KR101214748B1 - Abutment for implant - Google Patents

Abstract

PURPOSE: An abutment for an implant is provided to improve the beauty of the gum after transplanting an implant. CONSTITUTION: An abutment for an implant comprises a first coupling unit(11), an edge unit(13), and a second coupling unit(12). The first coupling unit is inserted into a fixture. The edge unit is combined with the first coupling unit and touches the gum. The second coupling unit is combined with the edge unit. The edge unit consists of a first margin(14) and a second margin(15).

Description

Abutment for implant

The present invention relates to an implant abutment, and more particularly, to form a spiral margin on the outer circumferential surface of the abutment for mounting the crown, the abutment to the fixture (fixture) In the combined state, the spiral margin exposed to the upper surface of the gingiva can be easily cut and removed, so that the procedure of matching the top of the margin with the surface of the gum can be precisely and easily performed. It relates to an implant abutment to improve the aesthetics of the gum after.

In general, a dental implant is biocompatible with a jawbone that is bulky enough to be wrapped enough, through additional surgery, such as bone graft and bone elongation, to the jawbone at the site of a tooth defect or tooth extraction. It is a dental treatment that restores the function of natural teeth by planting the implant body.

Dental implantation was practiced in ancient times, and artificial teeth made of gold and ivory were used in the 16th and 17th centuries.In the early 20th century, metal implants made of gold, silver, lead, iridium, iron and cobalt alloys were used. Developed.

Subperiosteal and titanium blade implants have been developed and popularized since the 1940s, but have had short life spans and low success rates. Later, in 1982, after a 15-year study of osteoadhesive implants by Branemark of Sweden in Toronto, Canada, the success rate exceeded 90% and became popular worldwide.

Such an implant (implant) is originally meant to replace the restoration when the tissue of the human body is lost, but in the dentist refers to artificial tooth transplantation.

In other words, the implant is implanted into the alveolar bone from which natural teeth have been removed and affixed to the alveolar bone from which natural teeth have been removed. It is a cutting-edge procedure to fix the crown to restore the original function of natural teeth.

The dental implant consists of a fixture placed in the alveolar bone, an abutment fastened to the fixture, and a crown of actual tooth shape mounted on the abutment.

And a healing screw, a healing abutment called a healing screw and a healing abutment, for closing the screw hole formed inside the upper part of the fixture. There are a variety of accessory components such as abutment screws connecting the cements.

Here, the fixture (fixture) corresponding to the root is also known in the art as an artificial tooth, a carcass or a fixture, the abutment is also called abutment or abutment, the crown corresponding to the tooth is an artificial tooth, Crown, also called prosthesis.

Such implants include a threaded implant and a cylindrical implant according to the shape of the implant.

Threaded implants are currently the most preferred because they have a thread in the implant fixture, which increases the initial fixation force and the contact area with the bone, which is advantageous for implant stability and also for the distribution of occlusal loads.

Cylindrical implants gain stability at the surface of the implant fixture and also with retention resulting from structural differences in the jawbone and implant diameter.

On the other hand, implants are implants in the bone that implant the implants into the jawbone according to the position of implantation, implants in the mucosa that are not currently used in the form of button retention in soft tissues, and fixtures and abutments suitable for the jaw surface under the periosteum. Subperiosteal implants, which are composed of an implant, bone penetrating implants that penetrate the bone, and intramuscular implants that are fixed through the root canal after root canal treatment (neural treatment) of natural teeth.

In addition, according to the implantation time, there is an immediate extraction method for extraction immediately after extraction, a delayed immediate placement method for 6-10 weeks after extraction, and a late placement method for 3-6 months after extraction.

In addition, the implant has a one-time operation for simultaneously implanting the root of the implant, that is, the fixture and the upper tooth, that is, the abutment, and after implanting the fixture of the implant first, waiting for the abutment to the bone and then abutment There are two surgery methods to put.

As a conventional technique of a dental implant having a variety of types and methods of treatment such as 'tooth implant system' of the Republic of Korea Patent Office Patent No. 10-0419738 and 'Healing' of the Republic of Korea Patent Registration No. 10-0677870 Abutments and dental implants having the same, and 'implants for flapless surgery or mini-flap surgery' of the Republic of Korea Patent Publication No. 10-0879777 has been disclosed.

Meanwhile, the general procedure of the most commonly used screw implants will be briefly described.

First, a partial anesthesia using an anesthetic syringe is applied to the gum area where the fixture is to be placed, and then a gingiva is cut to a length of 3 to 5 mm using a mass.

Then, the inlet gum is opened by opening the diameter of the fixture to determine the position where the fixture is to be placed and then drilled (drilling) to create a screw hole (screw hole) to be implanted in the alveolar bone.

Subsequently, after drilling several times until the size is correct for the fixture diameter, the fixture is screwed into the screw hole and placed in the alveolar bone. At this time, the upper surface of the fixture is parallel to the surface of the alveolar bone.

Here, according to the judgment of the operator, when the procedure is performed by a two-stage operation that completely covers the gum and sutures so that the fixture is invisible, the cover screw is completely embedded in the screw hole of the implantation part, and the upper surface of the cover screw Parallel to the surface and the planar portion of the mounting portion.

The first step of surgery is completed by suturing the inlet of the cut gum so that the fixture and the cover screw are embedded in the gum.

After the first stage of operation, the healing period for bone adhesion between the fixture and the alveolar bone needs at least 2 to 3 months for the lower jaw and at least 4 to 6 months for the upper jaw.

If the alveolar bone is weak at the place of implantation, it takes another one to two months, and bone transplantation usually requires a healing period of six to nine months.

Here, if it is determined that the healing is sufficiently performed after the implantation, the second stage surgery is performed.

Stage 2 surgery is usually performed by local anesthesia. After anesthesia, the gums are incised, the gums are opened to show the fixture, the satisfactory bone adhesion is checked, the cover screw is removed, and the healing cap for healing the gums is removed. cap or healing abutment and suture the gum.

After the gums heal, remove the healing cap or healing abutment, combine the abutments for crown mounting, proceed with the tooth modeling and crown pore process, and finally attach the crown to the abutment to complete the implant procedure. Will be done.

In the conventional procedure of the screw-type implant as described above, when combining the abutment for mounting the crown is performed to ensure that the upper end of the margin formed on the outer peripheral surface of the abutment coincides with the surface of the gum.

Here, the conventional technology of the implant abutment 'an implant abutment' of the Republic of Korea Patent Office Patent Registration No. 10-0970746 and the 'custom implant of the Korean Patent Office Publication No. 10-0898726 Butt structure, and 'Abutment for implants' of the Republic of Korea Patent Application Publication No. 10-2011-0096612 have been disclosed.

Here again, the configuration of the conventional abutment will be described first in order to explain a procedure in which the upper end of the abutment portion coincides with the surface of the gum.

As shown in FIG. 1, the conventional abutment 100 coupled to the upper portion of the fixture 200 implanted in the implantation hole 410 of the alveolar bone 400 is formed so that the diameter of the outer circumferential surface thereof becomes smaller toward the lower side. The fixture coupling part 110 inserted into the insertion hole 210 of the fixture 200 extends from the upper end of the fixture coupling part 110 so that the diameter of the outer circumferential surface thereof becomes larger toward the upper side so that the gum 420 is in contact. Margin portion 130 and extending from the upper end of the margin portion 130 is formed as the diameter of the outer circumferential surface becomes smaller toward the upper side is composed of a crown coupling portion 120 to which the crown 300 is mounted.

In the conventional abutment 100 configured as described above, when the fixture insertion portion 110 of the abutment 100 is inserted into the insertion hole 210 of the fixture 200, the portion of the healed gum 420 is margined. In contact with the outer circumferential surface of the portion 130.

The healed gum 420 portion has the same shape as the outer circumferential surface of the healing cap or healing abutment, and is typically healed in a circular hole shape to be in contact with the circumference of the marginal portion 130 of the abutment 100. will be.

Here, if the upper surface of the margin portion 130 of the abutment 100 and the surface of the gum 420 do not match, the margin portion 130 of the abutment 100 located between the gum 420 and the crown 300. ) Exposing the external aesthetics, food is jammed in the exposed space and cause periodontal disease, so that the procedure to match the top of the margin portion 130 and the surface of the gum 420.

Here again, the thickness of the gum 420 varies from person to person, but in the case of a gum degenerate patient, the thickness of the gum 420 is generally 1 mm or less, generally 2 to 3 mm, and a person having a gum 420 having a maximum thickness of 7 mm. In addition, the thickness of the gum 420 may vary depending on the area of the gum 420.

As the thickness of the gum 420 is not constant as described above, the margin part 130 of the abutment 100 is made to match the upper surface of the margin part 130 of the abutment 100 and the surface of the gum 420. The cutting process will proceed.

For the procedure of cutting the margin portion 130 of the abutment 100, first, the operator confirms that the parts of the gum 420 that are radially contacted around the outer circumferential surface of the margin portion 130 are high and low, and then the margin portion. While cutting the upper or inclined outer circumferential surface of 130 is to be treated to match the surface of the high and low portions of each gum 420.

However, the procedure of cutting the margin portion 130 of the conventional abutment 100 has the trouble of repeatedly cutting the upper and outer circumference of the margin portion 130 according to the height of the gum, When the cutting surface is excessively cut in the repeated cutting process, there was a problem that needs to be replaced again by replacing the abutment.

KR Patent Publication No. 10-0970746 (2010.07.09) Abutment for implants. KR Patent Publication No. 10-0898726 (2009.05.14) Customized abutment structure of the implant. KR Publication No. 10-2011-0096612 (2011.08.31) Abutments for implants. KR Patent Publication No. 10-0419738 (2004.02.10) Tooth implant system. KR Patent Publication No. 10-0677870 (January 26, 2007) Healing abutment and dental implants provided with the same. KR Patent Publication No. 10-0879777 (2009.01.14) Implants for flapless or mini-flap surgery.

The present invention was devised to solve the problem of the procedure of cutting the margin of the conventional abutment for matching the top of the margin of the abutment and the surface of the gum, forming a spiral margin on the outer peripheral surface of the abutment In this case, the abutment is coupled to the fixture so that the spiral margin exposed to the upper surface of the gum can be easily cut and removed, so that the procedure of matching the top of the margin with the surface of the gum can be accurately and easily performed. It is an object of the present invention to provide a new type of implant abutment that can improve the esthetics of the gums after the implant procedure.

According to a feature of the present invention for achieving the above object, the present invention includes a first coupling portion inserted into the fixture on the upper surface of the fixture to be placed in the alveolar bone;

A margin part extending upward from an upper end of the first coupling part to be integrally formed with the first coupling part, and the gum contacting the outer circumferential surface thereof;

An upper portion extending from an upper end of the margin portion to be integrally formed with the margin portion, and including a second coupling portion having a crown coupled to an outer circumferential surface thereof;

A margin portion formed to be inclined so that the diameter of the outer circumferential surface becomes larger toward the upper side from the upper end of the first coupling portion, and the first margin portion having a diameter of the upper end of the outer circumferential surface larger than the lower diameter of the second coupling portion;

An abutment for an implant, comprising: a second margin portion extending upward from an upper end of the first margin portion to form a constant pitch along the outer circumferential surface of the second coupling portion, and protruding helically.

In such an implant abutment of the present invention, the implant abutment is characterized in that the length of the first margin is 1 mm to 3 mm as a problem solving means.

The length of the second margin is 1 mm to 4 mm, and the implant abutment is a problem solving means.

And the pitch of a 2nd margin part uses an implant abutment characterized by the problem of 0.5 mm-1 mm.

As described above, according to the implant abutment according to the present invention, by forming a spiral margin that protrudes at a constant pitch along the outer circumferential surface of the coupling portion on which the crown is mounted, the operator in the state where the abutment is coupled to the fixture By checking and removing the spiral margin exposed to the upper surface of the gum, the procedure of matching the surface of the gum with the upper end of the spiral margin can be performed accurately and easily.

By performing the procedure so that the upper end of the spiral margin and the surface of the gum exactly match, the abutment margin is prevented from being exposed between the crown and the gum and the effect of improving the esthetics of the gum after the implant procedure is expected.

1 is a cross-sectional view for explaining a conventional implant abutment.
Figure 2 is a perspective view of the implant abutment according to a preferred embodiment of the present invention.
3 is a cross-sectional view of the implant abutment according to a preferred embodiment of the present invention.
Figure 4 is a cross-sectional view showing a state in which the implant abutment in accordance with a preferred embodiment of the present invention coupled to the fixture placed in the alveolar bone.

Prior to the detailed description of the technical idea of the implant abutment of the present invention,

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to be limited to the specific embodiment of the present invention, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals are used for like elements in describing each drawing.

For reference, terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly the second component may be referred to as the first component, and 'and / or' The term is meant to include any one of a plurality of related listed items or a combination of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

A singular expression includes a plural expression unless the context clearly indicates otherwise.

In this application, the terms "comprises", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms identical to those defined in the commonly used dictionaries shall be construed to have a meaning consistent with the meaning of the relevant technology in the context and shall not be construed in an ideal or excessively formal sense unless explicitly defined in this application. Do not.

Hereinafter, an implant abutment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the detailed description, like reference numerals designate like elements or the same reference numerals.

Meanwhile, in the drawings and the detailed description, illustrations and references to configurations and operations that can be easily recognized by those skilled in the art from general implant abutments are simplified or omitted.

Particularly, in the drawings and the detailed description of the drawings, detailed description and illustration of elements and structures of elements that are not directly related to the technical features of the present invention are omitted and only a technical structure related to the present invention is shown briefly .

In addition, although the size ratio between elements is somewhat different from each other in the drawings, or the size between components coupled to each other is differently expressed, the difference in representation on the drawings may be easily understood by those skilled in the art. The descriptions are omitted since they are easily understood.

Hereinafter, a preferred embodiment of the implant abutment according to the present invention will be described in detail with the accompanying drawings.

Figure 2 is a perspective view of the implant abutment according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view of the implant abutment according to a preferred embodiment of the present invention, Figure 4 is a preferred embodiment of the present invention A cross-sectional view showing a state in which the implant abutment is coupled to the fixture placed in the alveolar bone.

Implant abutment 10 according to a preferred embodiment of the present invention is the first coupling portion 11 is inserted into the interior of the fixture 20 in the upper surface of the fixture (20) to be implanted in the alveolar bone (40) Wow; A margin part 13 extending upwardly from an upper end of the first coupling part 11 and integrally formed with the first coupling part 11, wherein a margin part 13 is in contact with a gingiva 42 on an outer circumferential surface thereof; Extending upward from the upper end of the margin portion 13 is formed integrally with the margin portion 13, characterized in that consisting of a second coupling portion 12 is coupled to the crown (crown: 30) on the outer peripheral surface.

In particular, in the implant abutment 10 of the present invention, the margin portion 13 is formed to be inclined so as to increase the diameter of the outer peripheral surface toward the upper side from the upper end of the first coupling portion 11, the diameter of the upper end of the outer peripheral surface is It is characterized in that it comprises a first margin portion 14 formed larger than the lower diameter of the second coupling portion 12.

In addition, the second margin part 15 extends upward from the upper end of the first margin part 14 to form a constant pitch P along the outer circumferential surface of the second coupling part 12 and protrude spirally. It has the biggest feature.

In the implant abutment 10 according to the preferred embodiment of the present invention, the length of the first margin portion 14 is preferably 1mm to 3mm.

In addition, in the implant abutment 10 according to the preferred embodiment of the present invention, the length of the second margin portion 15 made of a spiral section is preferably 1 mm to 4 mm, and the second margin part 15 is The pitch P is preferably 0.5 mm to 1 mm.

The implant abutment 10 of the present invention having the above-described structural features will be described in detail together with the process of coupling to the fixture 20.

The implant abutment 10 of the present invention is coupled to an upper portion of the fixture 20 that is placed in the alveolar bone 40 at the site of the tooth defect.

The abutment 10 of the present invention is a circular hole (not shown) by the first coupling portion 11 and a healing abutment (not shown) inserted into the insertion hole 21 formed inside the upper portion of the fixture 20 The inner circumferential surface of the gum 42 healed in the form of) is largely divided into a margin portion 13 and a second coupling portion 12 to which an artificial tooth crown 30 is coupled.

As described above, the abutment 10 of the present invention including the first coupling part 11, the margin part 13, and the second coupling part 12 has a first coupling part on an upper surface of the second coupling part 12. A fastening hole 16 penetrating through the lower surface of 11 is formed.

The abutment screw 17 for fixing the abutment 10 to the fixture 20 is inserted into the fastening hole 16 formed in the direction of the center axis of the abutment 10, and the fastening hole 16. A lower portion of the abutment screw 17 is provided with a seating portion (not shown) to which the head (not shown) of the abutment screw 17 is engaged.

The male screw portion (not shown) of the abutment screw 17 penetrating the lower surface of the first coupling portion 11 is screwed into the female screw portion (not shown) formed under the insertion hole 21 of the fixture 20. The abutment 10 is fixedly coupled to the fixture 20.

As described above, a first coupling part 11 inserted into the insertion hole 21 of the fixture 20 is formed at the lower portion of the abutment 10 fixed to the fixture 20 by the abutment screw 17. .

The outer circumferential surface of the first engaging portion 11 of the abutment 10 is formed to be inclined so as to decrease in diameter from the upper side to the lower side.

The outer peripheral surface of the lower end of the first coupling part 11 may be formed in a hexagonal or octagonal shape so as to prevent the first coupling part 11 from being rotated while being inserted into the insertion hole 21 of the fixture 20. desirable.

Here, when the first coupling portion 11 of the abutment 10 is inserted into the insertion hole 21 of the fixture 20, the outer circumferential surface of the first coupling portion 11 and the inner circumferential surface of the insertion hole 21 are formed. It comes in contact with each other.

In addition, when the first coupling part 11 is inserted into the insertion hole 21, the upper end of the first coupling part 11 and the upper surface of the fixture 20 are positioned on the same horizontal line.

On the other hand, the upper portion of the first engaging portion 11, extending upward from the upper end of the first engaging portion 11 is formed integrally with the first engaging portion 11, the inner circumference of the gum 42 on the outer peripheral surface The margin part 13 which contacts is formed.

Here, the gum 42 which contacts the outer peripheral surface of the margin part 13 is demonstrated.

The gum 42 positioned around the upper surface of the fixture 20 is cut to implant the fixture 20 in the alveolar bone 40 during the implant procedure.

Then, when the fixture 40 is implanted in the alveolar bone 40, and the healing cap or healing abutment (not shown) is coupled to the fixture 40, the incised portion of the gum 42 is held in the healing cap or healing abutment. It is in close contact with the outer circumferential surface of the garment and then sutured.

The cut out portion of the gum 42 is healed in contact with the outer circumferential surface of the healing cap or healing abutment during the period for bone adhesion of the fixture 20.

The healed gum 42 region is healed in a circular hole shape and is in contact with the circumference of the marginal portion 13 of the abutment 10 for mounting the crown 30.

Here, the margin portion 13 is composed of the first margin portion 14 and the second margin portion 15, the first margin portion 14 is toward the upper side from the upper end of the first coupling portion (11). The diameter of the outer circumferential surface is formed to be larger than the bottom diameter of the second coupling portion 12 while being inclined to increase the diameter of the outer circumferential surface.

As such, when the upper diameter of the outer circumferential surface of the first margin portion 14 is larger than the lower diameter of the second coupling portion 12, the upper surface of the annular ring shape of the first margin portion 14 is formed.

The length of the first margin portion 14 refers to the height from the top of the first coupling portion 11 to the top surface of the first margin portion 14, which is aligned on the horizontal line with the top surface of the fixture 20. The length of one margin portion 14 is preferably 1mm to 3mm.

The length of the first margin 14 is in consideration that the height of the gum 42 of the general person is 2 to 3mm, the gum 42 is in contact with the second margin 14 as possible to simplify the cutting process. Most preferably, the length of the first margin 14 is 1 mm.

In addition, the second margin part 15 extends upward from the upper surface of the first margin part 14 to form a constant pitch P along the outer circumferential surface of the second coupling part 12 to protrude helically.

The length of the second margin portion 15 means the distance from the upper surface of the first margin portion 14 to the end of the helical protrusion of the second margin portion 15, the length of the second margin portion 15 It is preferable that it is 1 mm-4 mm, and it is preferable that the pitch P of the thread formed in the 2nd margin part 15 is 0.5-1 mm.

The length of the second margin 15 is preferably not to exceed 4mm in view of the adhesive force of the crown 30 to be mounted on the second coupling portion 12, the spiral on the outer peripheral surface of the second coupling portion 12 Thread pitch (P) of the second margin portion 15 is formed so as not to exceed 1mm to finely correspond to the height of the irregular gum 42.

On the other hand, the second engaging portion 12 extending upward from the upper surface of the first margin portion 14 and integrally formed with the first margin portion 14 is formed to be inclined so that the diameter of the outer peripheral surface becomes smaller toward the upper side.

The outer circumferential surface of the second coupling portion 12 extends upward from the upper surface of the first margin portion 14 to form a constant pitch P along the outer circumferential surface of the second coupling portion 12 to protrude spirally. The second margin part 12 is integrally formed.

The first margin exposed to the upper side of the gum 42 surface after coupling the implant abutment 10 according to the preferred embodiment of the present invention as described above to the fixture 20 implanted in the alveolar bone 40. By simply cutting and removing the portion 14 or the second margin portion 15, the procedure of matching the upper surface of the margin portion 13 with the surface of the gum 42 can be easily performed.

Here, the procedure of allowing the top of the margin portion 13 of the abutment 10 according to the present invention to coincide with the surface of the gum 42 will be described.

First, in the state in which the abutment 10 is coupled to the fixture 20, the practitioner checks the height of the gum 42 contacting the margin part 13 of the abutment 10.

In this case, when the gum 42 is in contact with the first margin part 14, the second margin part 15, which is formed in a spiral shape on the second coupling part 12, is cut and removed, and the first margin part ( 14) the first margin is cut to match the surface of the gum 42 to complete the procedure.

As such, when the first marginal portion 11 is cut and the procedure is simply completed, and then the crown 30 is mounted, the lower surface of the crown 30 comes into contact with the upper surface of the first marginal portion 11, The surface of 42 is coincident with the lower surface of the crown 30.

On the other hand, when the gum 42 is in contact with the second margin 15, the second margin 15 exposed on the surface of the gum 42 is cut from the outer peripheral surface of the second engaging portion 15 The procedure is completed so that the top of the second margin 15 and the surface of the gum 42 coincide.

In this way, the second marginal portion 15 exposed on the surface of the gum 42 is cut off and the procedure is simply completed. When the crown 30 is mounted, the upper surface of the second marginal portion 15 is cut. The lower surface of the crown 30 is in contact with each other, and the surface of the gum 42 coincides with the lower surface of the crown 30, thereby improving the aesthetics of the gum 42 after the implant procedure.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the essential characteristics of the invention. will be.

Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. .

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

10: abutment, 11: first coupling part, 12: second coupling part, 13: margin part, 14: first margin part, 15: second margin part, 16: fastener, 17: abutment screw
20: fixture, 21: insertion hole
30: Crown
40: alveolar bone, 41: implantation hole, 42: gum
P: pitch

Claims (4)

A first coupling part inserted into the fixture from an upper surface of the fixture placed in the alveolar bone;
A margin portion extending upward from an upper end of the first coupling portion to be integrally formed with the first coupling portion, and to which gums are in contact with an outer circumferential surface thereof;
An implant abutment extending upward from an upper end of the margin part and integrally formed with the margin part, the second abutment part having a crown coupled to an outer circumferential surface thereof;
The margin portion; A first margin portion formed to be inclined so that the diameter of the outer circumferential surface becomes larger toward the upper side from the upper end of the first coupling portion, and the diameter of the upper end of the outer circumferential surface is larger than the lower diameter of the second coupling portion;
An implant abutment, comprising: a second margin portion extending upward from an upper end of the first margin portion to form a constant pitch along a circumferential surface of the second coupling portion and protruding helically. The method of claim 1,
Implant abutment, characterized in that the length of the first margin portion is 1 ~ 3mm. The method of claim 1,
Implant abutment, characterized in that the length of the second margin portion is 1 ~ 4mm. The method of claim 1,
Implant abutment, characterized in that the pitch of the second margin portion is 0.5 ~ 1mm.

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