KR101216303B1 - Implant Fixture - Google Patents

Abstract

The present invention is to improve the body and screw surface structure of the polygonal fixture to be implanted in the alveolar bone during implant fixture treatment to perform a smooth implantation process during implantation and to improve the initial fixation force to fix the fixture to the alveolar bone in the form to be able to resist the immediate load In the beginning, the structure of the screw surface and polygonal thread above the polygonal surface of the screw surface provide a fastening force with the alveolar bone so that there is no loosening due to the rotation of the fixture or reverse rotation during excessive chewing after bone fusion. Chin) relates to an implant fixture having an improved polygonal embedding configuration by forming a conical column with wings.
To this end, the present invention, the body is a polygon (polygon) form, starting with an equilateral triangle, such as square, pentagon, regular hexagon, regular hexagon, regular octagon, etc. Various polygonal (polygon) fixtures to be fused more stably and firmly after implantation Form.
In addition, the polygon is divided into straight (straight) and twisted (twisted) form, each corner of the polygon is composed of a curved and unprocessed type, and the cutting edge is formed on the polygon edge or not Both forms are angled at the corners to allow smooth insertion when placed in the groove, and conical jaws (wings) are formed on the cylinders above the fixture to rotate the fixtures. An initial fixation is formed with pressure on the top and configured to reduce loosening and reverse rotation of the fixture after implantation.

Description

       Implant Fixtures with Polygonal Fences

The present invention relates to an implant fixture having a polygonal recessed configuration in which threads are formed in various types of bodies.

In detail, the present invention enables to perform a more smooth manner of fastening the alveolar bone, and to provide a fast bond to the alveolar bone to have a more stable stable state according to the instantaneous immediate load after the initial fastening, and with a bone fusion It relates to an implant fixture having a buried configuration made by improving the structure of the thread portion and the screw surface.

In the case of a missing tooth, a bridge was used in which a denture was inserted or a surrounding portion of a tooth was used as a column and a missing portion was covered with a metal or the like. However, such a procedure has a number of problems, such as a false teeth or bridges artificial teeth chewing food and adversely affects the surrounding teeth.

As a result, an implant procedure has emerged as a procedure of advanced dental care. Such implantation is to form an artificial tooth root in the alveolar bone, by using the combined artificial teeth made similar to the actual teeth using the tooth to obtain the effect of using the actual tooth.

The implantation process is to form a groove groove by using a tool such as a drill in order to implant a fixture in the alveolar bone missing teeth, and after the fixture is buried in the groove groove to combine the abutment (abutment) to the fixture The implant procedure is completed by combining artificial teeth with the abutment.

The fixture embedded in the alveolar bone during the implant procedure as described above performs the root function of the tooth, the abutment (abutment tooth) is a connection configuration to integrate the artificial tooth and the fixture.

The fixture and abutment (butt tooth) is an implant structure for firmly fixing the artificial tooth in place, such implant structure is mainly made of a metal material such as titanium excellent physical / chemical rigidity.

On the other hand, until the fixture is firmly seated in the alveolar bone, the gingival is again covered for several months with the fixture embedded (submerged type) or the outside of the exposed fixture is closed by a cover screw ( Exposure type), when the fixture is fully seated, the abutment that can cut the gingival or remove the cover screw and form the artificial tooth, that is, abutment is placed in the fixture and covered with a prosthesis.

The alveolar bone of the human body in the implant procedure as described above consists of the outer cortical bone and the reticular bone of the inner side, so that the weak cortical bone of the inner side is protected by the hard cortical bone of the outer side, so that the screw part of the outer surface corresponds to the fixture At the point in contact with the more dense pitch and the outer diameter of the fixture itself is formed to be expanded to ensure a stable and firmly embedded.

However, such a fixture is composed of plain (ordinary) threads, which are weak in fixation force, and in the case of incomplete bone fusion or excessive chewing pressure even after bone fusion even after considerable time after implantation is completed, There was a problem that the screw part of the fixture was loosened from the alveolar bone and had to be retreated during chewing.

The present invention has been invented to solve the above problems.

Thus, implant-only fixtures have been required.

The present invention, the outer structure of the polygonal body and the screw after the bone fusion formed a structure that has a high buoyant coupling force with the alveolar bone is a structure that does not rotate even if severe chewing pressure is applied to the alveolar bone more stable and solid implant Its purpose is to provide a fixture.

Still another object of the present invention is to provide an implant fixture that has a stable and solid implantation state by adding a configuration for firmly closing the implantation groove opening of the alveolar bone, and when the bone fusion between the alveolar bone and the fixture is finished, the implant fixture It is another purpose to provide a firm fixation force by being almost integrated with the alveolar bone.

In order to achieve the above object, the present invention has the following configuration.

The present invention, the fixture body is a polygonal shape of the screw portion is formed of a double or more screw structure starting from both sides of the lower end of the outer surface, formed of a conical jaw (wing) 80 on the threaded portion 20, to be embedded in the recess In the implant fixture, the outer surface of the body is of two simple straight (straight), shaped and twisted (twisted) fixtures, the corners being circular itself, and the curved edges, It has two shapes and consists of a cutting edge formed from the center of the edge to the right, and no cutting edge.The absence of a cutting edge is similar to that of the cutting groove as the cutting edge is formed by the thread formed at the polygonal edge. When placed, it is configured to minimize frictional resistance and to smoothly sell.

The body of the fixture is a polygonal form of an equilateral triangle, square, regular pentagon, regular hexagon, regular hexagon, regular octagonal form, etc. It is possible to reduce the reverse rotation from excessive chewing pressure and prevent the fall of implant fixture due to loosening.

The submerged type fixture has a conical shape under the cylinder of about 1mm thick, and has a slightly larger diameter than the lower polygonal screw, forming a jaw (wing). It is formed to enhance the fixation and to prevent the invasion of bacteria, and the polygonal fixture that enhances the initial fixation force of another form has no big jaw (wing) in the upper part, so that the abutment is seated instead of the winged fixture. Consists of concave and convex shape and forms a wing larger than the fixture diameter in the lower part of the abutment. When the abutment wing and the fixture are combined, the wing is caught on the alveolar bone. When the fixing screw is tightened, the fixture is firmly tightened. It is configured to resist load.

In addition, even without immediate loading (loading), after fixing the fixture, the cover screw or healing cap, which has a wing with a diameter larger than the diameter of the fixture, can be buried for several months, and the initial fixation force of the fixture is increased to increase the failure rate. Can be reduced.

In the case of exposed type fixtures, by adjusting the thickness of the cylinder on the cone above the thread of the fixture, the top of the cylinder is exposed to the gingival side, and the bottom of the cone forms a jaw (wing) somewhat larger in diameter than the polygonal thread diameter. At the time of implantation, the conical jaw above the fixture with a large diameter hangs on the top of the alveolar bone and is tightly tightened and does not go down any further.

The conical jaw (wing) is formed with a wedge-shaped functional projection that reduces reverse rotation.

The overall appearance of the implant fixture is tapered downward and is designed to resist chewing pressure.

The fixture consists of a conical or semi-circular seating groove in the upper part of the fixture, a hexagonal groove or an octagonal groove, and a fixture having a screw groove for fixing the abutment downward.

As described above, according to the present invention, after the polygonal body is implanted by the configuration of the screw surface and the screw portion, the fixture can be more firmly fixed to the alveolar bone. If the case is reduced, there is an effect that can maintain a more stable and firm fixing force in the alveolar bone. Threads with ketting edges are formed at the corners of the polygons to reduce frictional heat when placing implant fixtures in the recess, and conical jaws (wings) with wedge-shaped protrusions are formed on the upper part of the fixture threads. It is possible to reinforce the initial fixation by reducing the reverse rotation, so that the prosthesis can be raised as soon as possible, and the patient who has undergone the implant procedure can feel a high satisfaction with the procedure.

The present invention has a polygonal shape that is more firmly fixed as time passes after bone fusion, and has an excellent counter force according to mastication load, and after alveolar bone fusion, the implant is almost integrated with the alveolar bone, that is, a fixed state as it is stenosis. It has a very reliable effect.

1 is a front view illustrating a polygonal implant fixture according to the present invention.
Figure 2 is a front view of the linear shape of the polygonal implant fixture body according to the present invention.
3 is a front view illustrating a twisted shape of a polygonal implant fixture body according to the present invention.
Figure 4 is a plan view of the corner surface of the polygonal implant fixture body according to the present invention.
Figure 5 is an enlarged view of the cutting edge of the corner surface of the polygonal implant fixture according to the present invention.
6 is a plan view of a polygonal implant fixture whose shape is slightly changed depending on the height position to form a cutting edge of the polygonal implant fixture corner surface according to the present invention.
7 is a plan view of a polygonal equilateral triangle shaped implant fixture according to the present invention;
8 is a plan view of a polygonal square type implant fixture according to the present invention;
9 is a plan view of a polygon pentagon-shaped implant fixture according to the present invention;
10 is a plan view of a polygonal regular hexagon shape implant fixture according to the present invention.
11 is a plan view of a polygonal square shape implant fixture according to the present invention;
12 is a plan view of a polygon corrected octagonal implant fixture according to the present invention;
Figure 13 is an enlarged view of the function projection of the polygonal implant fixture conical jaw according to the present invention.
14 is a view illustrating a state of use of the polygonal implant fixture according to the present invention.
Figure 15 is a front view showing another embodiment of the present invention.
16 is a front view illustrating another embodiment of the present invention.
17 is a front view showing another embodiment of the present invention.
18 is an enlarged front view of the wing healing cap of the present invention.

Embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 is a front view illustrating a polygonal implant fixture according to the present invention.

2 and 3 are exemplary views showing the outer surface of the polygonal implant fixture according to the present invention.

Figure 4 is a plan view of the corner surface of the polygonal implant fixture body according to the present invention.

5 is an enlarged view of a cutting edge of a polygonal implant fixture corner surface portion according to the present invention;

6 is a plan view of a polygonal implant fixture whose shape is slightly changed depending on the height position to form a cutting edge of the polygonal implant fixture corner surface according to the present invention.

7, 8, 9, 10, 11, and 12 are plan views according to types of polygonal implant fixtures according to the present invention;

13 and 5 are enlarged views of main portions of a polygonal implant fixture according to the present invention;

14 is an exemplary view illustrating a state of use of a polygonal implant fixture according to the present invention.

15, 16, 17 is a front view showing another embodiment of the present invention.

18 is a front view of the wing healing cap of the present invention.

Referring to the drawings, the polygonal implant fixture according to the present invention is a polygonal body 10, the curved surface 60 of the threaded portion 20, the threaded portion 20 formed on the outer surface of the body 10, the treated edge 50, and It is formed of a conical jaw (wing) 80 on the threaded portion 20. As such, it is well known that the fixture of the configuration is manufactured in a bolt-like shape as a whole.

Such a polygon (polygon) implant fixture is a variety of polygonal body 10, such as the equilateral triangle of Figure 7, the square of Figure 8, the pentagon of Figure 9, the regular hexagon of Figure 10, the regular hexagon of Figure 11, etc. The straight (straight type) 30 and the twisted (twisted type) 40, and the shape of the polygonal body of the corner (50), and the curved corner 60 form.

The curved shape 60 of the corner of the polygonal implant fixture is formed compared to the narrowing width of the alveolar bone where the corner portion is to be implanted, so if the alveolar narrowing width is narrow, a fixture having a curved surface for reducing the diameter is used, and the alveolar narrowing width is sufficient. If the edge of the polygon implant fixture 50 is a living fixture can be used.

The straight (straight type) 30 has a curved surface 60 and a cutting edge 70 formed at the corners as shown in FIG. 2, or a corner at which the threaded portion 20 is formed at the corner 50. (50) In its own shape (because it also acts as a cutting edge), when placed in the alveolar bone groove, all three are less resistant to the alveolar bone and are configured to allow for smooth placement.

Twisted (twisted) 40 shape Also, as shown in Fig. 3, each face of the polygon is bent from the upper side to the lower position of the front side (to the right). In the form of the edge 70 or the shape of the edge 50 in which the threaded portion 20 is formed at the edge 50 (since it also serves as a cutting edge itself), the three are placed in the alveolar bone recess groove. , The lower threaded portion 20 is first tapped (cutting) and (screwed length is formed), so that it receives less alveolar bone friction resistance and is configured to allow smooth placement.

 In addition, the edge 50 is formed of a cutting edge 70 and not formed, the cutting edge 70 is the shape of the corner 50 itself and the shape of the curved corner 60, as shown in Figure 4 As shown in FIG. 6, the shape may be slightly changed depending on the height of the ketting edge 70, and the alveolar bone groove is cut in the rotational direction during implantation, thereby reducing frictional heat and reducing frictional heat. It can be configured to make a smooth placement.

7, the outer triangular polygonal implant fixture body 10, the outer surface of each corner 50, as shown in Figure 4 treated with a curved surface 60, as shown in Figure 5 to form a cutting edge 70 on the right of the center of the corner, By forming a circle inscribed on the surface of the polygonal implant fixture body 10 to form a threaded portion 20 at the outer edge 50 of the inner circle, the thread is formed locally at each corner 50 to reduce the heat of friction during rotational installation. It can be placed smoothly, and the body portion in contact with the inner circle is formed so that the pitch of the screw is located so that it is almost matched with the edge of the recess groove can be settled stable and firm fixing.

 Conical jaw (wing) 80 is formed on the upper part (head) of the threaded part 20, which is the threaded part 20 of the edge 60 which curved the polygonal body 10 as shown in FIG. 4. The tapered wing (jaw) 80 is formed in the upper portion, and the three or more wedge-shaped functional protrusion 90 to reduce the loosening of the fixture is formed as shown in Figure 13, the polygon implant fixture body It is formed to be tapered from the top to the bottom so that the front surface can resist the mastication pressure.

At this time, the wedge-shaped functional projection 90 of FIG. 13 is formed in three or more numbers at equal intervals at three or more radial points below the tapered wing (jaw) 80 on the threaded portion 20, and fixtures are embedded. When the direction of rotation is right when the wedge-shaped configuration having an upward slope from right to left.

That is, the wedge-shaped functional protrusion 90 of FIG. 13 rotates the body so that it is smoothly inserted into the front side when inserted into the alveolar bone, and in the reverse rotation, the rear end is raised as a needle of the fishing needle. It is designed to reduce the reverse rotation due to the initial unloading by performing the hook function.

After fixing the fixture to the alveolar bone, the gingival is covered for several months while the fixture is embedded (submerged type) or the outside of the exposed fixture is closed by the wing cover screw 100. (Exposure type), when the fixture is fully seated, the gingival is removed or again the wing cover screw 100 is removed and the abutment that raises the artificial tooth, that is, the wing abutment 120 is placed in the fixture and covered with a prosthesis. .

 At this time, the wing cover screw 100 is applied to both the internal and the external fixture of the submerged type and the exposed fixture during the procedure.

That is, after fixing the wing cover screw 100 completely covered the gingival, and after the alveolar bone is restored to restore the gingival again, remove the wing cover screw 100 by secondary surgery and instead of the winger wing is formed After installing the butt (buttock) 120, the prosthesis is generated to complete the surgery.

That is, in the present invention, if the wing cover screw 100 is applied after the fixture body 10 is embedded, the submerged type can be performed, and if the wing abutment 120 is applied instead of the wing cover screw 100. The exposure type can be combined. Therefore, in the above embodiment, only the wing cover screw 100 is shown as an embodiment, and the treatment may be performed by applying the wing healing cap 110 and the wing abutment (abutment) 120.

The shape and role of the jaw (wing) 80 is applied to all polygon (polygon) implant fixtures, the wing cover screw 100, the wing healing cap 110, the wing abutment 120, and also the same polygon Since it is configured to apply to all of the (polygon) implant fixtures, the repeated description replaces the above description as it also applies to the polygonal implant fixtures described further below.

The outer surface of the square polygonal implant fixture 10 of FIG. 8 processes each corner 50 as shown in FIG. 4, and a cutting edge 70 as shown in FIG. 5 at the right side of the center of the processed corner 50. Form a circle inscribed on the surface of the polygonal implant fixture body 10 to form a threaded portion 20 at the outer edge 50 of the inner circle so that the screw thread is formed at each corner 50 to rotate. The frictional heat can be reduced and smoothly placed, and the body part in contact with the inner circle is formed so that the bottom face of the pitch of the screw is positioned so that it is almost matched with the rim of the groove, so that it can be stable and firmly fixed.

 A jaw (wing) 80 is formed on the upper part (head) of the screw part, and the tooth part (jaw) 80 has a threaded part (not shown) of the edge part 60 of which the edge 50 of the polygonal body 10 is curved as shown in FIG. 20) The tapered wing (jaw) (80) below the radially three or more points three or more at equal intervals are formed in the wedge-shaped functional projection 90 as shown in Figure 13, rotated when the fixture is buried Since the direction is right, it is a wedge-shaped configuration with an upward slope from right to left.

Polygon implant fixture body 10 is formed to be tapered from the top to the bottom is configured so that the front surface can resist chewing pressure.

In the polygonal pentagonal implant fixture of FIG. 9, the outer surface of the body 10 may process each corner 50 as shown in FIG. 4, or not, or cut the right side of the center of each corner 50 as shown in FIG. 5. An edge 70 is formed, a circle inscribed to the surface of the polyhedral implant fixture 10 is formed, and a thread 20 is formed at the outer edge 50 of the inner circle so that the thread is localized at each edge 50. It can reduce the heat of friction during rotational installation, so it can be placed smoothly.Because the body part contacting the inner circle is formed with the bottom of the pitch of the screw located, it is almost matched with the edge of the groove, so it is stable and firmly fixed. can do.

 The upper part (head) of the screw portion 20 is formed with a jaw (wing) 80, the teeth (jaw) 80 is a corner 60, the curved surface of the polygonal body 10, 50 as shown in Figure 4 The tapered wing (jaw) 80 on the threaded portion 20 of the radially three or more points at equal intervals are formed with a wedge-shaped functional projection 90 as shown in Figure 13 of three or more numbers, and fixtures When the direction of rotation is right when the wedge-shaped configuration having an upward slope from right to left.

Polygon implant fixture body 10 is formed to be tapered from the top to the bottom is configured so that the front surface can resist chewing pressure.

The regular hexagonal polygonal implant fixture of FIG. 10 has the outer surface of the body 10 treated with a corner 60 as shown in FIG. 4 or not, or a cutting edge as shown in FIG. 5 at the right side of the center of the other corner 50. 70) and a circle inscribed to the surface of the polygonal implant fixture body 10 to form a thread 20 only at the outer edge 50 of the inner circle so that the thread is formed locally at each corner 50. It is possible to reduce the frictional heat during rotational installation, so it can be placed smoothly. Since the bottom part of the pitch of the screw is formed so that the bottom of the body 10 is in contact with the inner circle, it is almost confronted with the edge of the recess and is secured. can do.

 The upper part (head) of the screw portion 20 is formed with a jaw (wing) 80, the teeth (jaw) 80 is a corner 60, the curved surface of the polygonal body 10, 50 as shown in Figure 4 The tapered wing (jaw) 80 on the threaded portion 20 of the radially three or more points at equal intervals are formed with a wedge-shaped functional projection 90 as shown in Figure 13 of three or more numbers, and fixtures When the direction of rotation is right when the wedge-shaped configuration having an upward slope from right to left.

Polygon implant fixture body 10 is formed to be tapered from the top to the bottom is configured so that the front surface can resist chewing pressure.

The outer surface of the regular polygonal polygonal fixture fixture 10 of FIG. 11 may process the curvature edge 50 as shown in FIG. 4 or not, or the cutting edge 70 as shown in FIG. Forming a circle inscribed on the surface of the polygonal implant fixture body 10 to form a screw portion 20 only at the outer edge 50 of the inner circle so that the screw thread is formed at each corner 50 to rotate. The frictional heat can be reduced and smoothly placed, and the body 10 part in contact with the inner circle is formed so that the bottom of the pitch of the screw is positioned so that it is almost matched with the rim of the groove, so that it can be stable and firmly fixed. have.

 The upper part (head) of the screw portion 20 is formed with a jaw (wing) 80, the teeth (jaw) 80 is a corner 60, the curved surface of the polygonal body 10, 50 as shown in Figure 4 The tapered wing (jaw) 80 on the threaded portion 20 of the radially three or more points at equal intervals are formed with a wedge-shaped functional projection 90 as shown in Figure 13 of three or more numbers, and fixtures When the direction of rotation is right when the wedge-shaped configuration having an upward slope from right to left.

Polygon implant fixture body 10 is formed to be tapered from the top to the bottom is configured so that the front surface can resist chewing pressure.

The outer octagonal polygonal implant fixture body 10 of FIG. 12 may be treated with a curved surface 60 as shown in FIG. 4 or not as shown in FIG. 4, or a cutting edge as shown in FIG. 5 at the right side of the center of the spaced corner 50. 70) and a circle inscribed to the face of the polyhedral implant fixture body 10 to form a thread 20 only at the outer edge 50 of the inner circle so that the thread is formed locally at each corner 50. It is possible to reduce the frictional heat during rotational installation, so it can be placed smoothly. Since the bottom part of the pitch of the screw is formed so that the bottom of the body 10 is in contact with the inner circle, it is almost confronted with the edge of the recess and is secured. can do.

The upper part (head) of the screw portion 20 is formed with a jaw (wing) 80, the teeth (jaw) 80 is a corner 60, the curved surface of the polygonal body 10, 50 as shown in Figure 4 The tapered wing (jaw) 80 on the threaded portion 20 of the radially three or more points at equal intervals are formed with a wedge-shaped functional projection 90 as shown in Figure 13 of three or more numbers, and fixtures When the direction of rotation is right when the wedge-shaped configuration having an upward slope from right to left.

Polygon implant fixture body 10 is formed to be tapered from the top to the bottom is configured so that the front surface can resist chewing pressure.

The shape without forming the jaw (wing) 80 is replaced by the wing cover screw 100 of FIG. 15 and the wing abutment (abutment) 120 of FIG. 17 instead of the jaw role of the polygonal implant fixture, which is the fixture diameter. Combining the larger wing cover screw 100 and wing abutment (abutment) 120 to the fixture, the larger wing cover screw 100 and wing abutment (abutment) 120 presses the adjustment, When the screw portion 20 compresses the alveolar bone and initially fixes the fixture, and can withstand the instant load with the initial fixation, and when the bone fusion and regeneration are started due to the characteristics of the polygonal body 10, as shown in FIG. It is designed to keep the prosthesis up and running quickly.

At this time, the wing cover screw 100 is applied to both the internal and the external fixture of the submerged type and the exposed fixture during the procedure.

That is, in the case of using the wing cover screw 100, after fixing the wing cover screw 100 completely covered the gingival, after the restoration of the alveolar bone re-opening the gingival again, the wing cover screw 100 by secondary surgery If the gingival is healed, remove the healing cap, install the abutment (abutment), and create a prosthesis to complete the operation.

In the case of using the wing healing cap 110 shown in FIG. 15 after implanting the polygonal implant fixture, the wing healing cap 110 is fixed, and the upper portion of the wing healing cap 110 is exposed to seal the gingiva so that the gingival is healthy, the wing healing cap ( 110) and repair the prosthesis, usually by combining abutments.

Another implementation was to raise the abutment without the need to cut the gingival hex grooves and fixing screw grooves are formed therein so that the abutment is seated inside the wing healing cap 110.

When the wing abutment 120 of FIG. 16 is used, the wing abutment 120 may be raised to cover a temporary prosthesis.

That is, it can be configured to receive immediate loading.

In the upper part of the fixture, the abutment is settled, and conical or semicircular seating grooves for correct coupling and octagonal grooves and screw grooves are formed to fix the abutment to prevent impurities and bacterial invasion. do.

In the above-described embodiments of the present invention, only one preferred embodiment of the present invention has been described, and the technical scope of the present invention is not limited.

In addition, the present invention is not limited to dental implant fixtures, but may be applied to implant fixtures used in orthopedic surgery, and various modifications may be possible within the technical spirit, and it is natural that such modifications fall within the scope of the present invention. I will say.

10: body 20: screw part
30: straight (straight) 40: twisted (twist)
50: corner 60: curved edge
70: cutting edge 80: conical jaw (wing)
90: function projection 100a: general cover screw
100b: wing cover screw 110a: normal healing cap
110b: wing healing cap 120a: general abutment
120b: wing abutment 130a: conical groove
130b: semicircular groove 140: hexagonal groove
150: set screw groove

Claims (10)

A polygonal body having a polygonal shape, each corner being curved and twisted in one direction to be twisted; And
And a screw part 20 formed on the outer circumferential surface of the body 10 by rotating in one direction from a lower end of the body 10 to a predetermined height.
The upper portion of the body 10 is not formed with the threaded portion 20, characterized in that the conical jaw 80 is formed that the length of the circumference is increased toward the upper side,
The body 10 is characterized in that the inner groove is formed on the upper side is formed with a seating groove for seating the abutment,
The curved edge 60 has a cutting edge 70 formed by cutting toward the other direction opposite to the one direction in which the screw portion 20 is formed, with the center of the curved edge 60 as the center. Polygonal implant fixture. delete delete delete delete delete delete delete delete delete

Images