WO2010131879A2

WO2010131879A2 - Fixture for a dental implant

Info

Publication number: WO2010131879A2
Application number: PCT/KR2010/002961
Authority: WO
Inventors: 박광범; 류경호; 박철준; 양동준; 양창희
Original assignee: 주식회사 메가젠임플란트
Priority date: 2009-05-13
Filing date: 2010-05-10
Publication date: 2010-11-18
Also published as: KR101092311B1; KR20100122691A; WO2010131879A3

Abstract

Disclosed is a fixture for a dental implant. The fixture for a dental implant according to the present invention comprises: a fixture body which is implanted into a drill hole formed through alveolar bone in the mouth, and which has an outer surface with a male thread formed on at least a portion thereof; and a filler space unit which penetrates through the center axis of the fixture body, and which has a first filler space to be filled with a bone morphogenetic material for promoting the osteogenesis of alveolar bone. The present invention enables a bone morphogenetic material for accelerating osteogenesis, for example bone morphogenetic protein (BMP), to be continuously filled in the filler space formed in the fixture body during a dental procedure or even after the completion of the dental procedure if needed, thereby promoting the osteogenesis of alveolar bone around the fixture body during an osseointegration period. This leads to improved bone density, and thus increases the tightening force of the fixture to alveolar bone as compared to conventional fixtures.

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 capable of filling a bone forming material, such as BMP (Bone Morphogenetic Protein). .

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 artificial joints that are joined to the abutments. Include an crown (Artificial Crown). However, the fixture and the abutment may be provided integrally, in which case the abutment screw may be omitted.

On the other hand, when the fixture and the abutment are joined by abutment screw, a healing abutment or cover screw is applied before the abutment is bonded to the fixture, i.e., until the fixture is fused to the alveolar bone. It can also be coupled to a fixture to remain engaged.

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 a female thread in the alveolar bone to allow the fixture and the alveolar bone to be firmly coupled to the alveolar bone as well as to increase the contact area between the fixture and the alveolar bone, thereby enhancing the fixation force of the fixture to the alveolar bone.

By the way, in the conventional dental implant fixture, the bone fusion of the fixture to the alveolar bone is secured when it is placed in the alveolar bone with high bone density, thereby securing the fixation force of the fixture to the alveolar bone, for example, the bone density is relatively If a dental implant fixture is placed in a small alveolar bone, the fixation force of the fixture to the alveolar bone cannot be secured because the bone fusion of the fixture to the alveolar bone does not proceed densely even after several months of bone fusion for healing. This may cause problems such as the need for re- implantation.

Therefore, the development of a fixture of a dental implant of a new structure that can improve the fixing force of the fixture to the alveolar bone by promoting bone fusion with the alveolar bone is required.

An object of the present invention is to continuously fill the filling space formed in the fixture body with a bone forming material that promotes bone formation, for example, bone morphogenetic protein (BMP), if necessary during or after the procedure. It can promote bone formation of the alveolar bone around the fixture body during the bone fusion period, thereby improving the bone density of the alveolar bone, thereby providing a dental implant fixture that can strengthen the fixation force of the fixture to the alveolar bone. .

According to the present invention, the filling space formed in the fixture body can be continuously filled with bone-forming material, such as bone morphogenetic protein (BMP, BMP, BMP), which promotes bone formation, if necessary during or after the procedure. During bone fusion, it is possible to promote bone formation of the alveolar bone around the fixture body, thereby improving the bone density of the alveolar bone, thereby strengthening the fixation force of the fixture to the alveolar bone.

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

2 is a perspective view of a fixture of a dental implant according to the first embodiment of the present invention shown in FIG.

3 is a perspective view of FIG. 2 viewed from another angle.

4 is a vertical cross-sectional view of FIG. 2.

5 is a cross-sectional view taken along the line 'V-V' of FIG. 4.

6 is a view showing a state in which the fixture of the dental implant shown in FIG. 2 is placed in the alveolar bone.

7 is a perspective view of a fixture of a dental implant according to a second embodiment of the present invention.

8 is a view showing a state in which the fixture of the dental implant shown in FIG. 7 is placed in the alveolar bone.

9 is a perspective view of a fixture of a dental implant according to a third embodiment of the present invention.

10 is a view showing a state in which the fixture of the dental implant shown in FIG. 9 is placed in the alveolar bone.

The object is, according to the present invention, is implanted in a drill hole drilled in the alveolar bone in the oral cavity, fixture body formed with a male thread in at least one section of the outer surface; And a filling space portion formed through the central axis of the fixture body and having a first filling space filled with a bone forming material for promoting bone formation of the alveolar bone. Is achieved by

Here, an enlarged diameter space may be provided at the lower end of the first filling space to increase the diameter of the cross section toward the lower portion.

The filling space portion may be further provided with a second filling space which is formed in the radial direction of the fixture body from the outer surface of the fixture body, the bone filling material is filled to promote bone formation of the alveolar bone. have.

The second filling space may be formed to penetrate in the radial direction of the fixture body so as to communicate with the first filling tube, and may be formed to penetrate in a direction inclined with respect to the penetrating direction of the first filling space.

The second filling spaces may be spaced apart from each other along the circumferential direction of the fixture body at equal intervals.

The first filling space and the second filling space may be formed through the fixture body to be substantially the same as the chemical bonding structure of the carbon atoms.

The bone forming material filled in the filling space may be BMP (Bone Morphogenetic Protein).

Any one of a female thread and a groove may be formed on an inner surface of the fixture body forming the first filling space.

It may further include an internal (Internal) coupling groove that is formed in the recess in the inner direction from the top surface of the fixture body detachably coupled to the abutment screw for detachably coupling the abutment to the upper portion of the fixture body.

The internal coupling groove portion is formed in a recess in the inner direction from the upper end of the fixture body, the diameter of the cross-section is reduced toward the inner direction, the abutment coupling groove is partially introduced by the abutment; And it is formed recessed in the inward direction from the bottom of the abutment coupling groove, it may include a screw coupling groove is formed with a female thread for coupling the male thread formed on the outer surface of the abutment screw.

The fixture body may include: a body part having a male screw thread formed in at least one section of an outer surface thereof; And an abutment portion extending upwardly from an upper end of the main body portion and integrally formed with the main body portion, to which an artificial crown is coupled, wherein the first filling space of the filling space portion is a central axis of the main portion and the abutment portion. It may be formed through the direction.

The first charging space, the main body filling space is formed along the central axis of the body portion; And an abutment filling space formed along a central axis of the abutment, and an internal thread may be formed on an inner surface of the body portion forming the main portion filling space.

In the filling space portion, a second filling space is formed recessed in the radial direction from the outer surface of the main body portion to communicate with the first filling space, the second filling space is filled with a bone forming material for promoting bone formation of the alveolar bone It can be arranged further.

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 showing a shape in which the fixture of the dental implant according to the first embodiment of the present invention is placed in the alveolar bone, as shown schematically, the dental implant (1, Dental Implant) is artificial Fixture 10 according to the first embodiment of the present invention to be placed as a root, abutment (2, Abutment) and the abutment (2) coupled to the fixture 10 to the fixture (10) Abutment screw (3, Abutment Screw) for fixing, and artificial crown (not shown, coupled to the abutment (2)).

According to this configuration, after implanting the fixture 10 according to the first embodiment of the present invention in the drill hole 7 (see FIG. 6) formed in the alveolar bone 5 (see FIG. 6), the abutment screw 3 is mounted. By using the abutment (2) to the fixture 10 by using, and by combining the artificial crown prepared in advance to the outer surface of the abutment (2) can be performed the procedure of the dental implant (1). However, the configuration of the dental implant (1) according to the present embodiment, it is obvious that the configuration of the dental implant (1) can be changed in various ways depending on the procedure.

FIG. 2 is a perspective view of a fixture of a dental implant according to the first embodiment of the present invention shown in FIG. 1, FIG. 3 is a perspective view of FIG. 2 viewed from another angle, and FIG. 4 is a vertical sectional view of FIG. 2. FIG. 5 is a cross-sectional view taken along the line 'V-V' of FIG. 4, and FIG. 6 is a view showing a state in which the fixture of the dental implant shown in FIG. 2 is placed in the alveolar bone.

As shown in these figures, the fixture 10 of the dental implant according to the first embodiment of the present invention is placed in the drill hole 7 of the alveolar bone 5 (see FIG. 6) to serve as an artificial root. As a part to be fixed, the fixture body 20 is placed in the drill hole 7 drilled in the alveolar bone 5 and the male thread 30 is formed on the outer surface thereof, and from the upper end surface of the fixture body 20 to the inside direction. An internal coupling groove 40 to which the abutment screw 3 for recessing and joining the abutment column 2 (see FIG. 1) to the upper portion of the fixture 10 and the direction of the center axis of the fixture body 20 and Bone-forming material 60, ie, bone forming proteins 60, BMP, of the present embodiment, which are formed in the axial and oblique directions to promote bone formation of the alveolar bone 5 around the fixture body 20 during bone fusion. Bone Morphogenetic Protein) is filled with a charging space (50).

Fixture body 20 of the present embodiment, as shown in detail in Figures 2 to 4, occupies the largest section of the fixture body 20 is a regular male thread 30 is formed on the outer surface The main body portion 21 and the tapered body portion 23 of the tapered shape that is provided extending from the lower end of the main body portion 21, the diameter of the cross section is reduced toward the lower side, and the main body portion 21 It is provided extending from the top of the bevel portion 25 includes a bevel portion 25 is gradually simplified in diameter toward the top. In addition, a plurality of cutting edges 24 are provided at the lower end portion of the main body portion 21 and the tapered body portion 23 along the circumferential direction.

The main trunk portion 21 is a portion in which the largest portion of the inner wall of the alveolar bone 5 forming the drill hole 7 is substantially in contact with each other, and the male thread 30 is formed over a section except for the upper end region. It is formed regularly. The main body portion 21 is provided in a substantially parallel (parallel) structure can be coupled to the inner wall of the alveolar bone 5 forming the drill hole 7 with a uniform pressure.

The tapered body portion 23 extends from the lower end of the main body portion 21 and is integrally formed with the main body portion 21, and has a tapered shape in which the diameter gradually decreases downward.

The tapered body 23 has a relatively small width compared to the opening of the drill hole 7, so that the process when the fixture 10 is initially placed in the drill hole 7 of the alveolar bone 5 is easy. To make it happen. However, since the tapered body portion 23 of the present embodiment is formed over a relatively short section than the main body portion 21, the tapered body portion 23 is inserted into the drill hole 7 of the alveolar bone 5 Immediately after, the main body portion 21 of a relatively 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 is correctly positioned at the time of initial placement. Can be caught.

The cutting edge portion 24 is formed at equal intervals along the circumferential direction of the lower end portions of the tapered body portion 23 and the main body portion 21, 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 addition, such a cutting edge 27 is a fixture for the alveolar bone 5 by preventing the fixture 10 from rotating relative to the alveolar bone 5 after the fixture 10 has been placed in the alveolar bone 5. (10) serves to strengthen the fixing force.

As shown in FIG. 4, the bevel portion 25 extends upward from the upper end of the main body portion 21 and is linearly reduced in diameter, and the structural portion of the bevel portion 25 is reduced. Due to the shape, the alveolar bone 5 may be overgrown, thereby preventing the fastening between the fixture 10 and the abutment 2 to be prevented. In addition, the bevel portion 25 also serves to double the stability of the fixture by inhibiting the fixture 10 to rise upward when the bone fusion of the alveolar bone 5 to the fixture 10 is completed.

Fixture body 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 in the fixture body 20 of the present embodiment, the fixation of the fixture 10 to the alveolar bone 5 can be easily performed, and also when the implantation is completed, the fixture for the alveolar bone 5 is completed. The fixing force of (10) can be improved.

Male thread 30 of the present embodiment, as shown in detail in the enlarged view of Figure 4, the vertical section 31 and the vertical section 31 is provided in substantially parallel with the diet axis of the fixture body (20) Lower slope section 33 is provided to be inclined downward from the bottom of the, and the upper slope section 35 is provided to be inclined upward from the top of the vertical section 31. Here, the inclination θ1 of the upper inclination section 35 has a larger value than the inclination θ2 of the lower inclination 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 along the longitudinal direction of the fixture 10, and the inclination θ2 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 θ2. 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 (θ1) 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 θ2 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.

However, in the present exemplary embodiment, the inclination θ2 of the lower inclination section 33 has a smaller value than the inclination θ1 of the upper inclination section 35, but the lower inclination section and the upper inclination section have the same inclination. Of course, it can be arranged to have.

The internal coupling groove 40, as shown in Figure 4, abutment (2, Fig. 1), and abutment screw (3, Fig. 1) for coupling the abutment 2 to the fixture (10) Are combined). The internal coupling groove 40, the abutment coupling groove 41 and the abutment coupling groove 41 is formed recessed inward from the top surface of the fixture body 20, the diameter of the cross-section is reduced toward the inner direction It is provided with a screw coupling groove 45 is formed recessed in the inner direction from the bottom of the regular internal thread 46 is formed on the inner surface.

The abutment coupling groove 41 is a portion to which the lower end of the abutment 2 is partially inserted and coupled. Therefore, the shape of the abutment coupling groove 41 is provided in a shape corresponding to the lower end of the abutment (2).

As shown in FIG. 4, the screw coupling groove 45 is a part to which the abutment screw 3 penetrated to the abutment 2 is partially coupled. That is, the abutment 2 is inserted into the abutment coupling groove 41, and then the abutment screw 2 is firmly fixed to the fixture 10 by coupling the abutment screw 3 to the abutment 2 and the screw coupling groove 45. Can be combined.

On the other hand, in the conventional case, when the fixture is placed in the alveolar bone with relatively small bone density, the fixation for the alveolar bone does not proceed densely even if the bone fusion period for healing after the placement of the fixture has elapsed several months. As described above, there is a problem that can not secure the fixing force of the chur.

However, the fixture 10 of the dental implant of the present embodiment, by promoting the bone formation of the alveolar bone 5 around the fixture body 20 during this bone fusion period of the fixture 10 to the alveolar bone 5 It further includes a charging space 50 that can strengthen the fixing force.

As shown in FIGS. 4 to 6, the filling space 50 of the present embodiment is formed through the bone axis material 60 to promote the bone formation of the alveolar bone 5 through the central axis of the fixture body 20. ), Ie, in the radial direction of the fixture body 20 from the outside of the first filling space 51 filled with the bone-forming protein (60, BMP, Bone Morphogenetic Protein) of the present embodiment, and the fixture body 20. Three second filling spaces are formed obliquely through and are in communication with the first filling space 51 and filled with the bone forming material 60 that promotes bone formation of the alveolar bone 5, that is, the bone forming protein 60 of the present embodiment. 55 is provided.

However, in the present embodiment, the first filling space 51 is formed to penetrate along the central axis direction of the fixture body 20, and the second filling space 55 is formed to communicate with the first filling space 51. Although the case will be described, the second filling space 55 may be formed through the radial direction from the outer surface of the fixture body 20 without communicating with the first filling space 51.

The first filling space 51 of the present embodiment is formed to penetrate from the bottom surface of the fixture body 20 to the bottom surface of the screw coupling groove 45 of the internal coupling groove 40. The first filling space is filled with bone-forming protein 60 to promote the formation of the alveolar bone 5. Here, the bone forming protein 60 is a kind of biological protein, and plays a role of promoting bone formation of the alveolar bone 5 by transmitting an activity signal to osteoblasts forming bone (alveolar bone 5).

Therefore, after the fixation 10 of the present embodiment is completed in the drill hole 7 of the alveolar bone 5, the bone forming protein 60 filled in the first filling space 51 is formed in the drill hole 7. It may be supplied to the alveolar bone portion 5a forming the bottom (see FIG. 6) to promote bone formation of the alveolar bone portion 5a forming the bottom of the drill hole 7. Accordingly, even if the bone density of the alveolar bone 5 into which the fixture 10 is placed has a slightly smaller value, the bone forming protein 60 filled in the first filling space 51 may form the bone formation of the alveolar bone 5. By facilitating, bone fusion of the fixture 10 to the alveolar bone 5 can be made firm during the healing period.

On the other hand, as described above, the first filling space 51 is formed through the central axis of the fixture body 20. Therefore, even after completion of the fixture 10 of the present embodiment, the bone-forming protein 60 may be continuously filled in the first filling space 51. In other words, the bone-forming protein 60 filled in the first filling space 51 is chemically reacted with the alveolar bone 5 so that the amount thereof decreases over time, in which case the communication with the internal coupling groove 40 The bone-forming protein 60 may be filled with the first filling space 51 so that bone formation of the alveolar bone 5 through the bone-forming protein 60 may be continuously performed during the bone fusion period.

In addition, as shown in FIGS. 4 and 6, the lower end portion of the first filling space 51 is provided as an enlarged diameter space 52 in which the diameter of the cross section is increased downward. Accordingly, the bone forming protein 60 may contact the alveolar bone portion 5a forming the bottom of the drill hole 7 over a wider range, thereby promoting bone formation of the alveolar bone 5.

Meanwhile, as illustrated in FIGS. 4 to 6, the second charging space 55 is provided to communicate with the first charging space 51. In more detail, the three second filling spaces 55 are provided at equal intervals 120 degrees along the circumferential direction of the fixture body 20, but the end portions of the three second filling spaces 55 in the inner direction are By crossing at one point of the first charging space 51, the three second charging spaces 55 and the first charging space 51 have a structure in communication with each other.

Therefore, the bone forming material 60, ie, the bone forming protein 60 of the present embodiment, may be filled through the opening of the second filling space 55 formed on the outer surface of the fixture body 20 as well as the first. The bone formation protein 60 may also be charged in the second filling space 55 through the filling space 51.

In addition, due to the communication structure, the bone formation protein 60 may be pre-filled in the filling space 50, and then the post-installation of the fixture 10 may proceed, but even after the fixture 10 is implanted, the inter The bone-forming protein 60 can be introduced through the first filling space 51 in communication with the null coupling groove 40, so that the bone-forming protein is also in the second filling space 55 in communication with the first filling space 51. 60 may be charged.

On the other hand, the bone-forming protein 60 filled in the second filling space 55, by promoting the bone formation of the inner wall portion (5b, Fig. 6) of the alveolar bone 5 to which the fixture body 20 is coupled The bone density of the inner wall portion 5b of the alveolar bone 5 can be improved.

In other words, after implanting the fixture 10, the bone forming protein 60 supplied from the second filling space 55 is drilled during the period of bone fusion of the fixture 10 to the alveolar bone 5. It is possible to promote bone formation of the alveolar bone portion 5b forming the inner wall of 7), thereby improving the bone density of the alveolar bone portion 5b which chemically reacts with the bone-forming protein 60, thereby increasing the alveolar bone (5). Fixing force of the fixture 10 for the) can be improved.

Meanwhile, as described above, the first filling space 51 and the second filling space 55 are penetrated on the fixture body 20 to communicate with each other, and diamond (C) of the chemical bonding structure of carbon (C) atoms is formed. Penetratingly formed into substantially the same shape as the net structure. In the case of a mesh structure, which is a chemical bonding structure of diamond, four carbon atoms are bonded around one carbon atom, and when the four carbon atoms are connected in an imaginary line, they have a shape substantially similar to a tetrahedron.

The charging space part 50 of the present embodiment also includes a first charging space 51 and three second charging spaces 55 around the intersection of the first charging space 51 and the three second charging spaces 55. ) Is penetrated on the fixture body 20, and the penetrating direction is a direction in which four carbon atoms surrounding one carbon atom are disposed. That is, the first filling space 51 penetrates in the direction of the central axis of the fixture body 20, and the second filling space 55 penetrates in a direction inclined with respect to the penetrating direction of the first filling space 51. It is formed.

Therefore, even if one region of the interior of the fixture 10 is empty by the first filling space 51 and the second filling space 55, the fixture 10 may maintain rigidity, and thus the actual alveolar bone 5 may be maintained. Even after a long time after the fixture 10 is placed, the shape of the fixture 10 may be prevented from being deformed.

However, in the present exemplary embodiment, the penetrating directions of the first filling space 51 and the three second filling spaces 55 are substantially the same as the bonding directions of the chemical bonding structure of the carbon atoms, but the scope of the present invention is The present invention is not limited thereto, and it is obvious that the filling spaces of the filling space part 50 may not only have a different number, but may also be penetrated in different directions.

Hereinafter, a process of placing the fixture 10 of the dental implant 1 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. Subsequently, the fixture 10 is positioned in the drill hole 7 of the alveolar bone 5 and then the fixture 10 is rotated by rotating the fixture 10 using a handpiece (not shown). Into the inner direction of the drill hole 7.

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

After the placement of the fixture 10 is completed, the healing abutment (not shown) or the cover screw (not shown) is combined, and then a period of bone fusion for healing may be obtained. At this time, the bone-forming protein 60 filled in the filling space 50 formed through the fixture body 20 forms the bottom of the alveolar bone 5a and the drill hole 7 forming the bottom of the drill hole 7. The bone formation of the alveolar bone portion 5b forming the sidewalls is promoted, and thus, the bone density of the portion may be improved, so that the fixation force of the fixture 10 with respect to the alveolar bone 5 may be improved.

Thus, according to this embodiment, by having a structure capable of filling the bone forming protein 60 in the filling space 50 formed in the fixture body 20, the fixture 10 to the alveolar bone 5 The bone formation of the alveolar bone 5 around the fixture body 20 may be promoted during the healing period in which the bone fusion is completed after completion of the implantation, thereby fixing the fixation force of the fixture 10 to the alveolar bone 5. There is an effect that can be improved more.

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

7 is a perspective view of a fixture of a dental implant according to a second embodiment of the present invention, Figure 8 is a view showing a state of the implant of the dental implant shown in Figure 7 implanted in the alveolar bone.

As shown in these figures, the fixture 110 of the dental implant according to the second embodiment of the present invention is different from the abutment 2 unlike the fixture 10 (see FIG. 2) of the first temporary example described above. As a fixture 110 of a dental implant in which a fixture 10 is integrated, a fixture body 120 and a fixture body 120 having a male thread 130 formed on at least one section of an outer surface thereof. It includes a filling space 150 is formed through the central axis direction is filled with bone-forming protein (160, BMP, Bone Morphogenetic Protein) to promote bone formation of the alveolar bone (105).

The fixture body 120 extends upward from the upper end of the main body 121 and the main body 121 having the male thread 130 formed in at least one section of the outer surface, and is integrally formed with the main body 121. And the artificial tooth (not shown) includes a rent abutment 102 is coupled. Here, the abutment 102 is machined into a curved surface 102b in which one region is cut to form a flat plane 102a and one region of the plane 102a is recessed inwardly. By this, the bonding force with the artificial crown can be strengthened.

The charging space 150 is a portion formed through the central axis of the main body 121 and the abutment 102, and the main body charging space 151 is formed along the central axis of the main body 121. In addition, the abutment charging space 155 is formed along the central axis of the abutment 102 to communicate with the main body charging space 151. Therefore, even after the fixture 110 of the present embodiment is completed, the bone formation protein 160 may be charged into the main body filling space 151 through the abutment filling space 155, and thus the alveolar bone 105 may be filled. By promoting the bone formation of the fixation of the fixture 110 to the alveolar bone 105 can be strengthened.

On the other hand, a regular female thread 152 is formed on the inner surface of the body portion 121 forming the body portion filling space 151. Therefore, the bone forming protein 60 filled in the main body filling space 151 may be gradually supplied from the main body filling space 151 toward the alveolar bone 105 during the bone fusion period, and thus the alveolar bone 105 and the bone There is an effect that can improve the efficiency of the chemical reaction of the forming protein (160).

On the other hand, below, with reference to the accompanying drawings will be described a fixture of a dental implant according to a third embodiment of the present invention. However, the same description as that described in the fixture of the dental implant according to the above embodiments will be omitted.

FIG. 9 is a perspective view of a fixture of a dental implant according to a third embodiment of the present invention, and FIG. 10 is a view illustrating a state in which the fixture of the dental implant shown in FIG. 9 is placed in the alveolar bone.

As shown in these figures, the fixture 210 of the dental implant according to the third embodiment of the present invention, the fixture body 220, the body portion 221 and the abutment portion 202 is provided integrally And a filling space 250 which is formed to penetrate in the horizontal direction of the central axis direction and the central axis direction of the fixture body 220 and is filled with the bone forming protein 260 (BMP, Bone Morphogenetic Protein).

The charging space 250 of the present embodiment, like the charging space 50 (see FIG. 6) of the first embodiment described above, penetrates to communicate with each other in the direction of the central axis of the main body 221 and the abutment 202. The first filling space 251 is formed, and is formed through the radial direction of the body portion 221 so as to communicate with the first filling space 251 is formed obliquely through, the equal intervals along the circumferential direction of the body portion 221 Three second charging spaces 255 are provided.

Accordingly, not only the alveolar bone portion 205a forming the bottom of the drill hole 207 adjacent to the lower end of the first filling space 251 but also the inner wall of the drill hole 207 adjacent to the opening portion of the second filling space 255. The bone-forming protein 260 may be supplied to the alveolar bone 205b to promote bone formation of the alveolar bone 205, thereby enhancing the fixing force of the fixture 210 to the alveolar bone 205.

In the first embodiment described above, the case where the inner surface of the fixture body forming the filling space part is smooth has been described, and in the second embodiment, the case where the female thread is formed on the inside surface of the fixture body forming the filling space part is described. However, if manufacturing is possible, it is obvious that grooves or protrusions may be provided on the inner surface of the fixture body forming the filling space.

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 the dental field.

Claims

Fixture body is implanted in the drill hole drilled in the alveolar bone in the oral cavity, the male body formed at least one section of the outer surface; And

And a filling space portion formed through the central axis of the fixture body and having a first filling space filled with a bone forming material for promoting bone formation of the alveolar bone.
The method of claim 1,

Fixture of a dental implant, characterized in that the lower end of the first filling space is provided with an enlarged diameter space that the diameter of the cross section is increased toward the lower side.
The method of claim 1,

In the charging space portion,

Dental implants, characterized in that formed in the radial direction of the fixture body from the outer surface of the fixture body, the second filling space is filled with a bone forming material for promoting bone formation of the alveolar bone Fixture.
The method of claim 3,

The second filling space is penetrated in the radial direction of the fixture body so as to communicate with the first filling tube, the dental implant, characterized in that penetrating in the direction inclined with respect to the penetrating direction of the first filling space. Fixture.
The method of claim 3,

The second filling space is a fixture of a dental implant, characterized in that spaced apart from each other along the circumferential direction of the fixture body are arranged at equal intervals.
The method of claim 5,

The first filling space and the second filling space of the dental implant, characterized in that penetrating formed on the fixture body to be substantially the same as the chemical bonding structure of the carbon atoms.
The method of claim 1,

The bone-forming material to be filled in the filling space is a fixture of a dental implant, characterized in that the bone forming protein (BMP, Bone Morphogenetic Protein).
The method of claim 1,

Fixture of a dental implant, characterized in that any one of the female thread and groove is formed on the inner surface of the fixture body forming the first filling space.
The method of claim 1,

It is characterized in that it further comprises an internal (Internal) coupling groove which is formed in the indentation in the inner direction from the top surface of the fixture body detachably coupled to the abutment screw for detachably coupling the abutment to the upper portion of the fixture body Dental fixture implants.
The method of claim 9,

The internal coupling groove portion,

An abutment coupling groove recessed inward from an upper end of the fixture body, the diameter of the cross section being reduced toward the inward direction, and the abutment being partially drawn in and coupled; And

The recess of the dental implant is formed recessed inward from the lower end of the abutment coupling groove, the screw coupling groove formed with a female thread for coupling the male thread formed on the outer surface of the abutment screw.
The method of claim 1,

The fixture body,

A main body portion in which a male thread is formed in at least one section of the outer surface; And

Extending upwardly from an upper end of the main body part and integrally formed with the main body part, and including a supporter for engaging an artificial crown;

The first filling space of the filling space portion of the dental implant, characterized in that penetrating through the central axis direction of the abutment portion.
The method of claim 11,

The first filling space,

A main body filling space formed along a central axis of the main body portion; And

It includes a rent-in-house filling space is formed along the central axis of the rent,

Fixture of a dental implant, characterized in that the female thread is formed on the inner surface of the body portion forming the body portion filling space.
The method of claim 11,

In the charging space portion,

The second filling space is formed in the radial direction from the outer surface of the main body portion in the radial direction to communicate with the first filling space, the second filling space is filled with bone forming material for promoting bone formation of the alveolar bone. Dental implant fixtures.