JP2003525690A - Inflatable implant that can be fixed immediately - Google Patents

Abstract

(57) [Summary] The present invention provides an implant that is closely fixed to the inner wall bone of an extraction hole immediately after a lower root portion of a fixture expands and extracts a tooth. The present invention relates to an implant including a fixture inserted and fixed in an extraction hole and an abutment coupled to an upper part of the fixture, wherein the fixture protrudes from an outer surface along a circumference. A plurality of threads are repeatedly formed in the longitudinal direction, a through hole is formed extending from the upper stage to the lower stage inside, and a locking projection formed with a screw passage hole at the center is integrated with the inner wall at a predetermined position from the upper stage. A fixture body projecting at the upper portion to define an upper abutment receiving portion and a lower nut receiving portion, wherein the lower stage is opened and at least one or more slots are formed from the lower stage to the first position; Is located at the abutment receiving portion locked by the locking projection, and the threaded body extends to a lower stage of the nut receiving portion through the screw through hole. A nut that is screwed with the main body of the screw and moves up and down by rotation of the screw in the nut receiving portion; a cross-sectional profile of an inner wall of the nut receiving portion is such that the nut is The fixture body is formed to move from the upper part to the lower part of the receiving part to the first position, and then the fixture body is pushed by the nut and starts expanding outward.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to implants, and more particularly to an expandable implant that can be immediately fixed. Further, the present invention can accommodate various shapes and sizes of tooth extraction holes formed in the bone of the gum after the tooth extraction, and a fixture that expands by being inserted into the tooth extraction hole and a simple structure on the top of the fixture. The present invention relates to an implant that is composed of an abutment connected to each other.

[0002]

[Prior art]

BACKGROUND ART Implant fixtures that are inserted into the extracted position so as to function as teeth are being developed and used in various forms, and recently, screw-type implant fixtures have been mainly used.

[0003]

[Problems to be Solved by the Invention]

However, when applying such a screw-type implant fixture,
There is a problem in inserting the implant fixture immediately after extracting the tooth or fixing the implant fixture when the width of the gum is narrow. That is, when the implant fixture is inserted immediately after the tooth extraction, the screw-type implant fixture is smaller in size than the upper portion where the tooth is extracted, and is not structured according to the tooth form, so that it is difficult to be fixed in the tooth extraction hole. This is because, for example, the anterior teeth and the premolars have a structure in which the anteroposterior width is larger than the lateral width of the teeth and the fact that the tooth root has two or three roots. In addition, when the gum width is narrow or when the gum is absorbed, there is a disadvantage that a part of the screw is exposed in the screw type implant fixture.

Further, the abutment connected to the upper part of the implant fixture is fixed to the implant fixture with a fastening screw, but there is a problem that the tooth mounting operation becomes complicated.

Further, if saliva invades along the gap between the fixture and the abutment, there is a problem that the bacteria are infected with the saliva and the fixture swings.

Therefore, an object of the present invention is to provide an implant in which the lower part of the root of the fixture is inflated and extracted, and then immediately fixed to the inner wall bone of the extraction hole.

Another object of the present invention is to provide an expandable implant that can accommodate various shapes and sizes of extraction holes formed in the bones of gums.

Another object of the present invention is to provide an implant in which an abutment and a fixture can be easily coupled.

Another object of the present invention is to provide an implant capable of preventing saliva from invading the inside of the fixture to prevent bacterial infection.

[0010]

[Means for Solving the Problems]

According to the present invention, in an implant composed of a fixture that is inserted and fixed in a tooth extraction hole and an abutment that is coupled to an upper portion of the fixture, the fixture has a plurality of screw threads that are circumferentially projected on an outer surface. Are repeatedly formed in the longitudinal direction, a through hole is formed inside from the upper stage to the lower stage, and a locking projection with a screw passage hole formed in the center is projected from the upper stage to a predetermined position integrally with the inner wall to Abutment receiving part and a lower nut receiving part are defined, and a lower part is opened, and at least one or more slots are formed from the lower part to the first position; Located in the abutment receiving part, the threaded body extending through the screw through hole to the lower part of the nut receiving part;
A nut that is screwed with the body of the screw and moves up and down in the nut receiving portion by the rotation of the screw. Immediately fixable inflatable implant formed so that the fixture body is pushed by the nut and begins to expand outward after moving to the position.

The nut has threaded through-holes formed on the inner side wall from the upper stage to the lower stage, and has a nut body having various planar shapes corresponding to the tooth extraction holes, and a nut formed on the upper stage of the body so as to project radially outward and fit into the slot. And a side surface profile of the nut body corresponds to a profile of the inner wall from the top of the nut receiving portion to the first position.

Further, an annular protrusion is formed on the surface of the locking protrusion on the abutment receiving portion side, an annular groove is formed in the head of the screw facing the annular protrusion, and the annular protrusion is fitted into the annular groove.

Preferably, the fixture further includes a cap that is coupled to a lower portion of the fixture body, and the cap has a hemispherical shape and has a screw receiving groove formed at a center thereof to receive a lower portion of the screw, and an inner lower portion of the fixture body. A screw is formed for connecting with the part.

Also, a neck is integrally formed on an upper step of the fixture body, and a screw is formed on an inner surface of the neck to be screwed with the abutment, and the abutment may have a linear shape or a square shape.

Further, an abutment is integrally formed on the upper stage of the fixture, and a screw is formed on an inner surface of the abutment so that the cover is screwed to the abutment.

In addition, as one embodiment, at least two slots are formed, the thickness of the fixture main body separated by the slots is different, and the guide into which the thick portion of the fixture main body is inserted into the nut in the longitudinal direction. Grooves are formed.

According to the present invention, in an implant including a fixture inserted and fixed in a tooth extraction hole and an abutment coupled to an upper portion of the fixture, the fixture includes a plurality of protrusions that are protruded along an outer circumference thereof. Screw threads are repeatedly formed in the longitudinal direction, a through hole is extended inside from the upper stage to the lower stage, and a locking projection with a screw passage hole formed in the center protrudes integrally with the inner wall at a predetermined position from the upper stage. And a fixture body having an upper abutment receiving portion and a lower nut receiving portion, the lower opening being opened to form at least one slot from the lower to the first position; Located in the abutment receiving part, and the threaded screw body extends through the screw through hole to the lower part of the nut receiving part. ; A threaded through hole is formed on the inner wall from the upper step to the lower step, the nut main body having various planar shapes corresponding to the tooth extraction hole, and the upper step of the main body projecting radially outward and fitted into the slot A guide protrusion, the nut body includes a nut screwed with the screw body and vertically moved by rotation of the screw, and the cross-sectional profile of the inner wall of the nut receiving portion is a parabolic shape having the first position as an apex. The side profile of the nut body corresponds to the profile of the inner wall from the top of the nut receiving part to the first position, so that after the nut moves to the first position, the fixture is pushed by the nut and starts to expand outward. Disclosed is a ready-to-fix inflatable implant formed in the.

Depending on the shape of the parabola or the side profile of the nut body, the extent and extent of expansion of the fixture body will vary.

[0019]

DETAILED DESCRIPTION OF THE INVENTION

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1, the implant 100 includes a fixture 1 and an abutment 40 coupled to the upper portion of the fixture 1.

The fixture 1 includes a fixture main body 10, a neck 20 integrally formed on the upper stage of the fixture 10, and a cap 50 selectively coupled to the lower stage of the fixture main body 10.

The overall shape of the fixture body 10 is preferably formed in a shape similar to that of the tooth, but for example, the outer diameter is reduced by the primary bending at the point A, and the lower stage is obtained by the secondary bending at the point B. Maintain a constant outer diameter up to. Of course, the same outer diameter may be maintained from the upper stage to the lower stage regardless of the shape of the teeth, but the fixture body 1
It is advantageous to fix 0 in the tooth extraction hole. In addition, a plurality of threads protruding along the circumference are repeatedly formed in the longitudinal direction on the entire outer surface of the fixture body 10 excluding the neck 20. As will be described later, this increases the contact area with the inner wall of the tooth extraction hole so that they can be closely adhered to each other, and can be deformed into various forms without being limited to the screw shape.

A screw 11 is formed on the outer surface near the lower step of the fixture body 10 and is screwed with the cap 50 as described later.

Further, the cross-sectional shape of the fixture body 10 can be manufactured in various forms corresponding to the shapes of the extraction hole and the gum of the gum. For example, referring to FIGS. 6a to 6c, a fixture body 10 having various cross-sectional shapes is shown. That is, it has various shapes such as a circle, an ellipse, and a quadrangle, corresponding to the cross-sectional shape of the tooth extraction hole and the gum of the gum, and the size can be variously changed. In this embodiment, the fixture body 1
6d and 6e, it is possible to form the fixture body 10 with different thicknesses, which will be described later.

A through hole is formed in the fixture body 10 so as to extend from the upper stage to the lower stage. A locking projection 15 having a through hole 17 in the center is projected from the upper stage to a predetermined position integrally with the inner wall. , An abutment receiving portion 18 in the upper space and a nut receiving portion 19 in the lower space.

A screw 22 is formed on the inner wall of the abutment receiving portion 18 to a certain depth from the upper stage, and is screwed with the abutment as described later. Further, the screw 30 is inserted through the through hole 17, the head of the screw 30 is locked by the locking projection 15,
The remaining body is located in the nut receiving portion 19. At this time, an annular protrusion 16 is formed on the surface of the locking protrusion 15 on the abutment receiving portion side, and a groove 36 is formed in the head of the screw 30 facing the annular protrusion 16 so as to be slidably coupled. Referring to FIGS. 7a to 7c, an annular protrusion 16 having various shapes of cross-sectional shapes is shown. For example, it is trapezoidal, triangular or semicircular. Further, referring to FIGS. 7d to 7f,
An annular protrusion 16 ′ is formed on the head of the screw 30, and the locking protrusion 1 facing this is formed.
It is also possible to form the groove 36 'on the surface of the No. 5 on the abutment receiving portion side.

A nut 60 is fitted into the body of the screw 30 located inside the nut receiving portion 19. Referring to FIG. 4, the nut 60 has a shape in which a diameter is gradually reduced from an upper stage to a lower stage, and a screw hole 62 is formed therethrough, and in one embodiment, guide protrusions 64 are formed on opposite sides of the nut 60.

Looking at the profile of the inner wall of the nut receiving portion 19, the inner diameter is gradually decreasing from the upper portion corresponding to the point A, and after the degree of decrease is decreased by the primary bending at the point C corresponding to the point B, At point D, the secondary bending increases the inner diameter. Therefore, it has a parabolic shape as a whole. The profile of such an inner wall is only an example on the assumption that the nut shown in FIG. 4 is applied, and as will be described later, any profile as long as the lower portion of the fixture body 10 can be expanded by the nut 60. Is also possible.

According to the present invention, at least one slot 14 that is open on the lower side from the lower side of the fixture body 10 to the position of the point B is formed. FIG. 1 shows that two such slots 14 are formed (the slots formed on the opposite side are not shown). The width of the slot 14 may be such that the guide protrusion 64 of the nut 60 described above is fitted therein and is slidable. A large number of slots 14 can be formed corresponding to the shape of the nut 60 shown in FIG. As described above, FIGS.
Reference character c denotes a case where the thickness of the fixture body 10 is constant, and two to four slots 14 are formed in each of which the guide protrusion 64 of the nut 60 is fitted. On the other hand, in FIGS. 6d and 6e, the fixture body 10 is formed to have different thicknesses, and the nut 60 is formed with the guide groove 66.
The portion 10 ′ having a large thickness of 0 is fitted into the guide groove 66.

On the other hand, as described above, the screw 42 is formed on the lower portion of the abutment 40 and is coupled to the screw 22 formed on the inner wall of the neck 20 in the abutment receiving portion 18.

A cap 50 is connected to the lower part of the fixture body 10 as shown in FIG.
As shown in FIG. 2, the cap 50 has a hemispherical shape, and a receiving groove 52 for receiving the end of the screw 30 is formed in the cap 50 so that the cap 50 can be connected to the screw 11 near the lower stage of the fixture body 10. A screw 54 is formed on the inner wall from the edge.

Hereinafter, the operation of the implant having the above structure will be described. When the tooth extraction hole is formed in the bone of the gum after the tooth extraction, the implant fixture 100 suitable for the size and shape of the tooth extraction hole is selected. At this time, the implant fixture 100 is provided with the screw 30 inserted therein and coupled to the nut 60, and the cap 50 coupled to the lower step.

Subsequently, the cap 50 is removed, and the fixture body 10 is fitted into the tooth extraction hole. At this time, as described above, when the fixture body 10 is formed in a stepwise manner, it is properly fitted into the tooth extraction hole.

After that, when the screw 30 is rotated using a predetermined tool, the guide protrusion 64 of the nut 60 is fitted into the slot 14 of the fixture body 10,
The nut 60 begins to move downwards along the screw 30. As described above, in the example shown in FIGS. 2, 4 and 6a, two guide protrusions 64 are formed and two corresponding slots 14 of the fixture body 10 are also formed.
Even if one guide protrusion 64 is fitted into each of the guide protrusions 64, the effect required by the present invention can be obtained.

When moving downward and reaching the portion C, the portion of the nut 60 excluding the guide protrusion 64 comes into contact with the inner wall of the fixture body 10. As described above, the degree of decrease is small with respect to the point C, but the inner diameter is gradually smaller. Therefore, after the point C, the fixture body 10 is pushed outward by the nut 60 and spreads outward. By appropriately changing the profile of the inner wall, the degree to which the fixture body 10 expands can be adjusted.

As described above, the thread 12 is formed on the outer surface of the fixture body 10,
If the fixture body 10 spreads outward, it will be in close contact with the inner wall of the tooth extraction hole.
Further, since the end of the screw thread 12 is sharp, the thread 12 is surely adhered to the inner wall of the bone extraction hole. Referring to FIG. 3, the nut 60 moves to a point D, and the fixture body 10 and the inner wall of the tooth extraction hole are completely brought into close contact with each other. Fixture body 1 in this state
0 is stuck in the tooth extraction hole and does not flow even if it moves up and down.

At this time, the lower part of the fixture body 10 is cap 50 as described above.
Since it has been removed, it expands outward in the shape of a wing. As another example, the cap 50
When fitting the fixture main body 10 into the tooth extraction hole without removing the above, the lower part of the fixture main body 10 is not expanded by the cap 50, so that the center of the fixture main body 10 should be maintained even if part of it is expanded. Therefore, there is an advantage that there is no movement due to expansion.

In this way, if the fixture body 10 is brought into close contact with the tooth extraction hole, the screw 3
0 does not rotate any more, and the groove 36 of the screw 30 and the annular projection 16 of the locking projection 15
Since they are closely attached to each other, it is possible to prevent saliva from invading the nut receiving portion 19 and infecting the gum bones with the bacteria contained in the saliva as described above.

Subsequently, the abutment 40 is attached to the neck 2 of the implant fixture 100.
Fit in 0. At this time, the abutment 40 can be either linear or rectangular depending on the situation. According to the above-described embodiment, the abutment 40 and the neck 20 are screwed together, but if necessary, the screws may be removed and the bonding may be performed using an adhesive.

FIG. 8 shows an integrated implant 200 according to another embodiment of the invention. The structure has almost the same structure as the separable implant 100 shown in FIG. 1, the neck 20 of the separable implant is eliminated, and the abutment 40 is attached to the fixture body 10.
It is integrally formed on the upper stage. A screw (not shown) is formed on the inner wall of the abutment 40 of the one-piece implant 200, and is coupled with a screw 72 formed on the cover 70.

That is, after the fixture main body 10 is set in the tooth extraction hole, the cover 70 is tightened to easily complete the surgery.

[0041]

【The invention's effect】

As explained above, immediately after extracting the tooth, expand the lower part of the fixture body corresponding to the root part to closely fix it to the inner wall bone of the tooth extraction hole, and join the attachment or cover to the upper part of the fixture body. Therefore, the operation time can be remarkably shortened, the operation can be facilitated, and the number of operations can be reduced by one operation. Therefore, there is an advantage that the pain and financial burden on the patient can be reduced.

In addition, since the groove of the screw and the annular projection of the locking projection are closely fitted to each other in the state where the fixture main body is in close contact with the tooth extraction hole, the abutment and the fixture main body or the cover and fixture main body are in contact with each other. Even if saliva invades during this period, it is possible to prevent the saliva from further advancing to the nut receiving part, and it is possible to prevent infection of the gums of the gums by the bacteria contained in the saliva.

In addition, the overall shape of the implant fixture is designed to be similar to a tooth, and the cross-sectional shape of the fixture main body is not only circular but also elliptical, square, trapezoidal, heart-shaped, double circular, triple circular, etc. As described above, there is an advantage that the surgical efficiency can be improved by appropriately applying it even when the pattern of the extraction hole or the bone of the gum is small or narrow.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, the fixture body can be manufactured in a cylindrical shape, and even if the nut is fitted in the screw backward unlike the above-described embodiment, the desired effect can be obtained by appropriately designing the profile of the inner wall of the nut receiving portion. .

Further, in the above-mentioned embodiment, the case where the implant of the present invention is applied to a tooth has been described, but it can also be used for industrial purposes. For example, it can be used when joining any two objects or when inserting and fixing an implant in a wall.

[Brief description of drawings]

[Figure 1]   FIG. 3 is an exploded perspective view showing a separable implant according to an embodiment of the present invention.

[Fig. 2]   FIG. 3 is a cross-sectional view for explaining the operation of the detachable implant included in FIG. 1.

[Figure 3]   FIG. 3 is a cross-sectional view for explaining the operation of the detachable implant included in FIG. 1.

[Figure 4]   FIG. 3 is a perspective view showing a nut according to an exemplary embodiment of the present invention.

[Figure 5]   FIG. 6 is a sectional view taken along line VI-VI in FIG. 2.

FIG. 6a   It is sectional drawing which showed the nut of various types.

FIG. 6b   It is sectional drawing which showed the nut of various types.

FIG. 6c   It is sectional drawing which showed the nut of various types.

FIG. 6d   It is sectional drawing which showed the nut of various types.

FIG. 6e   It is sectional drawing which showed the nut of various types.

FIG. 7a   It is sectional drawing which shows a saliva invasion prevention means, respectively.

FIG. 7b   It is sectional drawing which shows a saliva invasion prevention means, respectively.

FIG. 7c   It is sectional drawing which shows a saliva invasion prevention means, respectively.

FIG. 7d   It is sectional drawing which shows a saliva invasion prevention means, respectively.

[Fig. 7e]   It is sectional drawing which shows a saliva invasion prevention means, respectively.

FIG. 7f   It is sectional drawing which shows a saliva invasion prevention means, respectively.

[Figure 8]   FIG. 7 is an exploded perspective view showing an integrated implant according to another embodiment of the present invention.

[Explanation of symbols]

    1 fixture     10 Fixture body     15 Locking protrusion     16 annular protrusion     17 Through hole     18 Abutment receiving part     19 Nut receiving part     20 neck     22, 42 screws     30 screws     36 groove     40 Abutment     50 cap     60 nuts     62 screw holes     100 implants

[Procedure for Amendment] Submission for translation of Article 34 Amendment of Patent Cooperation Treaty

[Submission date] August 24, 2001 (2001.8.24)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Contents of correction]

[Claims]

14. The inflatable implantable implant according to claim 12, wherein the expansion degree and the expansion portion of the hollow body change along the shape of the parabola or the inner surface of the nut receiving portion.

[Procedure amendment]

[Submission date] April 14, 2003 (2003.14.14)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Contents of correction]

[Figure 1]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Contents of correction]

[Figure 8]

─────────────────────────────────────────────────── ─── [Continued summary] The cross-sectional profile of the inner wall of the Moves from the upper part of the nut receiving part to the lower part of the nut receiving part. After moving to the position, the fixture body It is formed so that it is pushed by and begins to expand in the outward direction. And are characterized.

Claims (14)

[Claims] 1. An implant comprising a fixture that is inserted and fixed in a tooth extraction hole and an abutment that is coupled to an upper portion of the fixture, wherein the fixture has a plurality of screws projecting circumferentially on an outer surface thereof. The crests are repeatedly formed in the longitudinal direction, the through holes are formed to extend from the upper stage to the lower stage, and the locking protrusion having the screw passage hole formed at the center is integrally projected with the inner wall at a predetermined position from the upper stage. And an upper abutment receiving part and a lower nut receiving part, and the lower part is opened to form at least one slot from the lower part to the first position. The threaded body is extended to the lower stage of the nut receiving portion through the screw through hole by being locked to the stop projection and positioned in the abutment receiving portion. A screw; and a nut that is screwed with the main body of the screw and moves up and down in the nut receiving portion by rotation of the screw, wherein a cross-sectional profile of an inner wall of the nut receiving portion is such that the nut is of the nut receiving portion. An expandable implant that can be immediately fixed, characterized in that the fixture body is formed to be expanded outward by being pushed by the nut after moving from the upper part to the lower position to the first position. 2. A nut main body having a threaded through hole formed in an inner wall thereof from an upper stage to a lower stage, the nut main body having various planar shapes corresponding to the tooth extraction hole, and a nut protruding outward in a radial direction at an upper stage of the main body. And a guide protrusion that is fitted into the slot, wherein a side surface profile of the nut body corresponds to a profile of an inner wall from an upper portion of the nut receiving portion to a first position. Inflatable implant that can be fixed immediately. 3. An annular projection is formed on a surface of the locking projection on the side of the abutment receiving portion, and an annular groove is formed in a head of the screw facing the annular projection, the annular projection being the annular groove. The inflatable implant according to claim 1, wherein the inflatable implant can be inserted into the. 4. The inflatable implantable implant according to claim 1, wherein the fixture further includes a cap coupled to a lower portion of the fixture body. 5. The cap has a hemispherical shape, and a screw receiving groove for receiving a lower step of the screw is formed at a center of the cap, and a screw for connecting to a lower step of the fixture body is formed inside an upper part of the cap. The expandable implant according to claim 4, which can be immediately fixed. 6. The neck according to claim 1, wherein a neck is integrally formed on an upper portion of the fixture body, and a screw is formed on an inner surface of the neck to be screwed with the abutment. Inflatable implant that can be fixed. 7. The expandable implant according to claim 6, wherein the abutment is linear. 8. The abutment is prismatic in shape.
The inflatable implant which can be immediately fixed as described in. 9. The expandable implant according to claim 1, wherein an abutment is integrally formed on the upper stage of the fixture. 10. The inflatable implantable implant according to claim 9, wherein a screw is formed on an inner surface of the abutment, and a cover is screwed to the abutment. 11. A guide in which at least two slots are formed, the thickness of the fixture body separated by the slots is different, and a thick portion of the fixture body is inserted into the nut in a longitudinal direction. The immediate-fixable expandable implant according to claim 1, wherein a groove is formed. 12. An implant comprising a fixture inserted into and fixed to a tooth extraction hole, and an abutment joined to an upper portion of the fixture, wherein the fixture has a plurality of screws projecting circumferentially on an outer surface thereof. The crests are repeatedly formed in the longitudinal direction, the through holes are formed to extend from the upper stage to the lower stage, and the locking protrusion having the screw passage hole formed at the center is integrally projected with the inner wall at a predetermined position from the upper stage. And an upper abutment receiving part and a lower nut receiving part, and the lower part is opened to form at least one slot from the lower part to the first position. Positioned in the abutment receiving part by being locked by the stopper projection, the threaded screw body is inserted into the lower part of the nut receiving part through the screw through hole. A screw to be extended; a threaded through hole is formed on an inner wall from an upper step to a lower step, and a nut body having various planar shapes corresponding to the tooth extraction hole; and an upper step of the body projecting radially outward A guide protrusion that is formed and fitted into the slot, the nut body includes a nut that is screwed with the screw body and moves up and down by rotation of the screw, and a cross-sectional profile of an inner wall of the nut receiving portion is After the nut moves to the first position, the side profile of the nut body corresponds to the profile of the inner wall from the upper part of the nut receiving part to the first position, which is a parabolic shape having the first position as an apex. An inflatable type infixable structure, wherein the fixture is formed so as to be pushed by the nut and start to expand outwardly. plant. 13. The fixture further includes a cap coupled to a lower portion of the fixture body, the cap having a hemispherical shape, a screw receiving groove for receiving a lower portion of the screw formed at a center thereof, and an upper inner portion of the cap. The immediate expandable implant according to claim 12, wherein a screw is formed to connect with a lower portion of the fixture body. 14. The implantable implant according to claim 12, wherein a degree of expansion and an expanded portion of the fixture body are changed depending on a shape of the parabola or a side profile of the nut body.