WO2010090399A2

WO2010090399A2 - Dental implant fixture

Info

Publication number: WO2010090399A2
Application number: PCT/KR2010/000190
Authority: WO
Inventors: 박광범; 류경호; 김용상; 양창희
Original assignee: 주식회사 메가젠임플란트
Priority date: 2009-02-05
Filing date: 2010-01-12
Publication date: 2010-08-12
Also published as: WO2010090399A3; KR101025225B1; KR20100090006A

Abstract

Disclosed is a dental implant fixture. The dental implant fixture of the present invention comprises: a main body which is implanted into a hole drilled in the alveolar bone of an oral cavity, and the outer surface of which has a male thread; and an alveolar bone-contacting inner groove inwardly recessed from the lower end of the main body such that the alveolar bone is introduced into the groove to contact the groove when the main body is implanted into the hole drilled in the alveolar bone. The dental implant fixture of the present invention significantly increases the area contacting the alveolar bone of the patient as compared to conventional dental implant fixtures, and thus greatly increases the coupling force between the fixture and the alveolar bone.

Description

Dental Implant Fixtures

The present invention relates to a fixture of a dental implant, and more particularly, to a fixture of a dental implant that can increase the bonding area with the alveolar bone even more than conventionally.

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 after time, but the implants do not damage the surrounding dental tissues.

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

Such implants generally include fixtures that are placed as artificial roots, abutments that are bonded onto the fixture, abutment screws that secure the abutments to the fixture, and artificials that are coupled to the abutments. Includes teeth. 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. Therefore, the fixture must be firmly placed in the alveolar bone.

Accordingly, the male thread is formed on the outer surface of the fixture so as to be firmly coupled to the inner wall portion of the alveolar bone forming the drill hole. These male threads form female threads in the alveolar bone and are inserted to allow the fixture and the alveolar bone to be firmly coupled, as well as to increase the fixation force of the fixture to the alveolar bone by increasing the contact area between the fixture and the alveolar bone.

By the way, in the conventional dental implant fixture, the male thread formed on the outer surface of the fixture is self-tapping and coupled to the alveolar bone portion that forms the inner wall of the drill hole, so that the fixture is somewhat fixed to the alveolar bone. Although it can be firmly coupled, the situation is still in need of improvement in terms of increasing the bonding strength with the alveolar bone.

In more detail, the shape of the maxillary molar is increased by 3 roots and the surface area of the maxillary molars does not easily fall out due to the strong bonding force with the alveolar bone, but compared with the maxillary molar, the fixture shape of the conventional dental implant Is still lacking in cohesion. This fact can be confirmed that the coupling force between the fixture and the alveolar bone is lower than the mandible in the case of the maxilla during the implant procedure.

Therefore, it is necessary to increase the surface area of the fixture in order to improve the coupling force between the alveolar bone and the fixture, but the conventional fixture shape has a limitation in increasing the surface area, and the coupling force between the alveolar bone and the fixture can be significantly improved compared to the conventional one. There is a need for the development of a fixture of a new dental implant.

It is an object of the present invention to provide a fixture of a dental implant which can significantly increase the contact area with the alveolar bone than ever before, thereby further increasing the bonding force with the alveolar bone.

According to the present invention, the contact area with the alveolar bone can be significantly increased than before, so that the bonding force with the alveolar bone can be further increased.

1 is a view schematically illustrating a shape in which a fixture of a dental implant according to an embodiment of the present invention is placed in an alveolar bone.

FIG. 2 is a perspective view of the fixture of the dental implant shown in FIG. 1. FIG.

FIG. 3 is a perspective view of the dental implant shown in FIG. 2 viewed from another direction. FIG.

4 is a cross-sectional view schematically illustrating a shape in which a fixture of the dental implant illustrated in FIG. 2 is placed in a drill hole of an alveolar bone.

FIG. 5 is an enlarged view of a portion 'V' shown in FIG. 4.

6 is a view showing the main part of the dental implant fixture according to another embodiment of the present invention.

7 is a view showing the main part of the dental implant fixture according to another embodiment of the present invention.

8 is a perspective view of a fixture of a dental implant according to another embodiment of the present invention.

9 is a view illustrating a shape in which a fixture of a dental implant is inserted into an alveolar bone according to another embodiment of the present invention.

According to the present invention, the body portion is placed in the drill hole drilled in the alveolar bone in the oral cavity, the male thread formed on the outer surface; And an alveolar bone contact inner groove which is formed recessed inwardly from the bottom surface of the torso to allow the alveolar bone to be inserted and contacted when the torso is placed in the drill hole of the alveolar bone. Is achieved by

The alveolar bone contact inner groove may be recessed to have a circular cross section at the central portion of the bottom surface of the trunk portion.

The alveolar bone contact inner groove may have a tapered shape whose diameter gradually decreases toward the inner portion of the trunk portion.

Projections protruding from the surface may be provided on the inner surface of the body portion forming the alveolar bone contact inner groove.

A female thread may be formed on an inner surface of the trunk portion forming the alveolar bone contact inner groove.

The body portion, the male body is formed on the outer surface, the central body portion that is provided with a virtual line connecting the mountains of the male thread substantially parallel to the axis of the body portion; A tapered body portion extending from a lower end of the central body portion and provided integrally, and having a diameter of the cross-section gradually decreasing downward; And it is provided extending from the upper end of the central body portion is provided integrally, it may include a bevel portion gradually decreasing the diameter of the cross-section toward the top.

The male screw thread formed on the outer surface of the body portion may include a vertical section provided substantially parallel to the central axis of the body portion; 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.

The lower end of the body portion may be provided with a plurality of cutting edges cut along the circumferential direction.

The body portion is implanted in the lower region of the drill hole, the narrow body portion is provided with a virtual line forming an outer surface substantially parallel to the axis of the drill hole; A connecting body portion provided to extend from an upper end portion of the narrow body portion and gradually increasing in cross-sectional diameter toward an upper portion thereof; An optical body portion extending from an upper end portion of the connecting body portion and having an imaginary line forming an outer surface substantially parallel to an axis of the drill hole; And it is provided extending from the upper end of the light body portion, and may include a bevel portion that gradually decreases the diameter of the cross-section toward the top.

It may further include a plurality of first cutting edges which are spaced apart from each other along the circumferential direction of the narrow body portion is cut to a predetermined depth.

The optical body may further include a plurality of second cutting edges which are spaced apart from each other in a circumferential direction of at least one of the body portion and the connection body portion, and are cut off by a predetermined depth.

The body portion may be integrally manufactured using a titanium material.

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 view schematically showing a shape of a dental implant implanted in the alveolar bone according to an embodiment of the present invention, Figure 2 is a perspective view of the fixture of the dental implant shown in Figure 1, 3 is a perspective view of the dental implant shown in FIG. 2 viewed from another direction, and FIG. 4 is a cross-sectional view schematically illustrating a shape in which the dental implant shown in FIG. 2 is placed in the drill hole of the alveolar bone. 5 is an enlarged view of a portion 'V' shown in FIG. 4, FIG. 6 is a view showing a main part of a dental implant fixture according to another embodiment of the present invention, and FIG. 7 is a view of the present invention. 4 is a view illustrating a main part of a dental implant fixture according to another embodiment.

Dental implant according to an embodiment of the present invention, as shown schematically in Figure 1, a fixture (10, Fixture) is placed as an artificial root, abutment (not shown) coupled to the fixture (10) Abutment), 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 the fixture 10 is placed in the drill hole 7 (see FIG. 4) formed in the alveolar bone 5, the abutment is coupled to the fixture 10 by using abutment screw, and prepared in advance on the outer surface of the abutment. By combining the artificial dental implants can proceed with the dental implant procedure. 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 to serve as a root, as shown in detail in Figures 2 and 3, perforating the alveolar bone 5 The body portion 20 is placed in the drill hole 7 and the male thread 30 is formed on the outer side surface, and is formed recessed inward from the lower surface of the body portion 20 to the alveolar bone ( 5) includes the alveolar bone contact inner groove 50 to significantly increase the contact area of the prior art.

In the trunk portion 20 of the present embodiment, as shown in detail in FIG. 3, the male thread mountain 30 is formed on the outer surface, but a virtual line having the mountains of the male thread mountain 30 is the axis of the trunk portion 20. The central body portion 21 is provided to be substantially parallel to the tapered body portion 23 is provided extending from the lower end of the central body portion 21, the diameter of the cross-section is reduced toward the downward direction and has a tapered shape (taper) And a bevel portion 25 which extends from an upper end of the central trunk portion 21 and whose cross section gradually decreases in diameter as it goes upward.

The central body portion 21 is provided in a parallel structure as a portion substantially occupying the widest section of the body portion 20. Accordingly, when the fixture 10 is inserted into and coupled to the drill hole 7 of the alveolar bone 5, the alveolar bone part forming the inner wall of the drill hole 7 due to the parallel structure of the central trunk portion 21 ( 5a, see FIG. 4, and the fixture 10 may be combined uniformly and firmly. That is, the alveolar bone portions 5a forming the inner wall of the central trunk portion 21 and the drill hole 7 are densely coupled without being spaced apart from each other.

The tapered body part 23 is formed to extend from the lower end of the central body part 21 and is integrally formed with the central body part 21, and has a shape in which the diameter gradually decreases toward the lower side, Accordingly, a plurality of cutting edges 27 are provided.

The tapered body portion 23 has a width slightly smaller than that of the opening of the drill hole 7 formed in the alveolar bone 5 so that the fixture 10 is first inserted into the drill hole 7 of the alveolar bone 5. Make it easy to process when placed. However, since the tapered body portion 23 of the present embodiment is formed over a relatively small section compared to the central body portion 21, the tapered body portion 23 is inserted into the drill hole 7 of the alveolar bone 5. Immediately after, the central body portion 21 of the long section can be inserted into the drill hole 7 of the alveolar bone 5, so that the orientation of the fixture 10 relative to the alveolar bone 5 can be accurately positioned during initial placement. do.

The cutting edge portion 27 is formed at equal intervals along the circumferential direction of the tapered body portion 23, but the tip is sharply formed. Therefore, when the fixture 10 rotates and is drawn into the drill hole 7 of the alveolar bone 5, the part to be cut remains in the inner part of the alveolar bone 5 forming the drill hole 7. Cutting can be performed for this, thereby allowing the self-tapping of the male thread 30 formed on the outer surface of the alveolar bone 5 and the fixture 10 to be smoothly performed. In the present embodiment, four cutting edge portions 27 are formed, but the number of cutting edge portions may be appropriately changed.

Bevel portion 25, as shown in detail in Figure 3, is provided extending from the upper end of the central body portion 21, the linear portion of which is gradually reduced in diameter, such bevel portion 25 Due to the structural shape, it is possible to prevent the alveolar bone 5 from over-growing and preventing the abutment and fastening. The bevel portion 25 serves to double the stability of the fixation by preventing the fixture 10 from rising upward when the bone fusion of the alveolar bone 5 to the fixture 10 is completed.

Body portion 20 having such a configuration is provided integrally as a titanium (titanium) material, the outer surface of the male thread 30 is provided regularly in the circumferential direction. However, the scope of the present invention is not limited thereto, and a plurality of male threads (not shown) may be regularly provided along the circumferential direction.

Due to the male thread 30 formed on the outer surface of the fixture 10 of the present embodiment, the implantation of the fixture 10 with respect to the alveolar bone 5 may be easily performed, and the fixation with respect to the alveolar bone 5 when the implantation is completed. The fixing force of the chur 10 can be improved.

Male thread 30 of the present embodiment, as shown in detail in Figures 4 and 5, the vertical section 31 is provided in parallel with the axis of the body portion 20, and the lower end of the vertical section 31 Lower slope section 33 is provided to be inclined downward from the upper slope section 35 is provided to be inclined upward from the upper end of the vertical section (31). Here, the inclination θ2 of the upper slope section 35 has a larger value than the inclination θ1 of the lower slope section 33.

First, since the vertical section 31 is provided with a small width, it is possible to implement the effect of having a substantially pointed shape, thereby allowing easy placement of the fixture 10.

The lower slope section 33 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 33 may be provided at a value of 5 to 20 degrees. The lower slope section 33 may realize an effect substantially similar to that of the square screw due to the smallness of the inclination θ1. That is, since the lower slope section 33 is provided in a shape similar to the square screw, a high compressive force can be obtained when the fixture 10 is placed, and thus the fixture 10 is inserted into the drill hole 7 of the alveolar bone 5. Can be firmly combined.

On the other hand, the upper inclination section 35 is a portion to facilitate the placement of the fixture 10 to the alveolar bone 5, the inclination (θ2) of the upper inclination section 35 is the lower inclination section 33 It may be provided with a value of 30 degrees to 45 degrees, which is a larger value than the inclination θ1 of. The upper inclination section 35 has an advantage of V-screws different from the square screws due to the structural shape, thereby allowing the attachment of the fixture 10 to the alveolar bone 5 smoothly. In addition, the upper slope section 35 to secure the fastening force that the fixture 10 does not fall arbitrarily after the completion of the implantation.

As such, the male thread 30 of the present embodiment has a structural shape in which the advantages of the square screw and the V-thread can be realized, so that the fixture 10 is easily placed in the drill hole 7 of the alveolar bone 5. In addition, the fixture 10 can be implanted with a high compression force while the implantation is in progress, there is an advantage that can improve the fixing force of the fixture 10 to the alveolar bone (5) than conventional.

On the other hand, the alveolar bone contact inner groove 50 is a portion formed recessed inward from the bottom surface of the body portion 20, due to the alveolar bone contact inner groove 50 between the alveolar bone 5 and the fixture 10 The bonding force can be significantly improved than before.

That is, the conventional fixture has a certain limit in increasing the contact area because the contact area with the alveolar bone is made only on the outer surface. For example, when the male thread is densely formed in order to increase the contact area with the alveolar bone, it may be difficult to apply because the area of contact with the alveolar bone may be increased, but it may be sacrificed to some extent in areas such as ease of implantation. many.

However, the fixture 10 of the present embodiment has an alveolar bone contact inner groove 50 which is not present in the conventional fixture, thereby remarkably increasing the contact area with the alveolar bone 5, thereby providing a coupling force between the alveolar bone 5 and the fixture 10. It can be improved even more than before.

The alveolar bone contact inner groove 50, as shown in detail in Figures 2 and 4, is formed in the inner direction so that the cross section is circular in the central portion of the lower surface of the body portion 20. Therefore, when the fixture 10 is placed in the drill hole 7 of the alveolar bone 5, the alveolar bone portion 5b forming the bottom of the drill hole 7 is introduced into the alveolar bone contact inner groove 50 and drawn in. The inner surface of the alveolar bone portion 5b and the alveolar bone contact inner groove 50 may be in contact with each other, thereby also between the alveolar bone portion 5b and the lower portion of the trunk portion 20 forming the bottom of the drill hole 7. In contact with each other, a firm coupling force can be generated.

The alveolar bone contact inner groove 50 is provided in a tapered shape whose cross section gradually decreases from the bottom surface of the trunk portion 20 toward the inner side. Accordingly, the alveolar bone portion 5b forming the bottom of the drill hole 7 can be easily introduced into the alveolar bone contact inner groove 50 inwards, and for example, the fixture 10 may be inserted into the alveolar bone for re- implantation. When it is necessary to separate from the drill hole 7 of 5) the alveolar bone 5 may not be caught by the alveolar bone contact inner groove 50 so that the detachment of the fixture 10 for re-treatment may also be performed smoothly.

On the other hand, the inner surface of the trunk portion 20 forming the alveolar bone contact inner groove 50, as shown in Figure 6, may be provided with a plurality of protrusions 50a protruding from the surface.

Accordingly, the inner surface of the trunk portion 20 forming the alveolar bone 5 and the alveolar bone contact inner groove 50 can be introduced into the alveolar bone 5 forming the bottom of the drill hole 7 between the plurality of protrusions 50a. The contact area of the liver can be significantly increased than in the prior art, and accordingly, the coupling force of the fixture 10 to the alveolar bone 5 can be further improved. That is, not only the alveolar bone 5 is introduced between the protrusions 50a but also the contact area can be increased by the curved surface of the protrusion 50a, thereby improving the coupling force of the fixture 10 to the alveolar bone 5 than before. It can be.

On the other hand, although not shown, a plurality of recessed grooves (not shown) formed in the inner surface of the trunk portion 20 forming the alveolar bone contact inner groove 50 is not compared to the surface of the projection 50a protruding from the surface It may be arranged. When the recessed groove is formed on the inner surface of the trunk portion 20 forming the alveolar bone contact inner groove 50, the alveolar bone 5 introduced into the alveolar bone contact inner groove 50 is inserted once more into the recessed groove. It is possible to further increase the contact area between the 5) and the fixture (10), and thus to significantly increase the coupling force of the fixture (10) to the alveolar bone (5).

On the other hand, in order to further increase the contact area with the alveolar bone 5 on the inner surface of the trunk portion 20 forming the alveolar bone contact inner groove 50, a plurality of protrusions (50a) A female thread 50b having a predetermined screw curve may be formed instead of the above.

Thus, the alveolar bone 5 forming the bottom of the drill hole 7 can be inserted between the peak and the valley of the female thread 50b, so that the trunk forming the alveolar bone 5 and the alveolar bone contact inner groove 50 is formed. It is possible to increase the contact area with the inner surface of the portion 20 than in the prior art, thus improving the coupling force of the fixture 10 to the alveolar bone 5 more.

On the other hand, the upper portion of the trunk portion 20, as shown in detail in Figures 3 and 4, the abutment coupling portion 60 to which the abutment is coupled is provided. The abutment coupling part 60 includes a screw groove part 61 to which abutment screw for coupling the abutment to the fixture 10 and a hexagonal hexagonal inlet portion 63 having a hexagonal column shape to be partially inserted into the lower end of the abutment. do. Due to the configuration of the abutment coupling part 60, the abutment can be easily coupled to the fixture 10, and by introducing the lower end of the abutment into the hexagonal inlet portion 63 of the abutment coupling part 60 The stock can be prevented from rotating arbitrarily with respect to the fixture 10. That is, the fixture 10 and the abutment can be firmly combined.

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, a drill hole 7 is formed using a drill (not shown) at a position of the alveolar bone 5 in which the fixture 10 is to be placed as a preliminary work of the fitting operation of the fixture 10. Thereafter, the fixture 10 is positioned in the drill hole 7 of the alveolar bone 5, and then the fixture 10 is drilled by rotating the fixture 10 using a handpiece (not shown). ) To be pulled inward.

When the fixture 10 is placed in the drill hole 7, the tapered body portion 23 formed at the lower end of the body portion 20 can be easily inserted into the opening of the drill hole 7, and then the body portion The male thread 30 formed on the outer surface of 20 is self-tapping and introduced into the alveolar bone portion 5a forming the inner wall of the drill hole 7 to complete the placement of the fixture 10 on the alveolar bone 5. Can be.

However, the alveolar bone portion 5b is the trunk portion 20 when the lower end portion of the trunk portion 20 contacts the alveolar bone portion 5b forming the bottom of the drill hole 7 during the placement of the fixture 10. The alveolar bone contact inner groove 50 is partially recessed formed in the lower end of the alveolar bone 5 is in contact with the inner surface of the alveolar bone contact inner groove 50.

Thereafter, the fixture 10 is subjected to a predetermined period so that the fixture 10 is fused to the alveolar bone 5, wherein the alveolar bone 5 is not only between the male threads 30 formed on the outer surface of the trunk 20, but also inside the alveolar bone contact. The fusion between the alveolar bone 5 and the fixture 10 may be smoothly drawn between the inner surfaces of the grooves 50.

As such, according to the present embodiment, the alveolar bone portion 5a forming the inner wall of the drill hole 7 of the alveolar bone 5 and the outer surface of the trunk portion 20 can be firmly contacted with each other. The alveolar bone portion 5b forming the bottom of the drill hole 7 is introduced into the alveolar bone contact inner groove 50 of the trunk portion 20, thereby significantly increasing the contact area with the alveolar bone 5 than before. And the coupling force between the fixture 10 has an effect that can be significantly increased than before.

On the other hand, hereinafter, with reference to the accompanying drawings will be described a fixture of a dental implant according to another embodiment of the present invention. However, the same description as in the fixture of the dental implant according to an embodiment of the present invention will be omitted.

8 is a perspective view of a fixture of a dental implant according to another embodiment of the present invention, Figure 9 is a view illustrating a shape in which the fixture of the dental implant according to another embodiment of the present invention is inserted into the alveolar bone. Drawing.

As shown in these figures, the fixture 110 of the dental implant according to another embodiment of the present invention, in order to increase the coupling force between the outer surface of the body portion 120 and the alveolar bone 5 than in the conventional The body portion 120 having a structure different in diameter from the upper end portion and the lower end portion, and the alveolar bone contact inner portion formed to be recessed inward from the lower end surface of the trunk portion 120 to increase the contact area with the alveolar bone 5. The groove part 150 is provided. However, hereinafter, since the substantial structure of the alveolar bone contact inner groove 150 of the present embodiment is substantially the same as the structure of the alveolar bone contact inner groove 50 (see FIG. 4) of the above-described embodiment, a description thereof will be omitted.

As shown in detail in FIGS. 8 and 9, the trunk portion 120 of the present embodiment is implanted in the lower region of the drill hole 7, and an imaginary line forming an outer surface of the trunk portion 120 is formed in the axis of the drill hole 7. Substantially parallel (parallel) is provided with a narrow body portion 121, the connecting body portion 122 is provided to extend from the upper end of the narrow body portion 121, the diameter of the cross-section gradually increases toward the upper side, the connecting body An optical body portion 123 and an optical body portion 123, wherein an imaginary line extending from an upper end of the portion 122 and forming an outer surface is substantially parallel to an axis of the drill hole 7. It is provided extending from the top of the bevel portion includes a bevel portion 125 is gradually reduced in diameter in the cross section.

Narrow body portion 121 of the present embodiment, unlike the tapered lower end of the body portion 20 (see Fig. 4) of the above-described embodiment has a parallel structure. Further, the diameter of the cross section of the narrow barrel portion 121 is substantially the same as the inner diameter of the opening area of the drill hole 7. Therefore, when the narrow body portion 121 having the parallel structure is first introduced into the drill hole 7, the narrow body portion 121 may be prevented from flowing with respect to the drill hole 7 due to the same diameter. Therefore, when the fixture 110 is first introduced into the drill hole 7 of the alveolar bone 5, it may be introduced in the correct direction.

The connecting body portion 122 is a portion connecting the narrow body portion 121 and the light body portion 123 and has a structure that gradually increases in diameter upward. Due to the shape of the connecting body portion 122, that is, the light body portion 123 having a larger diameter than the narrow body portion 121 is drilled by the alveolar bone 5 due to the gentle inclined structure that gradually increases in diameter upward. It is possible to smoothly enter the hole (7).

The optical trunk | drum 123 is provided with the virtual line which forms an outer surface similarly to the narrow trunk | drum 121, substantially parallel with the axis line of the drill hole 7 of the alveolar bone 5. In addition, the diameter of the light barrel portion 123 has a relatively large value compared to the inner diameter of the opening area of the drill hole (7). Accordingly, when the photo trunk 123 is coupled to the drill hole 7, the male thread 140 may be uniformly and firmly coupled to the inner portion of the alveolar bone 5, thereby increasing the stability of the implant procedure. Can be improved.

On the other hand, the outer surface of the body portion 120 can be partially cut the alveolar bone 5 in the drill hole (7) while also cutting a plurality of cutting to improve the fixing force of the fixture 110 to the alveolar bone (5)

Edge portions

127 and 128 are provided. In more detail, the outer surface of the narrow body portion 121 is formed by cutting a plurality of first cutting edge portions 127 along the circumferential direction, and the outer surface of the light body portion 123 and the connecting body portion 122. The plurality of second cutting edge portions 128 are formed by cutting along the circumferential direction.

Here, the first cutting edge portion 127 serves to double the fixing force in the lower end region of the fixture 110, that is, the narrow body portion 121, the second cutting edge portion 128 is the fixture 110 ) In the central region, that is, the optical body 123 and the connecting body portion 122 serves to double the fixing force. By such a configuration, the overall coupling force of the fixture 110 to the alveolar bone 5 can be further improved.

As such, according to another embodiment of the present invention, as the trunk portion 120 has a parallel structure, the placement of the fixture 110 on the alveolar bone 5 can be made precisely and easily as well as the alveolar bone ( 5) and the fixture 110 may be coupled with a strong coupling force, and also the alveolar bone 5 by significantly increasing the contact area between the alveolar bone 5 and the fixture 110 due to the alveolar bone contact inner groove 150. The coupling force of the fixture 110 can be significantly increased than in the prior art.

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

In addition, in the above-described embodiments, the alveolar bone contact inner groove which is recessed inward from the center portion of the lower surface of the fixture is described in detail above, but if it is possible to manufacture a plurality of grooves regularly recessed on the lower surface of the fixture It may be formed to increase the contact area between the fixture and the alveolar bone.

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. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

The present invention can be used in dental implant procedures.

Claims

A body part which is placed in a drill hole drilled in the alveolar bone in the oral cavity, and which has a male thread formed on an outer surface thereof; And

The recess of the dental implant, characterized in that the recess is formed in the inner direction from the bottom surface, the alveolar bone is inserted into contact with the alveolar bone contact when the torso is placed in the drill hole of the alveolar bone.
The method of claim 1,

The alveolar bone contact inner groove is a fixture of a dental implant, characterized in that formed in the center portion of the lower end of the body so that the cross section has a circular shape.
The method of claim 1,

The alveolar bone contact inner groove is a fixture of a dental implant, characterized in that it has a tapered shape that gradually decreases in diameter toward the inner portion of the body portion.
The method of claim 3,

Fixation of the dental implant, characterized in that the projections protruding from the surface is provided on the inner surface of the body portion forming the alveolar bone contact inner groove.
The method of claim 3,

Fixing dental implant, characterized in that the female thread is formed on the inner surface of the body portion forming the alveolar bone contact inner groove.
The method of claim 1,

The body portion,

A central body portion having an external male thread formed on an outer surface thereof and having a virtual line connecting the mountains of the male thread substantially parallel to an axis of the trunk portion;

A tapered body portion extending from a lower end of the central body portion and provided integrally, and having a diameter of the cross-section gradually decreasing downward; And

The implant of the dental fixture characterized in that it is provided extending from the upper end of the central body portion is provided integrally, the bevel portion is gradually reduced in diameter in the cross section toward the top.
The method of claim 1,

The male thread mountain formed on the outer surface of the body portion,

A vertical section provided substantially parallel to the central axis of the body portion;

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 larger value than the inclination of the lower inclined section.
The method of claim 7, wherein

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,

Fixture of the dental implant, characterized in that the lower edge portion of the body portion is provided with a plurality of cutting edges are cut along the circumferential direction.
The method of claim 1,

The body portion,

A narrow body part implanted in a lower region of the drill hole and having an imaginary line forming an outer surface thereof substantially parallel with an axis of the drill hole;

A connecting body portion provided to extend from an upper end portion of the narrow body portion and gradually increasing in cross-sectional diameter toward an upper portion thereof;

An optical body portion extending from an upper end portion of the connecting body portion and having an imaginary line forming an outer surface substantially parallel to an axis of the drill hole; And

The dental implant of the dental implant, characterized in that it extends from the upper end of the optical body portion, and includes a bevel portion that gradually decreases the diameter of the cross-section toward the top.
The method of claim 10,

Fixture of the dental implant, characterized in that it further comprises a plurality of first cutting edges which are spaced apart from each other along the circumferential direction of the narrow body portion is cut by a predetermined depth.
The method of claim 10,

Fixture of the dental implant further comprises a plurality of second cutting edges which are spaced apart from each other along the circumferential direction of at least one of the light body portion and the connecting body portion is cut by a predetermined depth.
The method of claim 1,

The body portion of the dental implant, characterized in that the body is made integrally using a titanium (titanium) material.