) is greater than the width (D2) of the connecting portion (133) in the connecting portion (130) of the wrap analog (100), the corresponding connecting portion (230) of the model body (200) is formed so that the width (D6) of the lower section (233) into which the tapered portion (135) of the connecting portion (130) is inserted is greater than the width (D5) of the upper section (231) into which the connecting portion (133) of the connecting portion (130) is inserted.

[0051] At the boundary surface of the upper section (231) and the lower section (233) of the above-mentioned connecting portion (230), a second traction slope (232) is formed to be connected with the inclined first traction slope (134) of the body portion (110) and to pull the body portion (110) downward.

[0052] In this way, in the process of inserting the wrap analog (100) from the upper part to the lower part of the model body (200), the first traction slope (134) of the wrap analog (100) is caught by the second traction slope (232) of the model body (200), so that the wrap analog (100) and the model body (200) are combined and the body part (110) of the ram analog (100) is pulled downward.

[0053] To explain this in more detail, when the wrap analog (100) is combined with the model body (200), the fastening portion (130) of the wrap analog (100) is inserted into the connecting portion (230) via the body insertion portion (210) of the model body (200). At this time, the tapered portion (135) of the fastening portion (130) of the wrap analog (100) acts as a guide when combined with the connecting portion (230) of the model body (200).

[0054] In this state, as the wrap analog (100) is moved further downward, the fastening pieces (137) are bent inward, and when the upper part of the tapered portion (135) enters the lower section (233) of the joining portion (230), the external force acting on the tapered portion (135) is eliminated, so the fastening pieces (137) including the tapered portion (135) are expanded outward and spread apart.

[0055] Accordingly, the first traction slope (134) of the fastening piece (137) is caught by the second traction slope (232) of the connecting piece (230), and thereby the wrap analog (100) is fastened to the model body (200). In this state, the first traction slope (134) of the fastening piece (137) is pressed against the second traction slope (232) by elastic force, thereby providing a traction force that pulls the body part (110) downward, and can prevent the body part (110) from shaking due to play.

[0056] Meanwhile, the implant working model set according to the present invention may further include a fastening auxiliary device as shown in Fig. 5.

[0057] Referring to the drawing, the above fastening auxiliary device (300) is used as an auxiliary tool for connecting and separating the wrap analog (100) from the model body (200).

[0058] The fastening auxiliary device (300) includes a handle portion (310) that can be gripped by a worker, a separation auxiliary portion (330) formed inside one end of the handle portion (310), and a fastening auxiliary portion (350) installed to protrude from the other end of the handle portion (310).

[0059] The above separation auxiliary part (330) is provided with a separation groove (331) for engaging the end of the tapered part (135) of the fastening part (130) of the wrap analog (100) and for bending the fastening pieces (137) of the fastening part (130). In addition, the fastening auxiliary part (350) has a screw part (353) formed on the outer circumference, and this screw part (353) is screw-connected with the screw of the first coupling groove (116, see FIG. 5) provided inside the body part (110) of the wrap analog (100).

[0060] In order to connect the lap analog (100) to the model body (200) using the above-mentioned fastening auxiliary device (300), the fastening auxiliary part (350) is inserted into the body part (110) of the lap analog (100) and screw-connected with the second connecting groove (116) inside the body part (110).

[0061] In this state, the wrap analog (100) is inserted into the model body (200) and the fastening part (130) of the wrap analog (100) and the joining part (230) of the model body (200) are joined. Once the joining is complete, the fastening auxiliary part (350) and the wrap analog (100) are separated.

[0062] And in order to separate the wrap analog (100) and the model body (200), the separation auxiliary part (330) of the fastening auxiliary device (300) is inserted into the fastening auxiliary device insertion part (250) formed at the lower end of the model body (200). Then, the end of the tapered part (135) of the fastening part (130) is inserted into the separation groove (331) of the separation auxiliary device (330) so that the fastening pieces (137) are bent inward by an external force. In this state, the fastening auxiliary device (300) is pressed in the direction in which the wrap analog (100) is separated.

[0063] In this way, the first traction slope (134) of the fastening portion (130) is separated from the second traction slope (232) of the joining portion (230), and the wrap analog (100) is separated from the model body (200).

[0064] As described above, the implant working model set according to the present invention facilitates the attachment and detachment of the lab analog to the model body, and can provide traction in the direction in which the lab analog is attached to the model body, thereby enhancing the bonding strength of the lab analog. In addition, the present invention has a relatively simple structure for attaching the model body and the lab analog, thereby reducing production costs and further enhancing productivity.

[0065] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A model body in which the lab analog is inserted and connected, and a lab analog As to a set of implant models including: The above wrap analog has an abutment joint groove into which an abutment is inserted, a cylindrical body having a certain diameter, and a fastening portion extending from the body and having a width smaller than the diameter of the body, and having a hollow portion formed inside. The above model body includes a body insertion portion into which the body portion is inserted and a joint portion into which the fastening portion is inserted. The fastening part of the above wrap analog has a plurality of cut holes spaced apart from each other at regular intervals along the outer circumference so that it can contract inwardly by an external force and has an elastic property that can be restored when the external force is removed, and a plurality of fastening pieces are arranged adjacently with each cut hole in between. An implant working model set characterized in that the connecting portion of the above model body has a section whose width expands at a certain point, so that the connecting piece of the connecting portion contracts while passing through the connecting portion and expands when entering the expanding section, so that the connecting portion is connected to the connecting portion.

2. In paragraph 1, An implant working model set characterized in that the outer surface of the above-mentioned fastening part has a circular or polygonal cross-section.

3. In paragraph 2, The outer surface of the above-mentioned fastening part has a hexagonal cross-section, A set of implant working models characterized by the formation of six incision holes.

4. In paragraph 1, The fastening piece of the above fastening part includes a connecting part extending from the body part, an inclined first traction slope extending from the connecting part but protruding outward as it goes downward, and a tapered part extending from the first traction slope but having a thickness that gradually becomes thinner from a certain position to the end. An implant working model set characterized in that the above-mentioned joint part includes an upper section into which a connecting section of the fastening section is inserted, a lower section into which a tapered section of the fastening section is inserted, and a second traction slope part formed at the expansion section which is a boundary surface between the upper section and the lower section and which is coupled with the inclined first traction slope part of the fastening section and provides a traction force in the coupling direction to the first traction slope part.

5. In paragraph 4, It further includes a fastening auxiliary device for connecting and disconnecting the above-mentioned wrap analog to the above-mentioned model body, The above fastening auxiliary device comprises a handle portion and a separation auxiliary portion formed inside one end of the handle portion and coupled with the tapered end of the fastening portion of the wrap analog to allow the fastening portion to be separated from the joining portion by bending the fastening pieces. An implant working model set characterized by including a fastening auxiliary part formed at the other end of the handle part and screw-connected to the inside of the body part of the wrap analog.

6. In paragraph 1, An implant working model set characterized in that the lower outer surface of the body portion connected to the fastening portion of the above-mentioned wrap analog has an anti-rotation portion having a triangular surface structure.

7. In paragraph 1, An implant working model set characterized in that a guide surface having a flat shape is formed on the upper outer surface of the body of the above-mentioned wrap analog to indicate the insertion direction when inserting the above-mentioned wrap analog into the above-mentioned model body.

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