WO2010126301A2 - Fixture for use in dental implant - Google Patents

Abstract

Disclosed is a fixture for use in a dental implant. The fixture for use in a dental implant comprises: a main body which is implanted in a drill hole formed in an alveolar bone in an oral cavity, and which has an outer surface with a male screw thread; and an alveolar bone contact cutout portion which is formed by cutting out a portion of a lower end of the main body along the radial direction of the main body, and which is brought into contact with the alveolar bone introduced therein when the main body is implanted in the drill hole of the alveolar bone. The fixture of the present invention is advantageous in that a portion of the alveolar bone which forms the bottom of the drill hole is introduced into the alveolar bone contact cutout portion, to thereby increase the contact area between the fixture and the alveolar bone as compared to conventional fixtures, and to promote the growth of the alveolar bone during curing when bone morphogenetic protein is bonded to the inside of the alveolar bone contact cutout portion, thus significantly improving 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 fixed bonding force to the alveolar bone than conventional.

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 is coupled to the fixture to maintain the binding state before the abutment is bonded to the fixture, that is, during the period of fixation 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 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 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.

On the other hand, in the conventional dental implant, when the bone bone is placed in the alveolar bone with high bone density, the bone fusion of the fixture to the alveolar bone can be made firmly, for example, when the fixture of the dental implant is placed in the alveolar bone with a relatively low bone density, Even after several months of bone fusion, the bone fusion of the fixture to the alveolar bone does not proceed densely and thus the reliability of the dental implant procedure may be deteriorated.

Therefore, the development of a new dental implant fixture that can improve the fixation of the fixture to the alveolar bone by promoting the formation of the alveolar bone by the bone formation protein (BMP, Bone Morphogenetic Protein) forming the alveolar bone during the bone fusion period. This is necessary.

An object of the present invention, by introducing the alveolar bone portion forming the bottom of the drill hole into the inner side of the alveolar bone incision can not only increase the contact area with the alveolar bone, but also bind the bone-forming protein to the inner side of the alveolar bone incision If during the healing period can promote the growth of the alveolar bone, thereby providing a fixture of the dental implant that can significantly improve the fixed bonding force with the alveolar bone than before.

According to the present invention, when the alveolar bone portion forming the bottom of the drill hole is introduced into the alveolar bone incision, the contact area with the alveolar bone can be increased as compared with the conventional art, and when the bone-forming protein is coupled to the inner side of the alveolar bone incision. During the healing period, it is possible to promote the growth of the alveolar bone, which can significantly improve the fixed binding force with the alveolar bone than before.

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 front view of FIG. 2.

4 is a bottom view of FIG. 2.

5 is a cross-sectional view of FIG. 2.

6 is a plan view of FIG. 2.

7 is a view showing a state of contact between the alveolar bone incision and the alveolar bone shown in FIG.

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

9 is a view showing the shape of the alveolar bone contact incision of the fixture according to the third embodiment of the present invention.

10 is a perspective view showing the shape of the alveolar bone contact incision of the fixture according to the fourth embodiment of the present invention.

An object of the present invention, in accordance with the present invention, is placed in the drill hole drilled in the alveolar bone in the oral cavity, the outer body portion is formed with male thread; And an alveolar bone contact incision that is formed by cutting at least a portion along the radial direction of the torso in the lower end region of the torso, and allowing the alveolar bone to be inserted and contacted when the torso is placed in the drill hole of the alveolar bone. It is achieved by a fixture of a dental implant.

Here, the bone formation protein (BMP, Bone Morphogenetic Protein) may be combined inside the alveolar bone contact incision.

The alveolar bone contact incision may be one incision formed through the incision along the radial direction of the torso in the lower end region of the torso.

Alternatively, the alveolar bone contact incision, the first incision is formed through the cut along the radial direction of the body portion in the lower end region of the body portion; And a second cutout that is cut along the radial direction of the trunk portion in the lower end region of the trunk portion and is cut through in the horizontal direction of the first cutout portion.

The alveolar bone contact incision may have a taper shape that becomes narrower inward from the bottom surface of the trunk portion.

At least a portion of the inner surface of the trunk portion forming the alveolar bone incision may be provided with a flat cutting surface.

A plurality of grooves may be recessed in an inner surface of the trunk portion forming the alveolar bone contact incision along the transverse direction of the trunk portion.

The body portion, the main body portion that the male thread is formed on the outer surface; A tapered body portion extending from a lower end of the main body portion and provided integrally, the diameter of which decreases downwardly; And it is provided extending from the upper end of the main body portion is provided integrally, it may include a bevel portion gradually decreasing the diameter of the cross-section toward the top.

It may include an internal coupling groove which is formed recessed inward from the upper surface of the body portion is detachably coupled to the abutment screw for detachably coupling the abutment to the upper portion of the body portion.

The internal coupling groove portion is formed in a recess in the inner direction from the upper end of the body portion, the diameter of the cross-section is reduced toward the inner direction, the abutment coupling groove that the abutment is partially drawn in and coupled; 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 abutment coupling groove may be provided with a plurality of protrusion coupling grooves are formed in a recess from the surface of the abutment coupling groove and a plurality of protrusion coupling grooves which are detachably inserted into a plurality of protrusions protruding from the abutment.

The outer surface of the corner region of the upper end of the body portion may be formed in the display groove which is disposed substantially in the same radial direction as the plurality of protrusion coupling grooves to indicate the position of the protrusion coupling groove.

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 an embodiment of the present invention, which is placed as a root, abutment 2 coupled to fixture 10, and abutment 2 fixed to fixture 10 Abutment screw (3, A) and an artificial crown (not shown, coupled to the abutment 2) includes an artificial crown.

According to this configuration, after implanting the fixture 10 according to the first embodiment of the present invention in a drill hole 7 (see FIG. 7) formed in the alveolar bone 5, the abutment ( 2) is coupled to the fixture 10, the procedure of the dental implant (1) can be proceeded by joining the pre-made artificial dental crown to the outer surface of the abutment (2). 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 a first embodiment of the present invention shown in FIG. 1, FIG. 3 is a front view of FIG. 2, FIG. 4 is a bottom view of FIG. 2, and FIG. 5 is a view of FIG. 2 is a cross-sectional view, and FIG. 6 is a plan view of FIG. 2, and FIG. 7 is a view illustrating a state of contact between the alveolar bone contact incision and the alveolar bone shown in FIG. 2.

As shown in these figures, the fixture 10 according to the first embodiment of the present invention is a part that is placed in the drill hole 7 of the alveolar bone 5 (see FIG. 7) and serves as an artificial root. It is implanted in the drill hole 7 drilled in the alveolar bone 5 and formed with a male thread 30 on the outer side, and the recess is formed in the inner direction from the upper end surface of the trunk 20. ) And an inner coupling groove 70 to which the abutment screw 3 for coupling the upper portion of the fixture 10 is coupled, and the radial direction of the trunk portion 20 in the lower region of the trunk portion 20. It is formed along the cut and includes the alveolar bone contact incision 50 to increase the cutting force as well as to increase the contact area of the alveolar bone 5 with respect to the fixture (10).

2 and 3, the main body 20 of the present embodiment occupies the largest section of the body 20, the main body portion is formed with a regular male thread 30 on the outer surface 21, a tapered body portion 23 having a tapered shape in which the diameter of the cross section decreases downwards from the lower end of the main body portion 21, and from the upper end of the main body portion 21; It is provided extending and includes a bevel portion 25 is gradually reduced in diameter of the cross-section toward the top.

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 regularly arranged along its longitudinal direction. Formed. The main body portion 21 is provided in a substantially parallel structure or is provided to have an insignificant inclination even though the inclination toward the lower side is uniform, and the inner wall of the alveolar bone 5 forming the drill hole 7 is uniform. Can be combined at one pressure.

Tapered body portion 23 is formed extending from the lower end of the main body portion 21 is formed integrally with the main body portion (21). 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 After the main body portion 21 of a long section immediately after it can be introduced into the drill hole 7 of the alveolar bone 5, the orientation of the fixture 10 relative to the alveolar bone 5 can be accurately positioned at the time of initial placement. have.

As shown in FIG. 3, 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.

As shown in FIGS. 5 and 6, the internal coupling groove 70 includes an abutment column 2 (see FIG. 1) and an abutment screw 3 for coupling the abutment column 2 to the fixture 10. ) Is combined. The internal coupling groove 70 is recessed in the inner direction from the top surface of the body portion 20, but the abutment coupling groove 71 and the abutment coupling groove 71 of the diameter of the cross-section is reduced toward the inner direction It is provided with a screw coupling groove 75 formed recessed in the inner direction from the lower end and a regular female thread 76 is formed on the inner surface.

The abutment coupling groove 71 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 71 is provided in a shape corresponding to the lower end of the abutment (2). The surface of the abutment coupling groove 71 is provided with a projection coupling groove 72 recessed from the surface at equal intervals. That is, three projection coupling grooves 72 are provided spaced at intervals of 120 degrees.

The protrusion coupling groove 72 is inserted into the protrusion (not shown) protruding from the surface of the lower end of the abutment (2). That is, the abutment coupling groove 71 and the abutment 2 are tailored by the shape. Therefore, it is possible to prevent the abutment 2 from rotating arbitrarily with respect to the fixture 10.

As shown in FIG. 5, the screw coupling groove 75 is a portion to which the abutment screw 3 penetrated to the abutment 2 is partially coupled. That is, after the abutment 2 is inserted into the abutment coupling groove 71, 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 75. Can be combined.

On the other hand, when the abutment 2 is inserted into the abutment coupling groove 71 described above, since the size of the fixture 10 and the abutment 2 is very small, the abutment 2 is precisely mounted on the abutment coupling groove 71. It may not be easy to combine. That is, as described above, the abutment coupling groove 1 is provided with a projection coupling groove 72, and the abutment 2 is formed with projections that are coupled to it, but the position of them is not easy to identify the fixture ( 10) and the abutment (2) may not be easily coupled.

Thus, in the present embodiment, in order to be able to accurately identify the position of the projection engaging groove 72 from the outside, so as to identify the position of the projection coupling groove 72 in the corner region of the upper end of the body portion 20. The display groove 26 is provided.

2, 3 and 6, the display groove 26, the upper end of the body portion 20 so as to be located on the extension line connecting the center of the body portion 20 and the projection engaging groove 72. It is formed by recessing in the corner area. Therefore, the operator can accurately identify the position of the projection coupling groove 72 through the position of the display groove 26, and thus can accurately couple the abutment 2 to the fixture 10.

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 may be regularly provided along the circumferential direction.

The male thread 30 formed in the trunk portion 20 may not only improve the fixing force of the fixture 10 to the alveolar bone 5 but also may be easily placed in the fixture 10 against the alveolar bone 5. Make sure This male thread 30, as shown in the enlarged view of Figure 5, the vertical section 31 is provided in parallel with the axis of the body portion 20, and downward from the lower end of the vertical section 31 Lower slope section 33 is provided to be inclined, and the upper slope section 35 is provided to be inclined upward from the upper end of the vertical section 31.

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, and thus the attachment of the fixture 10 can be easily performed.

The inclinations θ1 and θ2 of the lower inclined section 33 and the upper inclined section 35 are substantially the same as shown in the enlarged view of FIG. 5, and in this embodiment, their inclinations θ1 and θ2. May have a value of 30 degrees. However, the scope of the present invention is not limited thereto, and the male threaded mountain 30 may have an upper sloped section and a lower sloped section having different inclinations.

On the other hand, the alveolar bone contact incision 50 is a portion provided in the lower end region of the trunk portion 20, because the alveolar bone portion 5a (see Fig. 7) forming the bottom of the drill hole 7 can be drawn in Compared with the conventional fixture 10, the contact area with the alveolar bone 5 can be increased, and thus, the coupling force between the alveolar bone 5 and the fixture 10 can be significantly improved than before.

That is, the conventional fixture (not shown) has a limit in improving the bonding force with the alveolar bone by increasing the contact area because the contact with the alveolar bone is made only on the outer surface of the trunk portion in which the male thread is formed. For example, if the male thread of the body is densely formed in order to increase the contact area with the alveolar bone, it is difficult to apply because the area of contact with the alveolar bone can be increased but some sacrifice is required in the fields such as ease of implantation. There are disadvantages.

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

The alveolar bone contact section 50, as shown in detail in Figures 2 to 4, is cut through the radial direction of the trunk portion 20 at the lower end of the trunk portion 20 is formed through the cross when viewed from below It is formed by cutting in two directions to form a shape.

In more detail, the alveolar bone contact section 50 of the present embodiment is cut along the radial direction of the trunk portion 20 at the lower end region of the trunk portion 20 as shown in FIGS. 2 and 4. And a first cutout portion 51 that is formed through and a second cutout portion 55 that is cut through in the horizontal direction of the first cutout portion 51 in the lower end region of the trunk portion 20.

The first cutout 51 and the second cutout 55 have substantially the same shape. That is, it is cut and formed through the same depth and the same width. However, the scope of the present invention is not limited thereto, and the first cutout portion and the second cutout portion may be provided in different shapes.

In addition, the first cutout 51 and the second cutout 55 have a taper shape in which the left and right widths gradually decrease from the lower end of the trunk portion 20 upward. Therefore, the alveolar bone portion 5a forming the bottom of the drill hole 7 can be easily introduced into the first incision 51 and the second incision 55, and also implant re-treatment, for example In order to remove the fixture 10 from the drill hole 7 of the alveolar bone 5, the procedure is performed by preventing the alveolar bone part 5a from being caught by the first incision 51 and the second incision 55. Work of the fixture 10 for can also be made smoothly.

On the other hand, since the first cutout portion 51 and the second cutout portion 55 are radially cut in the lower end region of the trunk portion 20 and are formed through, the lower end portion of the trunk portion 20 is shown in FIG. 2. As shown, it has a pointed shape like the root of a real tooth. Thus, as the root of the actual tooth is firmly fixed to the alveolar bone 5, the lower end of the trunk portion 20 forming the alveolar bone contact incision 50 may be deeply fixed to the alveolar bone 5, thereby causing the alveolar bone ( The fixing force of the fixture 10 with respect to 5) can be significantly improved.

In addition, some surfaces of the inner surfaces of the first cutout 51 and the second cutout 55 may be flat cutting surfaces 50s, as shown in FIGS. 2 and 4. Therefore, when the trunk portion 20 is placed in the drill hole 7 formed in the alveolar bone 5, the cutting surfaces 50s of the first cut portions 51 and the second cut portions 55 are drill holes 7. The alveolar bone portion 5a forming the bottom of the can be cut. That is, the cutting surfaces 50s of the first cutouts 51 and the second cutouts 55 can perform cutting work of the alveolar bone, and fix them to the inner region of the alveolar bone part 5a that is hard and not easily inserted. The lower end of the chur 10 will be able to be drawn smoothly.

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 drilled by rotating the fixture 10 using a handpiece (not shown). ) To the inside direction.

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 formed on the outer surface of the 20 is self-tapped into the alveolar bone 5 forming the side wall of the drill hole 7 and is introduced therein so that the implantation of the fixture 10 to the alveolar bone 5 may be completed. have.

However, the alveolar bone portion 5a is the trunk portion 20 when the lower end portion of the trunk portion 20 contacts the alveolar bone portion 5a that forms the bottom of the drill hole 7 during the placement of the fixture 10. The alveolar bone 5 is brought into the inner side of the alveolar bone contact incision 50 formed by being cut in the lower end region of the alveolar bone.

Thereafter, the fixture 10 is subjected to a predetermined period for the bone fusion 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 portion 20 but also the alveolar bone contact incision. The fusion between the alveolar bone 5 and the fixture 10 may be smoothly introduced between the inner surfaces of the portion 50.

As described above, according to the present embodiment, the alveolar bone portion 5a forming the bottom of the drill hole 7 is introduced into the alveolar bone contact incision 50 of the trunk portion 20 so as to be in contact with the alveolar bone 5. The area can be significantly increased, thereby improving the fixing force of the fixture 10 against the alveolar bone 5.

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.

FIG. 8 is a view illustrating a shape in which a fixture of a dental implant according to a second embodiment of the present invention is implanted in an alveolar bone, and as shown therein, a fix of a dental implant according to a second embodiment of the present invention The chew 110 is coupled to the inner side of the alveolar bone incision 150 and the alveolar bone incision 150, which is substantially the same as the alveolar bone incision 50 (see FIG. 2) of the first embodiment described above. Bone formation protein 160 to promote bone formation of 105.

Bone Morphogenetic Protein (160, BMP, Bone Morphogenetic Protein) is a type of biological protein that plays a role in promoting the formation of alveolar bone 105 by transmitting an activity signal to osteoblasts forming bone (alveolar bone). Therefore, the alveolar bone 105 located near the alveolar bone incision 150 may be chemically reacted with the bone-forming protein 160 to promote the formation of the alveolar bone 105, thereby causing the bone density of the alveolar bone 105. Is improved so that the fixing force of the fixture 110 to the alveolar bone 105 can be further strengthened.

 In particular, after the fixture 110 is placed in the alveolar bone 105 has a bone fusion period of several months, during which the bone-forming protein 160 promotes the formation of the adjacent alveolar bone 105 to the alveolar bone 105 And the bone fusion of the fixture (110) to be able to proceed more firmly than the conventional.

On the other hand, the bone-forming protein 160, not only promotes the formation of the alveolar bone 105, but also the innermost point of the alveolar bone contact incision 150 and the alveolar bone (when the fixture 110 is completed in the alveolar bone 105) 105) may serve to eliminate the empty space that may occur between.

That is, when the fixture 110 is implanted into the alveolar bone 105 in a state in which the bone forming protein 160 is not coupled to the inner side of the alveolar bone incision 150, the inner side of the alveolar bone incision 150 is The alveolar bone 105, which forms the bottom of the drill hole 107 may not be fully introduced, which causes a slight empty space between the inner point of the alveolar bone incision 150 and the alveolar bone 105, thereby causing the alveolar bone ( Fixing force of the fixture 110 with respect to the 105 may be weakened, the bone-forming protein 160 of the present embodiment is coupled to the inner point of the alveolar bone incision 150 so that this space does not occur, the alveolar bone 105 It is possible to prevent the coupling force of the fixture 110 to weaken.

As described above, according to the present embodiment, the fixture 110 is implanted in the alveolar bone 105 while the bone forming protein 160 is coupled to the inner side of the alveolar bone incision 150, thereby forming the bone forming protein 160. The formation of the surrounding alveolar bone 105 may be promoted, thereby increasing the bone density of the alveolar bone 105, thereby improving the fixing force of the fixture 110 to the alveolar bone 105.

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.

9 is a view showing the shape of the alveolar bone contact incision of the fixture according to the third embodiment of the present invention, as shown, the fixture 210 of the dental implant according to the third embodiment of the present invention The alveolar bone contact incision 250 has a first incision and a second incision, and the surface of the first incision and the second incision is provided with a plurality of grooves 254 recessed from the surface.

Therefore, the alveolar bone forming the bottom of the drill hole can be introduced between the groove grooves 254 to increase the contact area between the alveolar bone and the fixture 210, thereby fixing the fixture 210 to the alveolar bone ) Can significantly improve the binding force.

In addition, the bone-forming protein described above in the above-described embodiment can be coupled to the inside of the alveolar bone contact incision 250 of this shape, and thus bone fusion between the fixture 210 and the alveolar bone in the bottom region of the drill hole. Not only can it be promoted more than conventional, but also it can prevent the space between the inner surface and the alveolar bone of the alveolar bone contact incision 250.

On the other hand, below, with reference to the accompanying drawings will be described a fixture of a dental implant according to a fourth 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.

10 is a perspective view showing the shape of the alveolar bone contact incision of the fixture according to the fourth embodiment of the present invention, as shown, the fixture 310 of the dental implant according to the fourth embodiment of the present invention The alveolar bone contact incision 350 is provided with one incision 350 formed by cutting along the radial direction in the lower end region of the body portion (320).

Although not shown, not only bone-forming proteins may be coupled to the inside of the cutout 350, but groove grooves formed from the surface may be formed on the surface thereof.

In the above-described embodiments, the alveolar bone contact incision is formed by cutting in one direction, or bilaterally cut to have a cross shape, but is described above, but the alveolar bone contact incision is formed in multiple directions if it is easy to manufacture while maintaining the strength It may be provided with a plurality of incisions.

In addition, in another embodiment described above, the groove groove for increasing the contact area is formed in the inner surface of the alveolar bone contact incision, but if it is easy to manufacture, a plurality of protrusions protruding from the surface may be provided on the surface.

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 (12)

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 At least a portion is formed in the lower end portion of the body portion along the radial direction of the body portion is formed, the alveolar bone is inserted into the drill hole of the alveolar bone, characterized in that it comprises an alveolar bone incision contactable Dental implant fixtures. The method of claim 1, Fixture of a dental implant, characterized in that the bone formation protein (BMP, Bone Morphogenetic Protein) is coupled to the inner side of the alveolar bone contact incision. The method of claim 1, The alveolar bone contact incision is a fixture of a dental implant, characterized in that the incision is formed through the incision along the radial direction of the torso in the lower region of the body portion. The method of claim 1, The alveolar bone contact section, A first cut-out portion formed in the bottom portion of the body portion through the body portion in a radial direction; And Fixture of the dental implant, characterized in that in the lower end of the body portion in the radial direction of the body portion is cut along the first incision in the transverse direction is formed through the second incision formed through. The method according to claim 3 or 4, The alveolar bone contact incision is a fixture of a dental implant, characterized in that it has a taper shape that becomes narrower toward the inner direction from the bottom surface of the body portion. The method according to claim 3 or 4, At least a portion of the inner surface of the body portion forming the alveolar bone incision is a fixture of the dental implant, characterized in that provided with a flat cutting surface. The method according to claim 3 or 4, Fixture of the dental implant, characterized in that a plurality of groove grooves are formed in the inner surface of the body portion forming the alveolar bone contact incision along the longitudinal direction of the body portion. The method of claim 1, The body portion, A main body portion having the male thread formed on an outer surface thereof; A tapered body portion extending from a lower end of the main body portion and provided integrally, the diameter of which decreases downwardly; And The dental implant of the dental implant, characterized in that it is provided extending from the upper end of the main 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, Implants of the dental fixture characterized in that it comprises an internal coupling groove which is formed recessed inwardly from the upper surface of the body portion and the abutment screw detachably coupled to the upper portion of the body portion detachably. The method of claim 9, The internal coupling groove portion, An abutment coupling groove formed in an inward direction from an upper end of the body portion, the diameter of the cross section being reduced toward an inward direction, and the abutment column 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 10, The abutment coupling groove is provided with a plurality of protrusion coupling grooves formed at recesses from the surface of the abutment coupling groove to be detachably inserted into a plurality of protrusions protrudingly inserted into the abutment for dental implants. Chew. The method of claim 11, Fixing dental implants, characterized in that the outer surface of the upper edge portion of the body portion is formed in the same radial direction substantially the same as the plurality of projection engaging grooves indicating the position of the projection engaging grooves are formed recessed. Chew.

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