KR101173758B1 - Implant unit using hook pin combination structure - Google Patents

Abstract

The present invention is an implant unit consisting of a fixture coupled to the alveolar bone, and an abutment axially coupled to the upper end of the fixture, a hook pin extending in the axial direction in the lower portion of the abutment is formed, the hook is a hook The pin is axially coupled is characterized in that the pin coupling portion is formed to prevent separation.
The present invention by using a hook pin coupling structure other than the conventional screw type, the procedure is easy, the fastening is made in the state where the abutment is seated at the correct position during the procedure, the incision groove 127a of the hook pin By inserting an elastic member in the buffer, the mastic pressure can be buffered as necessary, and when the occlusal force is applied, the stress generated between the fixture and the alveolar bone is reduced to cause a large stress on the surface of the cortical bone, which causes bone loss. By minimizing, the foreign body felt by the patient is minimized, and the life of the implant unit can be extended.

Description

IMPLANT UNIT USING HOOK PIN COMBINATION STRUCTURE}

The present invention relates to an implant unit, and more particularly, to an implant unit having a hook pin coupling structure for fastening fixtures and abutments directly using a hook pin without using a screw fastening method.

In general, artificial teeth are artificially created teeth that are almost identical to human natural teeth in appearance and function, and these artificial teeth are used to replace natural teeth when they are defective by various factors.

In order to replace natural teeth with artificial teeth, three methods of prosthetic, denture, or alveolar bone are required. In the prosthetics, other natural teeth around the teeth must be shaved, so Not only does it bring about damage but also its lifespan is not as long as 10 years.In the case of dentures, it is not only natural tooth damage, but it can also come out of the process of use, and it gives the user a feeling of having a foreign body in the mouth. There is a problem that is inconvenient to use. Therefore, in the case of the prosthetics and dentures, the utilization rate is decreasing.

On the other hand, when artificial teeth are implanted in the alveolar bone, they are hardly distinguishable from natural teeth after they are completed without damaging other natural teeth around them. The implant unit is used as a structure for embedding such an artificial tooth in the alveolar bone.

1 is an exploded perspective view showing a conventional implant unit, Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.

The conventional implant unit as shown in the figure is largely composed of a fixture (10), an abutment (20) and a screw (30).

The implant unit having such a configuration may be classified into an external type and an internal type according to the coupling type of the fixture 10 and the abutment 20. The difference between the two types is as follows. The case where the cross section of the coupling portion of the fixture 10 protrudes to the outside is called an external type, and the case where the cross section of the coupling portion is recessed inside is called an internal type.

This classification is substantially identical in configuration and operation with only differences in shape. 1 to 2 illustrate an implant unit of an external type.

First, the fixture 10 is directly embedded in the alveolar bone (jawbone) to perform a kind of pillar role, the outer diameter surface of the body is formed with a screw thread 11 for screwing into the alveolar bone, the top of the hexagon head 13 is formed, the fastening hole 15 is formed in the vertical direction inside the center of the head (13).

In this case, the screw 30 is fastened to the fastening hole 15 at the upper end of the fixture 10 in a manner of fixing the abutment 20 to the fixture 10.

Next, the abutment 20 serves as a support for mounting an artificial tooth, and at the bottom, a hexagonal guide groove 21 is formed to face the hexagon head 13 of the fixture 10. And, the upper end is formed with a groove 23 for guiding the screw 30 through the shaft.

Then, the screw 30 is formed in the upper head of the driver slot groove of the straight or cross-shaped or hexagonal wrench seat groove is formed.

Referring to the operation of the prior art consisting of the above configuration as follows.

First, the fixture 10 is screwed into the alveolar bone (jawbone). At this time, the alveolar bone is in a state of being holed a little smaller than the outer diameter of the fixture (10).

Next, the abutment 20 is positioned on the fixture 10. At this time, the hexagonal head 13 of the upper portion of the fixture 10 and the hexagonal guide groove 21 inside the lower portion of the abutment 20 are guided to each other to be seated. Thus, the abutment 20 located on the upper portion of the fixture 10 is not rotated.

Next, the screw 30 is penetrated into the groove 23 of the abutment 20 so that the thread of the screw 30 is fastened to the fastening hole 15 of the fixture 10, thereby fixing the fixture 10. And the abutment 20 is to form a fully engaged state to prevent separation.

After fixing the implant consisting of the fixture 10, the abutment 20, and the screw 30 to the alveolar bone in this manner, the abutment 20 is covered with an artificial tooth, thereby artificially damaging the patient's permanent tooth. Replace with teeth.

However, in the conventional implant unit as described above, when the continuous load in the oral cavity is repeated by the practitioner chewing and ingesting food, the screw 30 vibrates finely, and the vibration width gradually increases. The self-rotation is performed to loosen the screw coupling state, which generates a play between the fixture 10 and the abutment 20, causing the abutment 20, that is, the artificial tooth to shake, so that the patient can chew food smoothly. There was a problem that could not be, and cause undesirable chewing pressure around the artificial teeth.

In addition, in the prior art as described above, when the abutment 20 is fastened to the fixture 10, a problem may occur in which the screw 30 is fastened in a state in which the correct fastening position is not obtained. In some cases, the alveolar bone was damaged.

In addition, the implant unit having the same structure as in the prior art had a lot of difficulties in fastening the screw 30 in a narrow oral space, especially in the case where the surgical site is located on the molar side or the mouth can not be wide open. This was a difficult problem.

In addition, the prior art had a problem that it is difficult to measure the exact number of revolutions when the screw 30 is fastened. That is, not only the bone density or bone strength is wrong, but the fastening force is changed depending on the subjective judgment of the operator, thereby unintentionally damaging the alveolar bone.

In addition, it may not have a structure capable of buffering the mastication pressure may cause destruction of the alveolar bone when excessive mastication pressure is applied.

The implant unit of the prior art having such a problem was inconvenient to recombine fixtures and abutments, and there was a problem in that the patient suffered physical pain and mental stress as well as financial and time damages caused by the recombination procedure. .

An object of the present invention for solving the problems of the prior art by using a hook pin coupling structure rather than the conventional screw type, the procedure is simple, and the fastening is made in the state where the abutment is seated in the correct position during the procedure The elastic member may be inserted into any one of the abutment grooves 127a of the hook pins or the abutment sites coupled with the fixtures to buffer the mastication pressure as necessary.

Another object of the present invention is to provide a structure that can buffer the mastication pressure, it is possible to make shorter than the existing implant unit, which is to implant a long implant in the jaw forcefully, the procedure fails or damage the nerve Significantly reduce the risk of sequelae, can eliminate the need for bone (bone) implants, and bring about the saving of bone graft material to significantly reduce the operating costs.

Another object of the present invention is to buffer the mastication pressure to obtain a better result even in patients with weak bone, and to allow the prosthetic procedure sooner than the existing system after the implant procedure.

Another object of the present invention to prevent the physical and mental pain and economic loss caused by loosening of the screw according to the existing implant treatment method to the patient himself, and to the dentist to bear the burden of the heart due to the operation failure (re-treatment) It is possible to build a trust relationship between the patient and the doctor through a more stable procedure.

An object of the present invention as described above is in the implant unit consisting of a fixture 110 coupled to the alveolar bone, and an abutment 120 axially coupled to the upper end of the fixture 110, the abutment 120 Hook pins 127 extending in the axial direction is formed at the lower portion of the hook 110, the hook pin 127 is hook pin 127 is hooked, characterized in that the pin coupling portion 115c is formed to prevent the separation is formed It can be achieved through an implant unit having a coupling structure.

In addition, the hook pin 127 may be formed with a cutting groove 127a radially divided based on the axis center.

At this time, the cross-sectional shape of the cutting groove 127a may be made of any one of a "+,-, Y" shape.

In addition, the elastic member 129 may be installed in the cutting groove 127a.

In addition, the concave-convex portion 128 may be formed at the lower end of the hook pin 127.

In this case, the uneven portion 128 may form a band-shaped protrusion 128a and a groove 128b around the hook pin 127.

In addition, the diameter of the protrusion 128a may be larger than the diameter of the hook pin 127.

In addition, the diameter of the protrusion 128a may be smaller than or equal to the diameter of the hook pin 127, and the groove 128b smaller than the diameter of the protrusion 128a may be formed before the protrusion 128a.

In addition, an opposing concave-convex portion 115d may be formed at a lower portion of the pin coupling portion 115c.

In this case, the counter-concave-convex portion 115d may be a band-shaped protrusion and a groove formed in the inner diameter of the pin coupling portion 115c.

In this case, the opposite concave-convex portion 115d may be formed by drilling the upper portion at the bottom of the fixture 110 in the upward direction, and then engaging the peg member 117.

In addition, after fabricating the peg member 117 having the opposing concave and convex portions 115d, the peg member 117 may be axially coupled into the guide hole 115 of the fixture 110.

In this case, the buffer member 130 may be further installed between the puff member 117 and the guide hole 115 of the fixture 110.

In addition, in order to prevent the puff member 117 and the buffer member 130 from being separated, the separation preventing cap 140 may be coupled in one direction of the upper or lower portion of the guide hole 115 of the fixture 110. .

In addition, a groove portion into which the blade end of the extraction mechanism is inserted may be further formed in the body 121 of the abutment 120.

In this case, the groove may be formed at a boundary point where the fixture 110 and the abutment 120 are axially coupled.

The present invention by using a hook pin coupling structure other than the conventional screw type, the procedure is easy, the fastening is made in the state where the abutment is seated at the correct position during the procedure, the incision groove 127a of the hook pin By inserting an elastic member in the buffer, the mastic pressure can be buffered as necessary, and when the occlusal force is applied, the stress generated between the fixture and the alveolar bone is reduced to cause a large stress on the surface of the cortical bone, which causes bone loss. By minimizing, the foreign body felt by the patient is minimized, and the life of the implant unit can be extended.

In addition, the present invention is a structure that is axially coupled in the vertical direction, without using a screw fastening method, it can be equipped with a buffer structure that can buffer the mastication pressure can be made shorter than the existing implant unit, which has a length Forcibly implanting long implants into the jaw can significantly reduce the risk of unsuccessful or damaging nerves and cause serious sequelae, eliminating the need for bone grafts, and saving on bone graft material It has an effect that can greatly save.

In addition, the present invention can buffer the mastication pressure to obtain a better result even in patients with weak bone, and after the implant procedure, it becomes possible to prosthetic procedure sooner than the existing system.

In addition, the present invention allows the patient to fundamentally prevent physical and mental pain and economic loss due to the loosening of the screw according to the existing implant treatment method, the dentist can reduce the burden of heart due to surgical failure (re-operation) By doing so, it is effective to build a trust relationship between the patient and the doctor through a more stable procedure.

1 is an exploded perspective view showing a conventional implant unit.
Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.
Figure 3 is an exploded perspective view showing the overall structure of the implant unit according to an embodiment of the present invention.
4 is a perspective view of the implant unit combined according to an embodiment of the present invention.
Figure 5 is an exploded cross-sectional view showing the internal structure of the implant unit according to an embodiment of the present invention.
6 is an exploded cross-sectional view illustrating the fixture structure of FIG. 5;
Figure 7 is a cross-sectional view showing the internal structure of the implant unit according to an embodiment of the present invention.
Figure 8 is an exploded cross-sectional view showing the internal structure of the implant unit according to another embodiment of the present invention.
9 is an exploded cross-sectional view illustrating the fixture structure of FIG. 8;
Figure 10 is a cross-sectional view showing the internal structure of the implant unit according to another embodiment of the present invention.
11 to 14 is a view showing a modified example of the hook pin structure as another embodiment of the present invention.
15 and 16 are views showing an example in which a cushioning member is installed between a puff member and a fixture as another embodiment of the present invention.
FIG. 17 is a plan view illustrating a structure in which opposing concave-convex portions of a peg member are formed as another embodiment of the present invention; FIG.

Hereinafter, with reference to the accompanying drawings for the configuration and operation according to a preferred embodiment of the present invention will be described in detail.

An implant unit having a hook pin coupling structure according to an embodiment of the present invention as shown in FIGS. 3 to 7 is largely composed of a fixture 110 and an abutment 120.

A detailed configuration of the fixture 110 will be described below.

The fixture 110 is directly buried in the alveolar bone (jawbone) to perform a kind of pillar role, the thread 111 for screwing the alveolar bone is formed on the entire outer diameter surface of the body, the upper end of the body into the center of the shaft Grooved to form a guide hole 115 for engaging the abutment 120.

In this case, a drill portion 113 may be formed at the tip of the thread 111.

The abutment 120 will be described below.

The abutment 120 is combined with the fixture 110 to serve as a support for mounting the artificial tooth, the anti-rotation portion of the fixture 110 in the lower portion of the body 121 is formed in a conical shape 125) is formed.

The anti-rotation part 125 may be formed in a polygon, and in the drawing, a hexagonal shape is shown as an example. The anti-rotation unit 125 is a structure for fixing the setting position of the abutment 120, it may be implemented as a projection structure.

In addition, a hook pin 127 is extended to a lower portion of the anti-rotation part 125.

The hook pin 127 forms an incision groove 127a elongated with respect to the center of the shaft, and the incision groove 127a may be one of "+,-, Y" shapes.

Of course, the hook pin 127 can also be produced by cutting four or more.

The hook pins 127 cut into several pieces have a structure that can be elastically deformed or restored by an external force.

At this time, it is possible to insert and install the elastic member 129 in the incision groove 127a, the elastic member 129 can be manufactured as a rubber material, buffer the mastication pressure, or the restoring force of the hook pin 127 To serve as a support.

That is, the hook pin 127 is divided into a plurality of pieces, it is possible to retract or open the gap by the interval of the cutting groove (127a).

The guide hole 115 of the fixture 110, to which the abutment 120 having the structure as described above is axially coupled, is processed into a multi-step groove shape, and inclined to guide the registration of the abutment 120 from the entrance. A guide part 115a is formed, and the anti-rotation guide part 115b is formed to extend below the inclined guide part 115a to be matched with the anti-rotation part 125 of the abutment 120. The pin coupling portion 115c is extended to the lower portion of the prevention guide portion 115b and coupled to the hook pin 125 of the abutment 120 to prevent separation.

At this time, the anti-rotation guide 115b is formed to correspond to the shape of the anti-rotation portion 125 of the abutment 120, the figure shows an example made in a hexagonal shape.

The opposite concave-convex portion 115d is formed at the lower portion of the pin coupling portion 115c, and the end of the hook pin 127 is caught in the concave-convex convex portion 115d to prevent the detachment.

In this case, in order to form the opposing concave-convex portion 115d in the fixture 110, a configuration of a separate peg member 117 as shown in FIGS. 5 to 7 may be added.

That is, the drill 110 may be drilled upward from the bottom of the fixture 110 to form the counter-concave and convex portions 115d, and then, the separately manufactured puff member 117 may be coupled to integrate the fixture 110 structure.

In this case, the puff member 117 may be fitted with the fixture 110 or screwed together, thereby preventing the contaminants inside the fixture 110 from leaking to the outside.

In this case, the puff member 117 and the fixture 110 may be welded to be sealed.

The abutment 120 according to the embodiment of the present invention having the configuration as described above for the abutment used for overdenture, or the temporary abutment used for the first surgery, or for the cover It may be any one of a cap.

Referring to the operation of the present invention having the above configuration as follows.

First, the fixture 110 is coupled to the alveolar bone (jawbone), and then, when the fixture 110 is located in the alveolar bone, the abutment 120 is positioned at the upper end thereof. At this time, the rotation preventing portion 125 of the abutment 120 is coupled to the rotation preventing guide portion 115b of the fixture 110 to match the position, and then to prevent the rotation.

Here, before the anti-rotation part 125 and the anti-rotation guide part 115b are coupled, the hook pin 127 on the side of the abutment 120 is along the pin coupling part 115c on the fixture 110 side. Axially coupled.

At this time, the hook pin 127 is divided into a number of pieces, while the end is closed while passing through the pin coupling portion 115c, and the end of the hook pin 127 passes through the pin coupling portion 115c to face each other. Entering the concave-convex portion 115d is opened to prevent the abutment 120 from being artificially separated from the fixture 110.

In this case, the body 121 of the abutment 120 coupled to the fixture 110 is axially coupled in a state in which an artificial tooth is formed.

As described above, the abutment 120 of the present invention coupled to the hook pin may be separated by lifting in a vertical direction by applying an artificial force while being axially coupled to the fixture 110.

At this time, it is possible to insert and separate the lever-shaped take-out mechanism between the abutment 120 and the coupling portion of the fixture 110.

Therefore, the body 121 of the abutment 120 may further form a groove for inserting the blade end of the ejection mechanism.

An implant unit having a hook pin coupling structure according to another embodiment of the present invention as shown in FIGS. 8 to 10 is largely composed of a fixture 110 and an abutment 120.

Another embodiment of the present invention as shown in the figure has a difference in the configuration of the fixture 110, which will be described as follows.

8 to 10, the hook pin 125 of the abutment 120 in the guide hole 115 of the fixture 110 is axially coupled to the abutment 120 having the structure as described above. The pin coupling portion 115c and the opposing concave-convex portion 115d are formed so as to be separated and prevented from being separated from each other. It can be coupled to the shaft in the guide hole 115 of the).

In this case, the cutout member 117 may be fitted with the fixture 110 or screwed together, and may be sealed by welding between the cutout member 117 and the fixture 110.

11 to 14 is a view showing a modified example of the hook pin structure as another embodiment of the present invention, the hook pin 127 as shown in the drawing is divided in the radially centered on the center of the cutting groove 127a may be formed, and the cross-sectional shape of the cutout groove 127a may be one of “+, −, Y” shapes.

In addition, the elastic member 129 may be installed in the cutting groove 127a.

In addition, the concave-convex portion 128 may be formed at the lower end of the hook pin 127. The concave-convex portion 128 forms a band-shaped protrusion 128a and a groove 128b around the hook pin 127. can do. In this case, the diameter of the protrusion 128a may be larger than the diameter of the hook pin 127 as shown in FIGS. 13 and 14, and the diameter of the protrusion 128a is the hook pin 127 as shown in FIGS. 11 and 12. It may be formed smaller than or the same as the diameter.

As such, when the diameter of the protrusion 128a is smaller than or equal to the diameter of the hook pin 127, the groove 128b smaller than the diameter of the protrusion 128a may be formed before the protrusion 128a.

In addition, an opposite concave-convex portion 115d may be formed at a lower portion of the pin coupling portion 115c, and the opposite concave-convex portion 115d may be a band-shaped protrusion and a groove formed at an inner diameter of the pin coupling portion 115c. Can be.

At this time, the opposite concave-convex portion 115d is formed by drilling in the upper direction from the bottom of the fixture 110, and is formed by combining the concave member 117, or the concave-convex portion 115d formed with the concave member ( After manufacturing 117, the puff member 117 may be axially coupled to the guide hole 115 of the fixture 110.

15 and 16 illustrate still another example of the present invention, in which a cushioning member is installed between a puff member and a fixture.

As shown in the drawing, the present invention may allow the cushioning member 130 to be further installed between the merging member 117 and the guide hole 115 of the fixture 110. The merging member 117 and the cushioning member ( In order to prevent the 130 from being separated, the separation preventing cap 140 may be coupled in one direction of the upper or lower portion of the guide hole 115 of the fixture 110.

15 illustrates an example in which the separation preventing cap 140 is formed on the upper portion of the guide hole 115, and FIG. 16 illustrates an example in which the separation preventing cap 140 is formed in the lower portion of the guide hole 115.

FIG. 17 is a plan view illustrating a structure of forming the opposing concave and convex portions of the cladding member, as shown in FIG. 17. In addition, the opposing uneven parts 115d may be divided.

In the figure, an example is formed in four directions.

In addition, the present invention may be formed in the body 121 of the abutment 120, the groove portion is inserted into the blade end of the ejection mechanism is further formed, the fixture portion and the abutment 120 shaft coupling It can be formed at the boundary point.

The present invention according to the above configuration by using a hook pin coupling structure other than the conventional screw type, the procedure is easy, and the fastening is made in the state where the abutment is seated at the correct position during the hook pin, Cortical bone is a cause of alveolar bone absorption by inserting an elastic member into the incision groove 127a, thereby buffering mastication pressure as needed, and reducing stress generated between the fixture and the alveolar bone when an occlusal force is applied. By minimizing the large stress on the surface, it minimizes the foreign body feeling felt by the patient, it is possible to increase the service life of the implant unit.

In addition, the present invention is a structure that is axially coupled in the vertical direction without using a screw fastening method, it is possible to manufacture shorter than the conventional implant unit, which is a procedure that fails to implant the long implant in the jaw forcefully It can significantly reduce the risk of damaging the nerves and cause serious sequelae, eliminating the need for bone grafts, and significantly reducing the cost of surgery by bringing about bone graft material.

In addition, the present invention can buffer the mastication pressure to obtain a better result even in patients with weak bone, and after the implant procedure, it is possible to prosthetic treatment sooner than the existing system, the present invention is a conventional implant procedure for the patient himself The physical and mental pain and the economic loss caused by the loosening of the screw method can be fundamentally prevented, and the dentist can reduce the burden of the heart due to the operation failure (re-treatment). You can build trust between them.

As the present invention having the above-described configuration and operation can be variously modified and changed by those skilled in the art using the various embodiments described above, the true technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but the patent claims It should be determined by the scope.

110: fixture 111: thread
113: drill portion 115: guide hole
115a: tilt guide 115b: anti-rotation guide
115c: pin coupling portion 115d: opposing concave-convex portion
117: puff member 120: abutment
121: body 123: groove portion
125: anti-rotation unit 127: hook pin
128: uneven portion 129: elastic member
130: buffer member 140: release prevention cap

Claims (16)

In the implant unit consisting of a fixture 110 coupled to the alveolar bone, and an abutment 120 coupled to the upper end of the fixture 110,
A hook pin 127 extending in the axial direction is formed in the lower portion of the abutment 120, and a pin coupling portion 115 c is formed in the fixture 110 to prevent the hook pin 127 from being axially coupled to the fixture 110. Become,
The hook pin 127 has a hook pin coupling structure, characterized in that the cutting groove 127a is formed radially divided based on the center of the shaft, and the elastic member 129 is installed in the cutting groove 127a. Implant Unit. delete The method of claim 1,
Implant unit having a hook pin coupling structure, characterized in that the cross-sectional shape of the cutting groove (127a) is made of any one of the "+,-, Y" shape. delete The method according to any one of claims 1 to 3,
Implant unit having a hook pin coupling structure, characterized in that to form a concave-convex portion (128) at the bottom of the hook pin (127). The method of claim 5,
The uneven portion 128 is an implant unit having a hook pin coupling structure, characterized in that to form a band-shaped protrusion (128a) and the groove portion (128b) around the hook pin (127). The method of claim 6,
Implant unit having a hook pin coupling structure, characterized in that the diameter of the protrusion (128a) is larger than the diameter of the hook pin (127). The method of claim 6,
The diameter of the protrusion 128a is smaller than or equal to the diameter of the hook pin 127, and the hook pin is characterized in that the groove 128b smaller than the diameter of the protrusion 128a is formed before the protrusion 128a. Implant unit having a coupling structure. In the implant unit consisting of a fixture 110 coupled to the alveolar bone, and an abutment 120 coupled to the upper end of the fixture 110,
A hook pin 127 extending in the axial direction is formed in the lower portion of the abutment 120, and a pin coupling portion 115 c is formed in the fixture 110 to prevent the hook pin 127 from being axially coupled to the fixture 110. Become,
Implant unit having a hook pin coupling structure characterized in that the concave and convex portion (115d) is formed in the lower portion of the pin coupling portion (115c). 10. The method of claim 9,
The opposite concave-convex portion (115d) is an implant unit having a hook pin coupling structure, characterized in that the band-shaped protrusions and grooves formed in the inner diameter of the pin coupling portion (115c). The method of claim 10,
The opposite concave-convex portion (115d) is formed by drilling in the upper direction from the bottom of the fixture 110, the implant unit having a hook pin coupling structure, characterized in that formed by engaging the puff member (117). The method of claim 10,
After manufacturing the peg member 117 formed with the concave and convex portions 115d, the hook pin coupling structure, characterized in that the peg member 117 is axially coupled in the guide hole 115 of the fixture 110 Having an implant unit. The method of claim 12,
Implant unit having a hook pin coupling structure, characterized in that the buffer member 130 is further installed between the puff member (117) and the guide hole 115 of the fixture (110). The method of claim 13,
Hooks, characterized in that the separation prevention cap 140 is coupled in any one direction of the upper or lower guide hole 115 of the fixture 110 in order to prevent the separation member 117 and the shock absorbing member 130 is separated. Implant unit having a pin coupling structure. The method of claim 1,
The implant unit having a hook pin coupling structure, characterized in that the groove portion is further formed is inserted into the body end 121 of the abutment (120). 16. The method of claim 15,
Implant unit having a hook pin coupling structure characterized in that the groove is formed at the boundary point that the fixture 110 and the abutment (120) is axially coupled.

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