JP2017196363A - Abutment separation tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve said problems of the present invention, it is provided an abutment separation tool for implant system where although micromovement may be suppressed, an abutment is difficult to be detached and taper fitting is realized at a small taper angle, in which an abutment is easily detachable from an implant body.SOLUTION: Upon separation of an implant body from an abutment, an abutment separation tool having configurations that its tip has a bar shape and a male screw shape which is slightly thicker than access hall diameter of the abutment and it further has a screwing structure at an upper part thereof is inserted and screwed so that the screwing configuration of the tool is plastically intruded or tapped into an access hall of the abutment. By further screwing the tool, the tip of the tool reaches the implant body, then the tool tip is pressed onto the implant body so as to push up the abutment along with rotation of the male screw, thereby taper fit between the implant body and the abutment is cancelled, resulting in easily detachment of the abutment.SELECTED DRAWING: Figure 1

Description

Detailed Description of the Invention

  The present invention relates to a tool used for attaching and detaching an abutment used by being connected to a body implant body such as a dental implant.

When a part of the human body is lost due to an accident, illness, or the like, there is a treatment method for complementing the missing part with a denture, an artificial eye, a prosthesis or the like.
In these treatment methods, in the implant treatment, an implant body serving as an anchor is implanted in the bone near the defect portion, and the defect portion is attached to the implant body via a connection device such as an abutment and fixed to the defect portion. .

  Specific examples are given for dental implants. The implant body is implanted in the jawbone at the tooth defect site, and after the bone has healed and the implant body and the jawbone are integrated, an abutment that serves as a support for the prosthesis (crown) is connected to the implant body, and the abutment Put a crown on top and restore occlusal function.

  The structure of a general dental implant including Patent Document 1 is shown in FIGS. FIG. 22 shows the structure of an implant. Implant bodies 26 and 27 have male or female anti-rotation connections 28 and 29 having hexagons and octagons, and abutments 30 and 31 have corresponding females. Alternatively, male connection portions 32 and 33 having hexagons and octagons exist, and after the connection portions are connected to each other, the abutment and the implant body are fixed with screws 34 and 35 as shown in FIG.

  In addition, the crown is cast by casting a frame or crown that matches the shape of the abutment, and the frame is created by building up the tooth shape with porcelain or resin, or by cutting out ceramics etc., and bonding to the abutment Or it screws and finally becomes like FIG.

JP-A-7-275266

  In recent years, in dental implants, since the bone resorption caused by minute movement of the joint portion between the implant body and the abutment, that is, so-called micro-movement occurs, the butt joint in which the joining method matches the surface as shown in FIG. Instead, an increasing number of tapered joint implant systems, such as those shown in FIG. In the case of a taper joint implant system, the implant body and the abutment are firmly fitted like a wedge, so that the micro movement can be suppressed.

  The tapered joint implant system shown in FIG. 25 basically includes an implant body 7, an abutment 6, and a screw 9. The implant body and the abutment each have anti-rotation connection portions 11a and 11 having hexagons and octagons, and connection portions 8a and 8 by taper fitting.

  For tapered joint implant systems, the smaller the taper angle, the stronger the fit. On the other hand, however, when removing the abutment from the implant body, even if the screw is removed, the abutment may bite into the implant body like a wedge and may not be easily removed. Conversely, when the taper angle is large, the abutment can be easily removed, but the effect of suppressing the micro movement is lost.

  In the present invention, in view of the above problems, an abutment separating tool that can easily remove an abutment from an implant body in an implant system having a taper fitting with a small taper angle that can suppress micro-movement but is difficult to remove the abutment. The issue is to provide.

  As a result of diligent investigation to solve the above problems, the present invention has a male screw shape slightly thicker than the access hole diameter of the abutment, which is made of metal as the material and has a rod shape at the tip, and further By using an abutment separation tool with a screw-up structure on the top, the screw bites or taps plastically into the access hole of the abutment, and the tip of the tool presses against the implant body. An abutment separating tool characterized in that the taper fit between the body and the abutment is released and the abutment can be removed.

  That is, in the present invention, after removing the screw connecting the implant body and the abutment, the distal end is a rod shape thinner than the screw hole diameter of the implant body, and the male screw is slightly thicker than the access hole diameter of the abutment at the upper part. By inserting and advancing an abutment separating tool having a shape and further having a screwing structure on the upper part, the screw shape of the tool bites or taps into the access hole of the abutment plastically, Furthermore, by screwing the tool, the tip of the tool reaches the screw hole bottom of the implant body, and then the tool tip presses against the screw bottom of the implant body and the abutment is pushed up as the male screw rotates. The taper fit between the implant body and the abutment is released and the abutment can be easily removed That.

  The tool has a longer overall length from the bottom of the screw hole of the implant body to the tip of the abutment when the implant body and the abutment are connected, and the diameter in the tip direction from the male screw portion is longer than the access hole of the abutment. It is required to have a dimension that does not interfere when the inserted tip reaches the screw hole bottom of the implant body.

  In addition, the tool does not necessarily have the screw removed during use, and may remain in place as long as the screw is removed from the implant body. That is, the screw is in a state of being on the screw hole of the implant body. In that case, the tool tip is pressed against the head of the screw, so the tip diameter of the tool does not have to interfere when inserted into the access hole of the abutment. It may be shorter than the tool used.

  The male threaded part is slightly thicker, approximately the same diameter as the access hole diameter of the abutment, up to +0.2 mm, and the position of the male threaded part is at the bottom of the screw hole in the implant body or the head of the loose screw. It is necessary that the male threaded portion should be installed so as to interfere with the access hole of the abutment by at least 0.1 mm or more, preferably 0.4 mm to 1 mm when contacting the abutment. .

  The shape of the male screw is preferably a screw shape or a tap shape. However, since the purpose is to plastically bite or tapping the access hole of the abutment to integrate the abutment and the tool, it is not necessary to manufacture with a standard screw shape. The diameter, valley shape, etc. can be designed freely.

  In addition to the above, a mechanism for screwing the tool is necessary on the upper part of the tool, but there is no limitation on the shape, for example, a shape that can be connected to a drill or a handpiece, a square or hexagonal concave or convex shape, a plus Examples include a standard shape such as minus, a shape connectable to a ratchet wrench, etc., and a shape of one or a plurality of combinations among the shapes for screwing with fingers.

  According to the tool of the present invention, an abutment and an implant can be obtained by inserting and screwing the tool after removing the screw in a tapered fitting implant body that can suppress micro-movement during use but is difficult to remove the abutment. The body wedge is released and the abutment can be easily removed. Further, in the present invention, since processing into an abutment is not required, if an implant system having a configuration as shown in FIG. It can be used regardless of the type.

  Below, the usage pattern in one Example of the tool which concerns on this invention is demonstrated in detail based on FIGS. 1-4.

  FIG. 1 is a perspective view of a tool according to the present invention. The tool 1 includes a tip portion 2, a male screw portion 3, a shaft portion 4, and a screw advance portion 5. In this configuration, the shaft portion is not always necessary, and the male screw portion 3 may also serve as the shaft portion 4. Further, in this embodiment, the screwing portion 5 has a square convex shape, but other shapes may be used.

  FIG. 2 shows a state in which the abutment 6 and the implant body 7 are connected by taper fitting and a cross-sectional view thereof. In the case of an implant system with a taper joint, wedge fitting is established at the connecting portions 8 and 8a by taper fitting, and even if the screw 9 is removed, the abutment 6 cannot be separated from the implant body 7.

  3 is a cross-sectional view of the state in which the screw 1 is removed from the right side of FIG. 2 using a screwdriver or the like separately prepared, and the tool 1 is inserted. The male screw part 3 can be inserted without resistance until it interferes with the access hole 10 of the abutment 6. In FIG. 3, a screwing tool (a ratchet wrench 12 in this embodiment) is connected to the screwing part 5, the tool 1 is screwed, and the tool tip 2 comes into contact with the screw hole bottom of the implant body 7. It is sectional drawing of the state which carried out. The male screw portion 3 is screwed into the access hole 10 while being plastically bitten or tapped. The abutment 6 is applied with a force to rotate as the tool 1 is screwed, but does not move due to the wedge fitting effect of the taper joint and the presence of the rotation prevention mechanisms 11 and 11a. The right side of FIG. 3 is that the tool 1 is further screwed to bring the tip 2 into pressure contact with the bottom of the screw hole of the implant body, and the abutment 6 is joined to the tool 1 with a screw. It is sectional drawing which shows the place where the wedge fitting of the connection parts 8 and 8a which are movement and taper fitting was released, and the abutment 6 separated from the implant body 7. FIG.

  FIG. 4 is an enlarged view on the right side of FIG. 3, and is a cross-sectional view showing a state where the abutment 6 is separated from the implant body 7. The abutment 6 moves in the direction of lifting from the implant body 7 according to the screw pitch of the male screw portion 3 by further screwing in a state where the distal end portion 2 is pressed against the screw hole bottom of the implant body 7. As a result, the wedge fitting of the connecting portions 8 and 8a by the taper fitting is released, and the abutment 6 is separated from the implant body 7.

  Modification examples of the tool structure will be described in detail with reference to FIGS.

  FIG. 5 is a perspective view of a tool according to the present invention. Like the tool 1, the tool 1 a includes a tip portion 2, a male screw portion 3, a shaft portion 4, and a screwing portion 5. In this configuration, the shaft portion is not always necessary, and the male screw portion 3 may also serve as the shaft portion 4. Further, in this embodiment, the screwing portion 5 has a square convex shape, but other shapes may be used. When the tool 1a is compared with the tool 1, the position of the male screw portion 3 is low, and the screw of the male screw portion 3 is not an access hole of the abutment, but is designed to bite or tapping plastically into the screw through hole. ing.

  6 is a cross-sectional view of the state in which the screw 1 is removed from the right of FIG. 2 using a screwdriver or the like prepared separately and the tool 1a is inserted. The male screw part 3 can be inserted without resistance until it interferes with the screw through hole 13 of the abutment 6. In FIG. 6, a screwing tool (a ratchet wrench 12 in this embodiment) is connected to the screwing part 5, and the tool 1 a is screwed so that the tool tip 2 comes into contact with the screw hole bottom of the implant body 7. It is sectional drawing of the state which carried out. The male screw portion 3 is screwed while plastically biting into or tapping the screw through hole. The abutment 6 is applied with a force to rotate with the screwing of the tool 1a, but does not move due to the effect of the wedge fitting of the taper joint and the presence of the rotation preventing mechanisms 11, 11a. The right side of FIG. 6 shows that the tip 2 is pressed against the bottom of the screw hole of the implant body by further screwing the tool 1a, and the abutment 6 is joined to the tool 1a with a screw. It is sectional drawing which shows the place where the wedge fitting of the connection parts 8 and 8a which are movement and taper fitting was released, and the abutment 6 separated from the implant body 7. FIG.

  FIG. 7 is an enlarged view on the right side of FIG. 6, and is a cross-sectional view showing a state where the abutment 6 is separated from the implant body 7. The abutment 6 moves in the direction of lifting from the implant body 7 according to the screw pitch of the male screw portion 3 by further screwing in a state where the distal end portion 2 is pressed against the screw hole bottom of the implant body 7. As a result, the wedge fitting of the connecting portions 8 and 8a by the taper fitting is released, and the abutment 6 is separated from the implant body 7.

  In the above embodiment of the tool, a method of using the tool after removing the screw connecting the implant body 7 and the abutment 6 is illustrated, but it is not always necessary to remove the screw. There is also a method of using the tool as it is.

  An embodiment of a method for using the tool while leaving the screw as described above will be described in detail with reference to FIGS.

  FIG. 8 is a perspective view of the tool 1b used in the present embodiment, and includes a tip portion 2, a male screw portion 3, a shaft portion 4, and a screwing portion 5 in the same manner as the tool 1. Of this configuration, the shaft portion 4 is not necessarily required, and the male screw portion 3 may also serve as the shaft portion 4. Further, in this embodiment, the screwing portion 5 has a square convex shape, but other shapes may be used.

  FIG. 9 is a cross-sectional view of a state in which the screw 9 is completely loosened using a screwdriver or the like prepared separately from FIG. The screw 9 is on the screw hole of the implant body 7 and is not connected to the implant body 7 and the screw 9.

  FIG. 10 is a sectional view showing a state in which the tool 1b is inserted. Until the male screw portion 3 interferes with the access hole 10, it can be inserted without resistance.

  The left side of FIG. 11 is a cross-sectional view showing a state in which the ratchet wrench 12 is connected to the screwing portion 5 and the tool 1 b is screwed and the tool tip portion 2 is in contact with the screw 9. The male screw portion 3 is screwed while plastically biting or tapping the inside of the access hole 10. The right side of FIG. 11 is that the tool 1b is further screwed to bring the tip 2 into pressure contact with the head of the screw 9, and then the wedge fitting of the connecting parts 8 and 8a, which is a taper fitting, is released and the abutment 6 is implanted. FIG. 6 is a cross-sectional view showing a place separated from the body 7.

  FIG. 12 is an enlarged view on the right side of FIG. At this time, since the screw 9 is not connected to the implant body 7, it is separated from the implant body 7 together with the abutment 6.

  Furthermore, as a modification of the tool structure, an embodiment using an abutment separating tool composed of a plurality of parts will be described in detail with reference to FIGS.

  FIG. 13 is a perspective view of the tool and a cross-sectional view thereof, and is composed of tools 14 and 14 a and a tool 19. The tools 14 and 14 a are used together with the tool 19, and the screw portions 16 of the tools 14 and 14 a are screwed into and connected to the female screw portion 22 of the tool 19.

  The tools 14 and 14 a include a tip portion 15, a male screw portion 16, a shaft portion 17, and a screwing portion 18. Here, the distal end portion 15 needs to be thinner than the female screw portion 22 in order to pass through the female screw portion 22 of the tool 19. Of this configuration, the shaft portion 17 is not necessarily required, and the male screw portion 16 may serve as the shaft portion 17. In this embodiment, the screwing portion 18 has a quadrangular convex shape, but other shapes may be used. The male screw portion 16 is different from the male screw portion (3 in FIG. 1, 3 in FIG. 5, and 3 in FIG. 8) in other embodiments, and has a simple screw structure having no tapping function or the like. It is.

  The tool 19 includes a tap screw portion 20, a screwing portion 21, and a female screw portion 22. The female screw portion 22 is threaded only halfway, but all the holes may be threaded. The tap screw 20 is designed to plastically bite or tapping inside the access hole of the abutment. Further, in the present embodiment, the screwing portion 21 has a quadrangular convex shape, but other shapes may be used.

  FIG. 14 is a cross-sectional view showing a state in which the screw 9 is removed from the above FIG. The tap screw 20 can be inserted without resistance until it interferes with the access hole 10 of the abutment 6.

  FIG. 15 shows that a screwing tool 21 (the ratchet wrench 12 in this embodiment) is connected to the screwing part 21 and the tool 19 is screwed so that the tap screw part 20 plastically bites into the access hole 10 or is tapped. It is sectional drawing which shows the state which advances while screwing. Thereby, the abutment 6 and the tool 19 are integrated.

  FIG. 16 is a cross-sectional view showing a state in which the tool 14 is inserted into the female screw portion 22 of the tool 19. Until the male screw part 16 interferes with the female screw part 22, it can be inserted without resistance.

  FIG. 17 shows that a screwing tool 18 (the ratchet wrench 12 in this embodiment) is connected to the screwing part 18 of the tool 14, and the tool 14 is screwed so that the tip part 15 is in the screw hole bottom of the implant body 7. It is sectional drawing which shows the state which reached | attained.

  In FIG. 18, the tool 14 is further screwed so that the tip 15 is pressed against the bottom of the screw hole of the implant body, and the abutment 6 is integrated with the tool 19 and the tap screw 20. FIG. 6 is a cross-sectional view showing a state where the abutment 6 is separated from the implant body 7 by moving upward and releasing the wedge fitting of the connecting portions 8 and 8a which are tapered fittings.

  FIG. 19 is an enlarged view of FIG. 18 and shows that the abutment 6 is separated from the implant body 7 by releasing the wedge fitting of the connecting portions 8 and 8a which are tapered fittings.

  Further, by using the tool 14a instead of the tool 14, the abutment can be separated while leaving the screw 9 loose in the implant body 7 in the same manner as the tool 1b shown in FIGS. Is possible. The detailed description is omitted because it overlaps with FIGS. 9 to 12 and FIGS. 14 to 19, and the intermediate process is shown in FIG. 20.

  Further, the tool 14 or 14a and the tool 16 can be used after being combined in advance. In this case, the tip 15 of the tool tool 14 or 14a serves as a guide, and the tap screw portion 20 can be smoothly inserted into the access hole 10. Can be guided.

In the embodiment shown in FIGS. 1 to 20, the attachment / detachment in the state of the abutment has been described in order to make the explanation by the drawings easier to understand, but of course, in the state where the upper prosthesis is attached to the abutment The same attachment / detachment mechanism is maintained. Generally, in the patient's oral cavity, the implant body has a form as shown in the left of FIG. 21 and functions in a state where the implant body 7 is implanted in the bone.

  The right side of FIG. 21 is a cross-sectional view thereof, and when it is necessary to remove the abutment for maintenance or the like, the resin ball 25 blocking the hole following the access hole is removed, and the cotton ball protecting the screw. The same state as in FIG.

In addition, even when the tool screw, which is an essential part of the tool according to the present invention, plastically bites or taps into the access hole of the abutment, the bite is almost the same diameter as the access hole diameter of the abutment. It is only slightly thick as ~ + 0.2 mm, and does not affect the connection state between the abutment 6 and the upper prosthesis 23.

    According to the present invention, there is provided an abutment separating tool capable of easily removing an abutment from an implant body in an implant system having a taper fitting with a small taper angle that can suppress micro-movement but is difficult to remove the abutment.

  In addition, since the present invention only needs to design a tool in accordance with the structure of the abutment to be attached and detached and the implant body, it is not necessary to change the existing implant system, and is not limited to the dental field. For example, the skull, jaw, face It can be used for treatment in fields such as restoration surgery, cosmetic surgery, plastic surgery, orthopedic surgery, oral surgery, otolaryngology, and the like.

It is a perspective view which shows the structure in one Example of the tool which concerns on this invention. It is the perspective view and sectional drawing which showed the state which the taper joint type dental implant before using the tool which concerns on this invention was connected. It is a figure explaining the usage form in one Example of the tool which concerns on this invention, The state which is inserting the tool into the implant body (and taper fitting abutment) which removed the screw, and screwing the tool with a ratchet wrench FIG. FIG. 4 is an enlarged view on the right side of FIG. 3, and is a cross-sectional view illustrating a state where the taper fitting is released and the implant body and the abutment are separated. It is a perspective view which shows the structure of the modification of the tool which concerns on this invention. It is a figure explaining the usage type in one Example of the modification of the tool which concerns on this invention, inserts a tool in the implant body (and taper fitting abutment) from which the screw was removed, and screwed the tool with a ratchet wrench. FIG. FIG. 7 is an enlarged view on the right side of FIG. 6, and is a cross-sectional view illustrating a state where the tapered fitting is released and the implant body and the abutment are separated. It is a perspective view which shows the structure in one Example different from FIG. 1 of the tool which concerns on this invention. It is a figure explaining the usage type in one Example different from FIG. 1 of the tool which concerns on this invention, the screw which connects an implant body and an abutment is loosened, and the screw has got on the screw hole of an implant body. It is sectional drawing which shows only a state. It is a figure explaining the usage type in one Example different from FIG. 1 of the tool which concerns on this invention, and is sectional drawing which shows the state which inserted the tool in the implant body (and taper fitting abutment) which loosened the screw | thread. is there. FIG. 2 is a diagram for explaining how the tool according to the present invention is used in an embodiment different from FIG. 1, in which the tool is inserted into a loosened implant body (and a tapered abutment), and the tool is screwed with a ratchet wrench. It is sectional drawing which shows the state made to advance. FIG. 12 is an enlarged view on the right side of FIG. 11, and is a cross-sectional view illustrating a state where the tapered fitting is released and the implant body and the abutment are separated. It is the perspective view and sectional drawing which show the structure of the modification comprised from multiple parts of the tool which concerns on this invention. It is a figure explaining the usage type in the modification which consists of multiple parts of the tool which concerns on this invention. It is a figure explaining the usage type in the modification which consists of multiple parts of the tool which concerns on this invention. It is a figure explaining the usage type in the modification which consists of multiple parts of the tool which concerns on this invention. It is a figure explaining the usage type in the modification which consists of multiple parts of the tool which concerns on this invention. It is a figure explaining the usage type in the modification which consists of multiple parts of the tool which concerns on this invention. It is an enlarged view of FIG. It is a figure explaining the usage pattern at the time of using another part in the modification comprised from multiple parts of the tool which concerns on this invention. It is the perspective view and sectional view which showed the state where the taper joint type dental implant before using the tool which concerns on this invention was connected, and the upper prosthesis is mounted similarly to the case where it is used in an actual oral cavity. FIG. . It is the perspective view which showed the structure of the general butt joint type dental implant. It is the perspective view which showed the state which connected the general butt joint type dental implant. It is the perspective view which showed the state which mounted | wore the general bat joint type dental implant with the crown form. It is the perspective view which showed the structure of the general dental joint type dental implant, and the connected state.

1: Abutment separation tool 2: Tip (tool)
3: Screw part (tool)
4: Shaft (tool)
5: Screwing part (tool)
6: Abutment (taper joint)
7: Implant body (taper joint)
8: Taper (taper joint)
9: Screw (taper joint)
10: Abutment hole (taper joint)
11: Anti-rotation mechanism (taper joint)
12: Ratchet wrench 13: Screw through hole (taper joint)
14: Abutment separation tool A (2-part tool A)
15: Tip (2 parts tool A)
16: Screw part (2 parts tool A)
17: Shaft (2 parts tool A)
18: Screwing part (2 parts tool A)
19: Abutment separation tool B (2 parts tool B)
20: Tap screw (2 parts tool B)
21: Screwing part (2 parts tool B)
22: Female thread (2 parts tool B)
23: Upper prosthesis 24: Resin etc. 25: Cotton ball etc. 26: Implant body (butt joint internal)
27: Implant body (butt joint external)
28: Implant body rotation prevention mechanism (butt joint internal)
29: Implant body rotation prevention mechanism (butt joint external)
30: Abutment (But Joint Internal)
31: Abutment (But Joint External)
32: Abutment rotation prevention mechanism (butt joint internal)
33: Abutment anti-rotation mechanism (butt joint external)
34: Screw (But Joint Internal)
35: Screw (But Joint External)

Claims (5)

  In an internal implant system with a taper fit, when the implant body and the abutment are separated, the tip has a rod shape and a male screw shape slightly thicker than the access hole diameter or screw penetration diameter of the abutment. By using an abutment separating tool having a screw-in structure, the screw plastically bites or taps into the access hole or screw penetration of the abutment, and the tool tip presses against the implant body. By this, the taper fitting between the implant body and the abutment is released, and the abutment can be removed.   After removing the screw that connects the implant body and the abutment, the tip has a male screw shape slightly thicker than the access hole diameter or screw penetration diameter of the abutment with a rod shape thinner than the screw hole diameter of the implant body, Furthermore, by inserting an abutment separating tool having a structure for screwing into the upper part and screwing it, the screw shape of the tool bites or taps into the access hole or screw penetration part of the abutment, Furthermore, by screwing the tool, the tip of the tool reaches the screw hole bottom of the implant body, and then the tool tip presses against the screw bottom of the implant body and the abutment is pushed up as the male screw rotates. The taper fit between the implant body and the abutment is released and the abutment can be easily removed. Abutment separating tool according to claim 1, characterized by Rukoto.   With the screw remaining after the screw that connects the implant body and the abutment is loosened, the tip of the rod is thinner than the access hole diameter of the abutment and has a male screw shape slightly thicker than the access hole diameter of the abutment Further, by inserting an abutment separating tool having a structure for screwing into the upper part and screwing it, the screw shape of the tool bites or taps into the access hole of the abutment, and further the tool As the tool tip reaches the screw head, the tool tip is pressed against the screw head and the abutment is pushed up as the male screw rotates. The taper fitting is released and the abutment can be easily removed. Abutment separation tool.   The parts where the screw plastically bites or taps into the access hole or screw penetration of the abutment, and the screw that remains without being removed after the tip loosens the screw that connects the implant body or the implant body and the abutment Consists of a plurality of parts by pressure-contacting parts, and the part that the screw bites plastically into the access hole or screw penetration part of the abutment or tapping is provided with a structure for screwing and a through female screw hole inside the part, The part that presses the remaining screw without removing the screw that loosens the screw that connects the implant body or the implant body and the abutment has a structure for screwing and a male screw part that is screwed into the part. The abutment separation tool according to claim 1, wherein the abutment separation tool is provided.   The structure for screwing is a shape that can be connected to a drill or handpiece, a square or hexagonal concave or convex shape, a standard shape such as plus or minus, a shape that can be connected to a ratchet wrench, etc. 5. The abutment separating tool according to claim 1, wherein the abutment separating tool is configured by one or a combination of a plurality of shapes.

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