Alternative body for making dental cast implant

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a dental cast implant acting substitute body which comprises a substitute body, a fastening bolt is arranged at one end of the substitute body, a connecting groove is axially formed in the other end of the substitute body, an external expansion part extending outwards in the radial direction is arranged at a notch of the connecting groove, and the external expansion part is connected with the fastening bolt. The side, close to the fastening bolt, of the replacement body is provided with an anti-torsion part, and the anti-torsion part abuts against the fastening bolt. The end part of the substitute body, namely the notch of the connecting groove, is provided with the external expansion part which extends outwards, and the limiting surface of the external expansion part can be propped against the inner wall of the model jack, so that the shaking of the substitute body caused by the installation of the base station at the upper end can be greatly reduced. And in addition, the abutting of the external expansion part and the connecting groove in the axial direction can participate in the confrontation balance of the locking force of the fastening bolt, and the problem that the stress on the step surface of the anti-torsion part is unstable is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a dental model implant system substitute. Background Art

[0002] Dental implants are a type of restoration method that implants biological materials that are highly compatible with human bone into the alveolar bone, and then makes a denture on the implant. The implant is installed on the alveolar bone, but when making a crown, it cannot be directly placed or removed from the alveolar bone. Usually, a substitute is used to replace the implant and installed in a plaster model. The implant information in the patient's mouth can be accurately transferred to the plaster model, making it convenient to design the upper structure such as the base on the substitute, thereby making the crown.

[0003] Patent CN205866869U discloses a replacement body for an implant, the replacement body comprising a replacement body body and a screw, the bottom end of the replacement body body is provided with a first threaded hole matched with the screw, and the bottom of the replacement body body is provided with a retention surface. The replacement body provided by the utility model is not fixed by a step surface, but is fixed to the printed model by screwing the replacement body body and the screw, and the replacement body is prevented from rotating by the retention surface, and can be installed and disassembled without removing the printed model or the plaster model, which is quick, convenient, and cost-saving.

[0004] In the above scheme, the fixation of the main body of the substitute on the plaster model completely relies on the locking clamping of the step surface and the screws, and the step surface is formed by the retaining surface, and the retaining surface needs to ensure the torsional strength of the main body. The degree of inward inclination when it is opened cannot be too deep. Therefore, the supporting area of ​​the step surface is very small and the pressure it can withstand is not large. In addition, the subsequent base installation is all at the upper end of the main body, and the upper end of the main body lacks a structure that cooperates with the plaster model to limit the position, which will cause the main body of the substitute to shake very easily in the slot gap on the plaster model after being connected to the base. Utility Model Content

[0005] The purpose of the utility model is to provide a dental model implant system substitute that can solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The dental implant system serves as a substitute, including a substitute body, one end of which is provided with a fastening bolt, the other end of which is axially provided with a connecting groove, the notch of which is provided with an outward expansion portion extending radially outward, and an anti-torsion portion is provided on one side of the substitute body close to the fastening bolt, and the anti-torsion portion is abutted against the fastening bolt.

[0008] In the dental implant substitute, the outward expansion portion includes a limiting surface and a splicing surface. The splicing surface extends outward from the notch of the connecting groove to the outside of the outer arc surface of the substitute body. The limiting surface is smoothly connected between the splicing surface and the outer arc surface of the substitute body.

[0009] In the dental implant substitute, the joint surface includes an inner inclined surface and an outer inclined surface, the inner inclined surface is connected to the inner wall of the connecting groove, the outer inclined surface is connected to the limiting surface, and the connection between the inner inclined surface and the outer inclined surface forms a sealing portion.

[0010] In the dental implant substitute, the diameter of the anti-torsion portion is smaller than the bolt cap of the fastening bolt, and an anti-torsion groove is provided in the anti-torsion portion, and the anti-torsion groove is arranged along the axial direction of the substitute body.

[0011] In the dental model implant serving as a substitute, the anti-torsion groove comprises an arcuate groove and a plane groove, and the arcuate groove and the plane groove are arranged relatively on the arc surface of the anti-torsion part.

[0012] In the dental model implant serving as a substitute, a first threaded hole is axially opened at the axis center line position of the anti-torsion portion, and the first threaded hole cooperates with the screw rod of the fastening bolt.

[0013] In the dental model implant serving as a substitute, a second threaded hole is axially opened at the bottom of the connecting groove, and the second threaded hole is coaxially arranged with the first threaded hole and the two are connected.

[0014] In the dental implant substitute, a fastening groove is provided on one end face of the fastening bolt cap relative to the screw rod, and the fastening groove is arranged on the axial center line of the fastening bolt.

[0015] In the dental model implant substitute, the connection groove includes a calibration portion and an inner hexagon portion, the calibration portion is arranged at the notch and connected with the outer expansion portion, and the inner hexagon portion is connected to a side of the calibration portion away from the notch.

[0016] In the dental model implant substitute, the calibration portion gradually reduces its diameter inward from the connection with the outward expansion portion to the connection with the inner hexagon portion.

[0017] The advantages of the utility model are:

[0018] The end of the replacement body, that is, the notch of the connecting groove, is provided with an outwardly extending expansion part, and the limiting surface of the expansion part can abut against the inner wall of the model socket, which can greatly reduce the shaking of the replacement body caused by the installation of the upper end base. In addition, the abutment of the expansion part against the connecting groove in the axial direction can participate in the counterbalancing of the locking force of the fastening bolt, compensating for the problem of unstable force on the step surface of the anti-torsion part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0021] In the figure, the replacement body 1, the connecting groove 11, the calibration part 111, the hexagonal part 112, the outward expansion part 12, the limiting surface 121, the splicing surface 122, the anti-torsion part 13, the anti-torsion groove 16, the first threaded hole 17, the second threaded hole 18, the fastening bolt 2, and the fastening groove 21. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments.

[0023] Example 1

[0024] like Figure 1-Figure 2 As shown, the dental implant system serves as a substitute, including a substitute body 1, one end of which is provided with a fastening bolt 2, the other end of the substitute body 1 is axially provided with a connecting groove 11, the notch of the connecting groove 11 is provided with an outward expansion portion 12 extending radially outward, and an anti-torsion portion 13 is provided on the side of the substitute body 1 close to the fastening bolt 2, and the anti-torsion portion 13 is abutted against the fastening bolt 2.

[0025] That is, when making an artificial crown, the connecting component used to fix the base to the alveolar bone model uses the fastening bolt 2 to lock the substitute body 1 from the outside of the model. Since the connection part between the fastening bolt 2 and the substitute body 1 is biased to the lower end, the torque is increased after the base is installed, making the substitute body 1 more prone to shaking. In order to maintain the stability of the substitute body 1, an outward expansion part 12 is provided on the outer wall near the connecting groove 11, so that the upper end of the substitute body 1 is more closely fitted with the model socket, thereby improving the ability of the substitute body 1 to resist shaking.

[0026] Among them, the outward expansion part 12 also increases the axial contact area between the replacement body 1 and the socket, so that the fastening bolt 2 can more safely lock the replacement body 1 on the model, avoiding the replacement body 1 from falling off from the socket due to unstable force due to the small step surface of the anti-torsion part 12.

[0027] In this embodiment, the outward expansion portion 12 includes a limiting surface 121 and a splicing surface 122. The splicing surface 122 extends outward from the notch of the connecting groove 11 to the outside of the outer arc surface of the substitute body 1. The limiting surface 121 is smoothly connected between the splicing surface 122 and the outer arc surface of the substitute body 1.

[0028] The joint surface 122 needs to be completely joined with the base connected thereto after being screwed on to avoid the formation of a fine joint gap that may cause accumulation of impurities and prevent the oral tissue from being scratched by the edge of the joint.

[0029] The limiting surface 121 is inclined against the inner wall of the model insertion hole, thereby generating limiting blocks in both radial and axial directions, making the replacement body 1 more stable after installation.

[0030] Preferably, the joint surface 122 includes an inner inclined surface and an outer inclined surface, the inner inclined surface is connected to the inner wall of the connecting groove 11, and the outer inclined surface is connected to the limiting surface 121, and the connection between the inner inclined surface and the outer inclined surface forms a sealing portion.

[0031] The outer inclined surface cooperates with the edge of the base to form a smooth outer surface to avoid damaging oral tissue, and the inner inclined surface fits against the base root to prevent impurities from falling into the connecting groove 11. The inclined surface and the outer inclined surface both present a peak-like shape, which can effectively prevent the liquid in the oral cavity from entering the connecting groove 11, and play a good sealing role.

[0032] In this embodiment, the diameter of the anti-torsion portion 13 is smaller than the bolt cap of the fastening bolt 2 , and an anti-torsion groove 16 is provided in the anti-torsion portion 13 , and the anti-torsion groove 16 is arranged axially along the substitute body 1 .

[0033] The anti-torsion portion 13 is a cylinder with a smaller diameter than the substitute body 1. The stepped surface generated by the reduced diameter abuts against the raised portion in the model socket to limit the axial movement of the substitute body 1. The bolt cap of the fastening bolt 2 is usually the same diameter as the substitute body 1, and the difference in diameter forms the concave anti-torsion portion 13.

[0034] The anti-torsion groove 16 changes the cylindrical shape of the anti-torsion portion 13 so that the anti-torsion portion 13 cannot rotate circumferentially in the model socket, thereby limiting the installation angle of the abutment and making the crown face a fixed direction.

[0035] Preferably, the anti-torsion groove 16 includes an arc-shaped groove and a plane groove, and the arc-shaped groove and the plane groove are arranged on the arc surface of the anti-torsion portion 13 relatively.

[0036] The arc groove on one side and the plane groove on the other side can determine the angle at which the substitute body 1 is inserted into the socket, which can not only prevent the substitute body 1 from rotating in the socket, but also play a fool-proof role during installation.

[0037] In this embodiment, a first threaded hole 17 is axially opened at the axis center line of the anti-torsion portion 13 , and the first threaded hole 17 is matched with the screw rod of the fastening bolt 2 .

[0038] In this embodiment, a second threaded hole 18 is axially opened at the bottom of the connection groove 11, and the second threaded hole 18 is coaxially arranged with the first threaded hole 17 and the two are connected. The second threaded hole 18 is used to connect with the locking screw of the base, so that the second threaded hole 18 is connected with the first threaded hole 17, and the sundries that accidentally fall into the connection groove 11 can be climbed out from the first threaded hole 17 after the fastening bolt 2 is unscrewed.

[0039] In this embodiment, a fastening groove 21 is formed on one end surface of the bolt cap of the fastening bolt 2 opposite to the screw rod. The fastening groove 21 is arranged on the axis line of the fastening bolt 2 .

[0040] The fastening bolt 2 is small in size and is difficult to be screwed by hand, especially when installed on a model. Therefore, a fastening groove 21 is provided on the outside of the bolt cap so that the fastening groove 21 and the bolt rod are on the same axis, and a screwdriver is used to screw the fastening bolt 2.

[0041] In this embodiment, the connection groove 11 includes a calibration portion 111 and an inner hexagon portion 112 . The calibration portion 111 is arranged at the slot opening and connected to the outer expansion portion 12 . The inner hexagon portion 112 is connected to a side of the calibration portion 111 away from the slot opening.

[0042] The calibration portion 111 gradually reduces its diameter inward from the connection with the outer expansion portion 12 to the connection with the inner hexagonal portion 112 , so that the base can be guided into the calibration portion 111 when being inserted.

[0043] Example 2

[0044] Based on the technical solution in Example 1, the setting method of the fastening bolt 2 is changed, and the diameter of the bolt cap of the fastening bolt 2 is enlarged. On the one hand, the contact area with the model can be increased to improve stability. On the other hand, the larger bolt cap can also be directly screwed by hand, eliminating the use of special tools.

[0045] Example 3

[0046] Based on the technical solution in Example 1, the setting method of the second threaded hole 18 and the first threaded hole 17 is changed, and the two threaded holes are merged into one threaded hole, so that the fastening bolt 2 and the connecting screw of the base share one screw hole from both ends, thereby reducing the processing cost of the substitute body 1.

[0047] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A dental implant substitute, comprising a substitute body (1), characterized in that: A fastening bolt (2) is provided at one end of the substitute body (1), a connecting groove (11) is axially provided at the other end of the substitute body (1), an outer expansion portion (12) extending radially outward is provided at the notch of the connecting groove (11), and an anti-torsion portion (13) is provided on one side of the substitute body (1) close to the fastening bolt (2), and the anti-torsion portion (13) is abutted against the fastening bolt (2).

2. The dental model implant substitute according to claim 1, characterized in that: The outwardly extending portion (12) comprises a limiting surface (121) and a splicing surface (122); the splicing surface (122) starts from the notch of the connecting groove (11) and extends outward to the outside of the outer arc surface of the substitute body (1); and the limiting surface (121) is smoothly connected between the splicing surface (122) and the outer arc surface of the substitute body (1).

3. The dental model implant substitute according to claim 2, characterized in that: The splicing surface (122) comprises an inner inclined surface and an outer inclined surface, the inner inclined surface is connected to the inner wall of the connecting groove (11), and the outer inclined surface is connected to the limiting surface (121), and the connection between the inner inclined surface and the outer inclined surface forms a sealing portion.

4. The dental model implant substitute according to claim 1, characterized in that: The diameter of the anti-torsion portion (13) is smaller than the bolt cap of the fastening bolt (2), and an anti-torsion groove (16) is provided in the anti-torsion portion (13), and the anti-torsion groove (16) is arranged along the axial direction of the substitute body (1).

5. The dental model implant substitute according to claim 4, characterized in that: The anti-torsion groove (16) comprises an arc-shaped groove and a plane groove, and the arc-shaped groove and the plane groove are arranged relatively on the arc surface of the anti-torsion part (13).

6. The dental model implant substitute according to claim 4, characterized in that: A first threaded hole (17) is axially opened at the axis center line position of the anti-torsion portion (13), and the first threaded hole (17) is matched with the screw rod of the fastening bolt (2).

7. The dental model implant substitute according to claim 6, characterized in that: A second threaded hole (18) is axially opened at the bottom of the connecting groove (11); the second threaded hole (18) is coaxially arranged with the first threaded hole (17) and the two are connected.

8. The dental model implant substitute according to claim 1, characterized in that: A fastening groove (21) is provided on one end surface of the bolt cap of the fastening bolt (2) opposite to the screw rod, and the fastening groove (21) is arranged on the axis line of the fastening bolt (2).

9. The dental model implant substitute according to claim 1, characterized in that: The connection groove (11) comprises a calibration portion (111) and an inner hexagon portion (112); the calibration portion (111) is arranged at the slot opening and connected to the outer expansion portion (12); and the inner hexagon portion (112) is connected to a side of the calibration portion (111) away from the slot opening.

10. The dental model implant serving as a substitute according to claim 9, characterized in that: The calibration portion (111) gradually reduces its diameter inward from the point where it connects with the outward expansion portion (12) to the point where it connects with the inner hexagon portion (112).

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