KR20100086561A - Fixture of dental implant - Google Patents

Abstract

PURPOSE: A fixture of dental implant is provided to prevent the movement of the fixture in the initial implantation after a drill hole is drilled in the alveolar bone and to improve the fixing force after completing the fixture implantation. CONSTITUTION: A fixture of dental implant includes a first body part(20) and a second body part(30). The first body part is implanted at the lower region of a drill hole punched in the alveolar bone, wherein a virtual line connecting male screw threads on the outer side is materially prepared in parallel with an axis line of the drill hole. The second body part has larger diameter than the cross-section diameter of the first body part, is expanded to the upper part of the first body part, and is implanted into the upper region of the drill hole.

Description

Fixture of Dental Implants

The present invention relates to a fixture of a dental implant, and more particularly, after drilling a drill hole in the alveolar bone, while preventing the flow of the fixture at the time of initial placement, it is possible to improve the fixing force when the implant is completed. A dental implant fixture.

Implant (implant) refers to a substitute that is originally restored when human tissue is lost, but in the dentist refers to the implantation of artificial teeth. In order to replace the lost tooth roots, artificial roots made of titanium (Titanium), which are not rejected by the human body, are placed in the alveolar bone where the teeth fall out, and then the artificial teeth are fixed to restore the function of the teeth.

In the case of general prosthetics or dentures, the surrounding teeth and bones are damaged over time, but the implants do not damage the surrounding dental tissues, and they have the advantage that they can be used semi-permanently because they have the same function or shape as natural teeth and do not cause tooth decay.

Implants also enhance the function of dentures and improve the aesthetic aspects of dental prosthetic restorations, as well as in single-implant restorations. Furthermore, it can disperse excessive stress on the surrounding supportive bone tissue, which can help stabilize the teeth.

Such implants generally include a fixture that is placed as an artificial root, an abutment that is coupled to the fixture, an abutment screw that secures the abutment to the fixture, and an artificial tooth that is coupled to the abutment. . Here, the healing abutment (not shown) may be coupled to the fixture to maintain the binding state before the abutment is bonded to the fixture, that is, until the fixture is fused to the alveolar bone.

The fixture plays a role of an artificial tooth root as a part to be placed in a drill hole formed after forming a drill hole using a drill or the like at a position where the implant is to be placed.

Such fixtures generally have a shape in which the diameter of the cross section decreases gradually from the top to the bottom. Accordingly, the lower end portion has a smaller width than the upper end portion, so that the conventional fixture can be smoothly introduced into the drill hole formed in the alveolar bone.

However, in the conventional dental implant fixture, due to the structural shape that the diameter of the cross section gradually decreases toward the lower end of the fixture, the fixture flows when the initial placement after drilling the drill hole of the alveolar bone. Fixtures can be placed in the alveolar bone in an undesired direction, which leads to a problem that the delicate implant procedure may fail. In addition, even when the fixture is placed in a desired direction, a small space may be generated between the lower end of the fixture and the alveolar bone, which may lead to improvement in securing a fixed force and preventing flow.

Therefore, it is necessary to develop a fixture of a dental implant with a new structure that can prevent the flow of the fixture when the fixture is first placed in the drill hole of the alveolar bone and maximize the fixing force when the fixture is completed. to be.

An object of the present invention, after drilling a drill hole in the alveolar bone to prevent the flow of the fixture during the initial implantation to maintain the implantation direction of the fixture parallel to the axis of the drill hole (parallel) procedure that can occur during the procedure of the implant It can prevent the failure in advance, and also provide the fixture of dental implant that can secure the stability of the implant procedure by maximizing the fixing force upon completion of the fixation to prevent the flow of the fixture that can occur after the procedure. will be.

The object is, according to the present invention, is implanted in the lower region of the drill hole drilled in the alveolar bone in the oral cavity, the first virtual line connecting the mountains of the male thread formed on the outer surface is provided substantially parallel to the axis of the drill hole Torso; And a male screw thread having a diameter larger than a cross-sectional diameter of the first body portion and provided by a screw curve substantially the same as a male screw thread of the first body portion, formed on an outer side thereof, and extending from an upper end portion of the first body portion. It is achieved by a fixture of a dental implant, characterized in that it comprises a second body portion to be implanted into the upper region of the drill hole.

Here, the second body portion, the connecting body portion is provided to gradually increase the cross-sectional diameter toward the upper portion from the upper end of the first body portion; And it is provided to extend from the upper end of the connecting body portion, the virtual line connecting the mountains of the male thread formed on the outer surface may include a light body portion provided in parallel with the central axis.

The first body may further include a plurality of first cutting edges spaced apart from each other in a circumferential direction of the first body and cut and provided to a predetermined depth.

The second body may further include a plurality of second cutting edges which are spaced apart from each other along a circumferential direction of the second body part and cut away by a predetermined depth.

The second body portion may further include a bevel portion extending from an upper end of the optical body portion, the diameter of which decreases upward.

The first body portion and the second body portion may be integrally manufactured using titanium (Titanium) material.

The first body portion is a narrow body portion is formed in a smaller cross-sectional diameter than the optical body portion, the narrow body portion is formed in parallel over a section from the bottom of the drill hole (parallel) cross section of the narrow body portion It is implanted in the lower hole formed to a diameter smaller than the diameter, the connection body portion is implanted in the connection hole gradually increasing in the direction away from the upper end of the lower hole, the optical body portion, the drill from the upper end of the connection hole It may be parallel to the opening area of the hole, but may be implanted in the upper hole formed to a diameter smaller than the cross-sectional diameter of the optical body portion.

The male threads formed on the outer surface of the first body portion and the second body portion are connected to each other, and may be a regular thread or a plurality of threads.

The male thread may include a vertical section provided substantially parallel to the axis of the drill hole; A lower slope section provided to be inclined downward from a lower end of the vertical section; And an inclination upward from an upper end of the vertical section, and may include an upper inclination section having an inclination of a relatively larger value than an inclination of the lower inclination section.

The lower slope section may be provided to have an inclination of 5 degrees to 20 degrees, and the upper slope section may be provided to have an inclination of 30 degrees to 45 degrees.

In order to reinforce the fixing force of the first body portion to the alveolar bone, the cutting apparatus may further include a plurality of cutting edge portions which are cut to be provided at equal intervals along the circumferential direction of the first body portion.

It is further formed recessed inward from the upper end of the second body portion, the abutment screw for fixing the abutment coupled to the upper portion of the second body portion may further include a coupling portion detachably coupled.

According to the present invention, after drilling a drill hole in the alveolar bone to prevent the flow of the fixture during the initial placement by maintaining the implantation direction parallel to the axis of the drill hole (parallel) the procedure that may occur during the procedure of the implant It can be prevented in advance, and also by maximizing the fixing force upon completion of the implantation to prevent the flow of the fixture that may occur after the procedure can secure the stability for the implant procedure.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a perspective view of a fixture of a dental implant according to an embodiment of the present invention, Figure 2 is a perspective view of Figure 1 from another direction, Figure 3 is a front view of Figure 1, Figure 4 ' 4 is an enlarged view, and FIG. 5 is a view illustrating a shape in which the fixture of the dental implant illustrated in FIG. 1 is introduced into the initial portion of the drill hole of the alveolar bone, and FIG. 6 is the dental illustrated in FIG. Figure showing the shape of the implant inserted into the drill hole of the alveolar bone.

Dental implant according to an embodiment of the present invention, a fixture (10, Fixture, see Figs. 1 to 6) to be placed as an artificial root, abutment (not shown, coupled to the fixture 10) And an abutment screw (not shown) for fixing the abutment to the fixture 10, and an artificial crown (not shown) coupled to the abutment. That is, after implanting the fixture 10 in the drill hole 7 formed in the alveolar bone 5 (see FIG. 5), the abutment is coupled, and a procedure of dental implant is performed by coupling a pre-made artificial crown to the outer surface of the abutment. This can be done. However, the configuration of such an implant is in accordance with the present embodiment, it is obvious that the configuration of the implant can be changed in various ways depending on the implant procedure.

Fixture 10 of the present embodiment is inserted into the drill hole 7 of the alveolar bone 5 (see Fig. 5) formed stepped to play a role as a root. Therefore, this fixture 10 should be coupled to the alveolar bone 5 with a strong fixing force.

Fixture 10 of the dental implant according to an embodiment of the present invention, as shown in detail in Figures 1 to 3, is provided in a parallel structure (parallel) over a section from the bottom to the alveolar bone ( From the first body portion 20, that is, the narrow body portion 20 and the upper end of the narrow body portion 20 of the first body 20 to be made in the correct direction when the initial insertion into the drill hole 7 of 5) The second body portion 30 is formed to have a parallel structure extending in parallel to the inner wall portion of the alveolar bone 5 to form the drill hole 7. Here, male threads 40 having the same screw curve are provided on the outer surfaces of the first trunk portion 20 and the second trunk portion 30.

First, the drill hole 7 of the alveolar bone 5 is formed stepped in two steps by a drill tool. That is, from the surface of the alveolar bone 5 to a predetermined depth is drilled to a diameter substantially the same as the diameter of the narrow body portion 20, and down to a diameter slightly smaller than the diameter of the narrow body portion 20. However, hereinafter, a drill hole portion to which the narrow body portion 20 is coupled for convenience of description is referred to as a lower hole 7b (see FIGS. 5 and 6), and a light body portion (of the second body portion 30). The drill hole portion 31 to which the 31 is coupled is referred to as an upper hole 7a, and the drill hole portion to which the connecting body portion 33 is coupled among the second body portions 30 will be referred to as a connecting hole 7c.

The first torso 20, that is, the narrow torso 20 of the present embodiment, has a substantially same cross-section in all sections, unlike a conventional fixture (not shown) gradually increasing in diameter from the bottom to the top. . That is, the imaginary line 20L (see FIG. 3) connecting the mountains of the male thread 40 formed in the narrow body portion 20 is the axis of the drill hole 7 of the alveolar bone 5 (the axis of the fixture 10). Substantially the same as (50L, see FIG. 3).

In addition, the diameter of the cross section of the narrow body portion 20 is substantially the same as the inner diameter of the upper hole (7a). Therefore, when the narrow body portion 20 having the parallel structure is first introduced into the upper hole 7a, the narrow body portion 20 may be prevented from flowing with respect to the upper hole 7a due to the same diameter. Therefore, when the fixture 10 is first introduced into the drill hole 7 of the alveolar bone 5, it can be introduced in the correct direction.

And, as shown in detail in Figures 5 and 6, when the narrow body portion 20 is introduced through the upper hole (7a) of the alveolar bone 5 into the connecting hole (7c) and lower hole (7b), The inner wall and self-tapping of the alveolar bone 5 forming the connection hole 7c and the lower hole 7b having an inner diameter relatively smaller than the outer diameter of the narrow body 20 with the narrow body portion 20 ( self-tapping) and can be tightly coupled. That is, the inner wall of the alveolar bone 5 forming the lower hole 7b to which the narrow body portion 20 is paralleled and in which the narrow body portion 20 is tapped and coupled also has a parallel structure. By having a relatively small inner diameter compared to the diameter of the narrow body portion 20, the narrow body portion 20 of the fixture 10 is coupled to the lower hole (7b) of the alveolar bone 5 than the conventional strong fixing force Can be obtained.

On the other hand, the outer surface of the narrow body portion 20, as shown in detail in Figures 1 to 3, a plurality of first cutting edge portion 25 is provided along the circumferential direction. Since the first cutting edge portions 25 are formed at equal intervals, but the tip is sharply formed, when the fixture 10 is rotated and drawn in the inner direction of the drill hole 7 of the alveolar bone 5, the drill hole If there is a portion to be cut in the inner portion of the alveolar bone (5) forming the (7) can be a cutting operation, according to the male thread (40) formed on the outer surface of the alveolar bone (5) and the fixture (10) Self tapping).

In addition to cutting the remaining portion of the alveolar bone 5, the first cutting edge 25 allows the fixture 10 of the present embodiment to be fixed to the alveolar bone 5 with a stronger force. That is, it is possible to improve the fixing force of the fixture 10 to the alveolar bone 5 by preventing the cut portion of the first cutting edge portion 25 from flowing with respect to the alveolar bone 5.

In the present exemplary embodiment, four first cutting edge portions 25 are formed, but the number of first cutting edge portions 25 may be appropriately changed.

As shown in detail in FIG. 3, the second body part 30 extends from an upper end of the narrow body part 20 and is connected to a connecting body part 33 having a diameter of a cross-section gradually increasing upward. It is provided extending from the upper end of the body portion 33, the virtual line 30L connecting the mountains of the male thread 40 formed on the outer surface is substantially parallel to the axis of the drill hole 7 of the alveolar bone 5 And a bevel portion 35 which extends from an upper end of the photo trunk portion 31 and is reduced in diameter upward.

The connecting body portion 33 is a portion connecting the narrow body portion 20 and the light body portion 31 to have a structure that gradually increases in diameter upward. Due to the shape of the connecting body portion 33, that is, the light body portion 31 having a larger diameter than the narrow body portion 20 is drilled by the alveolar bone 5 due to the gentle slanted structure that gradually increases in diameter. It is possible to smoothly enter the hole (7). The connection body 33 is positioned in the connection hole 7c corresponding to each other when the implantation is completed in the drill hole 7 of the alveolar bone 5.

On the other hand, the light body portion 31 is a portion forming the upper end of the fixture 10, and has a relatively large diameter compared to the narrow body portion 20 described above, the fixture 10 for the alveolar bone (5) The bonding force of can be strengthened than before.

Like the narrow body portion 20, the optical body portion 31 has an imaginary line 30L (see FIG. 3) connecting mountains of the male threads 40 formed on the outer surface thereof, and the drill hole 7 of the alveolar bone 5. It is provided substantially parallel to the axis of the. In addition, the diameter of the light body portion 31 has a relatively large value compared to the inner diameter of the upper hole (7a). Accordingly, when the light body portion 31 is coupled to the upper hole 7a of the drill hole 7, the male thread 40 portion is uniform and firm with the inner portion of the alveolar bone 5 forming the upper hole 7a. It can be combined, thereby improving the stability of the implant procedure.

On the other hand, the bevel portion 35 which extends upward from the upper end of the light body portion 31 serves to prevent the alveolar bone 5 from overgrowth and to interfere with the abutment. The bevel part 35 also serves to double the stability of the fixation by preventing the fixture 10 from rising upward when bone fusion is completed.

On the other hand, the outer surface of the second body portion 30, as shown in detail in Figures 1 to 3, the second cutting edge portion 38 substantially similar to the above-described first cutting edge portion 25 is circumferential It is provided along the direction.

This second cutting edge 38 can partially cut the alveolar bone 5 in the drill hole 7 while also improving the fixing force of the fixture 10 against the alveolar bone 5. However, if the aforementioned first cutting edge portion 25 doubles the fixing force in the lower end region of the fixture 10, the second cutting edge portion 38 doubles the fixing force in the central region of the fixture 10. Play a role. That is, the overall fixing force of the fixture 10 to the alveolar bone 5 can be improved by the first cutting edge portion 25 and the second cutting edge portion 38. In the present exemplary embodiment, four second cutting edge portions 38 are formed, but the number of second cutting edge portions 38 may be appropriately changed.

On the other hand, the fixture 10 of the present embodiment having the first body portion 20 and the second body portion 30 is provided integrally as a titanium material, the outer surface of the male thread ( 40 is regularly provided along the circumferential direction. However, in the present embodiment, one threaded thread 40 of one line is formed on the outer surfaces of the first body portion 20 and the second body portion 30, but the first body portion 20 and the second body portion are described above. It is obvious that two or more male threads (not shown) may be formed on the outer surface of the 30.

The structure of the male thread 40 formed on the outer surface of the fixture 10 according to the present embodiment improves the fixing force of the fixture 10 to the alveolar bone 5 when the implantation is completed while the implantation of the fixture 10 is easily performed. It is a structure that can be done.

In more detail, the male screw thread 40 of the present embodiment is a vertical section provided substantially parallel to the axis line 50L (see FIG. 3) of the fixture 10, as shown in detail in FIG. 4. 41, a lower inclined section 42 provided to be inclined downward from the lower end of the vertical section 41, and an upper inclined section 43 provided to be inclined upward from the upper end of the vertical section 41. Here, the inclination θ1 of the upper inclination section 43 has a larger value than the inclination θ2 of the lower inclination section 42.

Since the vertical section 41 is provided with a small width, it is possible to realize the effect of having a substantially sharp shape, and thus to facilitate the placement of the fixture 10.

The lower slope section 42 is a portion for compensating the compressive force in the longitudinal direction of the fixture 10, and the inclination θ1 of the lower slope section 42 may be provided at a value of 5 to 20 degrees. The lower slope section 42 may have an advantage of a square screw due to the smallness of the inclination θ1. That is, since the lower slope section 42 is provided in a shape substantially similar to that of the square screw, a high compressive force can be obtained when the fixture 10 is placed, so that the fixture 10 is inserted into the drill hole 7 of the alveolar bone 5. It can be firmly combined.

On the other hand, the upper inclination section 43 is a portion to facilitate the placement of the fixture 10 to the alveolar bone 5, the inclination (θ2) of the upper inclination section 43 is the lower inclination section 42 It may be provided with an inclination of 30 degrees to 45 degrees, which is a larger value than the inclination θ1 of. The upper inclination section 43 has the advantages of V-screws different from the square screws due to its shape, which allows the fixture 10 to be smoothly placed in the fixture 10 against the alveolar bone 5. Make it happen. In addition, the upper slope section 43 is to ensure a fastening force that the fixture 10 does not fall arbitrarily after the completion of the implantation.

As such, the male thread 40 of the present embodiment has a shape in which the advantages of the square screw and the V-screw can be realized, so that the fixing of the fixture 10 can be easily performed, and also while the mounting is in progress. Fixture 10 is implanted with a high pressing force has the advantage of improving the fixing force of the fixture 10 to the alveolar bone (5).

On the other hand, the fixture 10 of the present embodiment, as schematically shown in Figure 1, is provided with a coupling groove 37 recessed inward from the upper end of the bevel portion 35. The coupling groove 37 is a portion to which the abutment screw for attaching the abutment to the fixture 10 is detachably fastened. The coupling groove 37 has a female screw portion (not shown) corresponding to the male screw portion of the abutment screw, and a rotation blocking groove (not shown) may be provided to prevent the abutment screw from rotating arbitrarily.

Hereinafter, a process of placing the fixture 10 of the dental implant having such a configuration in the alveolar bone 5 will be described.

First, as a preliminary operation of the placement of the fixture 10, the upper hole 7a, the connection hole 7c, and the lower part using a drill (not shown) at the position of the alveolar bone 5 where the fixture 10 is to be placed. The drill hole 7 having the hole 7b is formed. At this time, since the drill used to form the drill hole 7 includes a drill part having a shape corresponding to the shape of the drill hole 7 shown in FIG. 5, the drill hole 7 is easily performed at a time without several operations. Can be formed.

Subsequently, after placing the narrow body portion 20 of the fixture 10 in the drill hole 7 of the alveolar bone 5, the fixture 10 is rotated by using a handpiece (not shown) or the like. 10) allow the drill hole 7 to be drawn inward. At this time, the outer surface of the narrow body portion 20 of the fixture 10 and the inner surface of the upper hole 7a are parallel to each other (parallel) structure while the narrow body portion 20 and the upper hole (7a) Since the diameters of the cross-sections) have substantially the same size, when the fixture 10 is initially placed in the upper hole 7a, the flow of the fixture 10 is prevented so that the drilling direction of the fixture 10 is drilled. It is possible to keep parallel with the axis of the hole (7), thereby preventing the surgical failure that may occur during the procedure of the implant.

In addition, when the narrow body portion 20 enters the connecting hole 7c and the lower hole 7b through the upper hole 7a, the diameter of the connecting hole 7c and the lower hole 7b is narrow. Self-tapping of the fixture 10 to the inner wall portion of the alveolar bone 5 forming the connecting hole 7c and the lower hole 7b is made by having a relatively small size compared to the diameter of Can be. At this time, since the inner wall portion of the alveolar bone 5 forming the narrow body portion 20 and the lower hole 7b has a parallel structure, a uniform but firm coupling can be achieved.

Thereafter, when the narrow body portion 20 is coupled to the lower hole 7b, the connecting body portion 33 and the light body portion 31 are also stepped into the upper hole 7a. At this time, when the optical body portion 31 is coupled to the upper hole 7a, the inner wall portions of the alveolar bones 5 forming the optical body portion 31 and the upper hole 7a have a parallel structure with each other. Since the diameter of the light body portion 31 is slightly larger than that of the hole 7a, the inner wall portion of the alveolar bone 5 forming the upper hole 7a and the male thread 40 of the light body portion 31 are formed. ) Parts can be uniformly and firmly combined.

As described above, the fixture 10 of the present embodiment has a parallel structure of the narrow trunk portion 20 and the light trunk portion 31 so that the fixture 10 is first placed with the alveolar bone 5. It is possible to prevent the flow to the alveolar bone (5) can be coupled to the fixture 10 in the correct coupling direction, and also after the completion of the implantation of the male thread (40) portion of the fixture 10 of the alveolar bone (5) It can be combined with the inner portion uniformly and firmly to further improve the stability of the implant procedure.

In the above-described embodiment, the male thread formed on the outer surface of the fixture is described as having a single thread, but if the production is easy, not only a single thread but a two-thread thread may be provided, and in each region of the fixture. It may also be provided with other threads.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1 is a perspective view of a fixture of a dental implant according to an embodiment of the present invention.

FIG. 2 is a perspective view of FIG. 1 viewed from another direction.

3 is a front view of FIG. 1.

4 is an enlarged view of a portion 'IV' of FIG. 3.

FIG. 5 is a view illustrating a shape in which a fixture of the dental implant illustrated in FIG. 1 is introduced into an initial portion of a drill hole of an alveolar bone.

FIG. 6 is a view illustrating a shape in which a fixture of the dental implant illustrated in FIG. 1 is inserted into a drill hole of an alveolar bone.

* Explanation of symbols for the main parts of the drawings

5: alveolar bone 7: drill hole

10: fixture 20: first body portion (narrow body portion)

25: first cutting edge portion 30: second body portion

31: light body portion 33: connecting body portion

35 bevel portion 38 second cutting edge portion

40: male thread 41: vertical section

42: lower slope section 43: upper slope section

Claims (11)

A first body part implanted in a lower region of the drill hole drilled in the alveolar bone in the oral cavity, and having an imaginary line connecting the mountains of male threads formed on the outer surface thereof to be substantially parallel to the axis of the drill hole; And The male thread having a diameter larger than the cross-sectional diameter of the first body portion and provided by a screw curve substantially the same as the male thread portion of the first body portion is formed on the outer surface, and is provided to extend from an upper end portion of the first body portion. And a second body portion to be implanted into the upper region of the hole. The method of claim 1, The second body portion, A connecting body part provided with a sectional diameter gradually increasing from an upper end of the first body part upward; And Fixture of the dental implant is provided to extend from the upper end of the connecting body portion, the imaginary line connecting the mountains of the male thread formed on the outer surface comprises a light body portion substantially parallel to the axis. The method of claim 2, Fixture of the dental implant further comprises a plurality of first cutting edges which are spaced apart from each other along the circumferential direction of the first body portion is cut by a predetermined depth. The method of claim 2, Fixture of the dental implant further comprises a plurality of second cutting edge portions which are spaced apart from each other along the circumferential direction of the second body portion is cut by a predetermined depth. The method of claim 2, The second body portion, Fixture of the dental implant, characterized in that it further extends from the upper end of the optical body portion, the bevel portion is reduced in diameter upwards. The method of claim 5, The first body portion and the second body portion of the dental implant, characterized in that integrally manufactured using a titanium (Titanium) material. The method of claim 2, The first body portion is a narrow body portion is formed with a smaller cross-sectional diameter than the optical body portion, The narrow body portion is parallelly formed (parallel) over a section from the bottom of the drill hole is implanted in the lower hole formed to a diameter smaller than the cross-sectional diameter of the narrow body portion, The connecting body portion is implanted in the connecting hole gradually increasing in diameter in the direction away from the upper end of the lower hole, The optical body is a fixture of the dental implant, characterized in that it is formed in parallel from the upper end of the connection hole to the opening area of the drill hole, but is implanted in the upper hole formed to a diameter smaller than the cross-sectional diameter of the optical body. The method of claim 1, The male screw thread formed on the outer surface of the first body portion and the second body portion is interconnected, the fixture of the dental implant, characterized in that the thread of a single row or a plurality of rows. The method of claim 8, The male thread acid, A vertical section provided substantially parallel to the axis of the drill hole; A lower slope section provided to be inclined downward from a lower end of the vertical section; And Fixture of the dental implant, characterized in that it is provided to be inclined upward from the upper end of the vertical section, the upper inclined section having an inclination of a relatively large value compared to the inclination of the lower inclined section. 10. The method of claim 9, The lower inclination section is provided to have an inclination of 5 to 20 degrees, the upper inclination section of the dental implant, characterized in that it is provided to have an inclination of 30 to 45 degrees. The method of claim 1, It is formed recessed inward from the upper end of the second body portion, the abutment screw for fixing the abutment coupled to the upper portion of the second body portion further comprises a coupling portion detachably coupled to the dental implant Chew.

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