KR20190136480A - Dental implant - Google Patents

Abstract

Disclosed is a dental implant, which comprises: a fixture; an abutment including an insertion part inserted into a fastening groove of the fixture, a protrusion part protruding to an upper side of the fixture, a through-hole passing through the insertion part and the protrusion part, and a plurality of cutout holes spaced apart from each other in a circumferential direction to allow the protrusion part to be expanded to the outside by external force by a predetermined distance or more; an artificial tooth coupled to the protrusion part in a manner of surrounding the outside of the protrusion part of the abutment; and a fixing screw inserted into the through-hole, and having an end coupled to the fixture to fix the abutment with respect to the fixture. When the fixing screw is coupled, the protrusion part of the abutment is expanded to the outside by a predetermined distance or more, and the artificial tooth is forcibly press-fitted into the expanded protrusion part to be coupled thereto. An outer surface of the protrusion part is further expanded to the outside through an inclined surface provided on an inner surface of the protrusion part of the abutment and an inclined surface provided on an outer surface of a head part of the fixing screw to increase a cross-sectional area. Also, an inclined surface is provided on an inner surface of an insertion hole of the artificial tooth to allow the outer surface of the protrusion part and the inner surface of the insertion hole to be closely attached. Therefore, an outer diameter of the abutment can be relatively further extended as compared to that of an initial state before a procedure when the artificial tooth and the abutment are coupled to each other, thereby greatly increasing coupling force between the artificial tooth and the abutment after the procedure compared to that of the conventional art.

Description

Dental Implants {DENTAL IMPLANT}

The present invention relates to a dental implant, and more particularly to a dental implant that is coupled through a forced indentation method, rather than bonding using an adhesive when bonding the artificial tooth to the abutment.

Implants are artificial teeth that are implanted into the alveolar bone when the teeth are lost or lost. Implantation is a trend that can be performed only on the lost or lost tooth without damaging the teeth adjacent to the lost or lost tooth. In general, the implant is composed of a fixture placed in the alveolar bone, an abutment fixed to the fixture by a screw, and an artificial tooth (crown) covered on the abutment to form the implant.

Among the components of the implant, the abutment transmits the load applied through the artificial tooth to the artificial tooth, that is, the load to the jawbone. To do this, the size, shape and The contours should be taken into account and in addition to reflecting the occlusal and peripheral teeth (upper or lower teeth), the condition of the gums and the gum line.

Therefore, the abutment is customized through the computer aided design (CAD) or the computer aided manufacturing (CAM) system in consideration of the individual characteristics of the patient.

On the other hand, until recently, the abutment usually relies on the bonding process using an adhesive in integrating with artificial teeth, and thus, has a fatal problem that it is impossible to remove / separate when post-correction is required.

In other words, after implanting the artificial teeth, it is inspected whether or not the angle, shape, and height of the other teeth are appropriate. According to the result of the inspection, the necessity of correction of the artificial teeth is determined. Although it is necessary to separate the abutment, it is impossible to separate due to bonding. In order to supplement this, Patent Document 1 is disclosed. Patent Literature 1 discloses that the coupling portion is configured with an outer diameter formed by expanding the 001 to 01% relative to the inside diameter of the inlet hole of the upper prosthesis. When the user of the implant is used for a long time, there is a problem that the bonding force between the coupling portion and the prosthesis may be weakened.

Republic of Korea Patent Publication No. 10-1768410 (2017.08.08 registration)

The present invention has been made to solve the above-mentioned conventional problems, by adopting a structure that can expand the outer diameter of the abutment relatively more than the initial state before the procedure when the artificial tooth and the abutment are mutually coupled It is an object of the present invention to provide a dental implant that can increase the bonding force between the artificial tooth and the abutment after the procedure compared to the conventional.

According to one aspect of the invention, the fixture is placed in the gum bone; Comprising an insertion portion inserted into the fastening groove of the fixture and a protrusion projecting to the upper portion of the fixture is provided with a through hole penetrating through the insertion portion and the protrusion is provided in the circumferential direction so that the protrusion can be extended to a predetermined or more by an external force Abutment is provided with a plurality of incision holes spaced apart from each other along; An artificial tooth coupled to the protrusion in such a manner as to surround the outside of the protrusion of the abutment; And a fixing screw inserted into the through hole and having one end coupled to the fixture to fix the abutment with respect to the fixture, wherein the protrusion of the abutment extends more than a predetermined time when the fixing screw is coupled to the fixture. The artificial teeth are forcibly pressed into the extended protrusions to provide a dental implant that can be coupled.

The through hole may include a first through hole provided at a position corresponding to the insertion portion and a second through hole provided at a position corresponding to the protrusion portion, and the inner surface of the second through hole may be continuous along the circumferential direction thereof. A first inclined surface is provided, and a second inclined surface is continuously provided along the circumferential direction of the head portion of the fixed screw so as to be in surface contact with the first inclined surface, and the inclined angle of the second inclined surface is the first inclined surface. It is preferable that it is larger than the inclination angle of.

The artificial tooth is provided with an insertion hole so that the protrusion of the abutment is insertable, and an inner surface of the insertion hole is continuously provided with a third inclined surface along the circumferential direction, and the third inclined surface is inclined downward toward the protrusion. Can be prepared.

It is preferable that the inclination angle of the third inclined surface is equal to or less than the inclination angle of the outer surface of the protrusion in a state in which the protrusion is extended outward by engagement of the fixing screw.

A tapered surface tapered along a circumferential direction may be provided at an inlet of the insertion hole into which the protrusion is inserted.

The protrusion and the artificial tooth may further include an anti-rotation part for preventing rotation of the artificial tooth in a state where the artificial tooth is coupled to the protrusion.

The anti-rotation part, the first anti-rotation surface provided on at least one of the outer surface of the protrusion; And a second anti-rotation surface provided on at least one inner surface of the insertion hole of the artificial tooth so as to be in surface contact with the first anti-rotation surface.

It may further include an auxiliary expansion screw inserted into the protrusion extended by the coupling of the fixing screw to close the extended protrusion to the inner surface of the insertion hole of the artificial tooth.

A screw thread may be provided on an inner circumferential surface of the protrusion, and another screw thread may be provided on an outer surface of the auxiliary extension screw to be screwable to the screw thread.

The cross-sectional area of the auxiliary extension screw may be provided to gradually decrease from one end to the other end.

According to the dental implant of the present invention described above, through the inclined surface provided on the inner surface of the protrusion of the abutment, the inclined surface provided on the outer surface of the head portion of the fixing screw to further extend the outer surface of the protrusion to increase the cross-sectional area and the insertion hole of the artificial tooth Similarly, the inner surface of the abutment and the insertion hole are in close contact with each other so that the outer diameter of the abutment can be expanded relatively more than the initial state before the procedure. The bonding force between the teeth and the abutments can be significantly increased as compared to the prior art.

In addition, by additionally coupling the auxiliary extension screw inside the protrusion of the abutment, it is possible to integrally connect a plurality of protrusions spaced apart from each other to ensure that the protrusion pieces are expanded to almost the same shape as well as to maintain the overall firm bonding force. Accordingly, it is possible to maintain substantially uniform contact along the circumferential direction of the inner surface of the insertion hole of the artificial tooth.

In addition, it is possible to further stably maintain a close contact state between the outer surface of the protrusion and the inner surface of the insertion hole of the artificial tooth by further expanding (opening) the first extended protrusion through the coupling of the auxiliary extension screw through the coupling of the fixing screw.

In addition, the anti-rotation part is provided on the protrusion and the artificial tooth to prevent the rotation of the artificial tooth in the state where the artificial tooth is coupled to the protrusion to prevent the occurrence of defects due to the rotation of the artificial tooth in the long term use.

1 is a cross-sectional view showing a state in which a dental implant is installed according to an embodiment of the present invention.
2 is an exploded perspective view of a dental implant according to an embodiment of the present invention.
3 is an exploded cross-sectional view of a dental implant according to an embodiment of the present invention.
4 is a view showing a state that a fixing screw is inserted into the abutment in FIG.
5 is a cross-sectional view showing a state in which some components of the dental implant according to the embodiment of the present invention are coupled.
6 is an enlarged view of FIG. 5.
Figure 7 is a cross-sectional view showing a configuration for preventing rotation of the artificial tooth in the dental implant according to an embodiment of the present invention.
8 is a cross-sectional view illustrating another example of FIG. 7.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Like numbers refer to like elements in the figures.

Dental implants according to a preferred embodiment of the present invention, when the artificial teeth and the abutment are mutually coupled to force the artificial teeth against the abutment firmly fixed without using the adhesive coupling using a screw or adhesive By adopting a coupling method capable of shortening the procedure time, the economical efficiency of the procedure can be improved, and the economical efficiency can be increased by reducing the component parts.

Hereinafter, the present invention will be described in detail with reference to Examples.

As shown in FIGS. 1 to 6, the dental implant according to the embodiment of the present invention includes a fixture 100, an abutment 200, an artificial tooth 300, and a fixing screw 400.

First, the fixture 100 is placed in the gum bone (alveolar bone) through a spiral coupling method to serve as a structure supporting the abutment 200 and the artificial tooth 300 as a whole. The fastening groove 110 is provided inside the fixture 100. The fastening groove 110 is provided in the lower region of the first fastening groove 111 and the thread is provided to be screwed to the fixing screw 400 and the upper fastening groove 111 is provided in the fixture ( 100, the second fastening groove 112 made of a polygonal cross-sectional shape such as square, pentagon, hexagon, and octagon to prevent rotation of the abutment 200 when the end of the abutment 200 is inserted into the inside. ).

Next, the abutment 200 is a portion that is coupled to the fixture 100 to firmly support the artificial tooth 300, the insertion portion 210 and the fixture inserted into the fastening groove 110 of the fixture 100. 100 includes a protrusion 220 protruding upward. In addition, a through hole 230 is provided along the longitudinal direction to penetrate the insertion part 210 and the protrusion 220, and the fixing screw 400 is inserted into the through hole 230 and screwed into the fixture 100. By being fixed, the abutment 200 is firmly fixed to the fixture 100.

Meanwhile, in the embodiment of the present invention, when the fixing screw 400 is inserted into the through hole 230 and the abutment 200 is coupled to the fixture 100, the outer surface of the protrusion 220 is in an initial state (fixing screw). Compared to before), it is further extended to the outside, that is, a state that is further spread. As will be described later in the present invention, the abutment 200 and the artificial tooth 300 are coupled to each other using a forced indentation method rather than being coupled to each other using a separate cement adhesive, and the outer surface of the protrusion 220 is expanded as described above. The artificial tooth 300 is forcibly pressed into the protrusion 220 in the opened state to complete the mutual coupling.

1 to 4, the protrusions 220 are provided with a plurality of cutting holes 250 spaced apart from each other along the circumferential direction thereof, and the outer surface of the protrusions 220 is extended through the cutting holes 250. This can be implemented more easily.

On the other hand, the lower portion of the abutment 200 inserted into the fixture 100 preferably has a polygonal shape such as square, hexagon, and octagons to prevent rotation, and the protrusion 220 protruding outward is entirely internal. It may be made into an empty circular shape.

Next, the artificial tooth 300 is coupled to the protrusion 220 in a manner surrounding the outside of the protrusion 220 of the abutment 200 and can be specifically coupled through a forced indentation method, which will be described later.

Next, the fixing screw 400 is inserted into the through hole 230 and one end thereof is coupled to the fixture 100 by screwing, thereby firmly fixing the abutment 200 to the fixture 100. When the fixing screw 400 is completely inserted into the through hole 230 of the abutment 200 and the screw coupling with the fixture 100 is completed, the protrusion 220 of the abutment 200 is fixed by the fixing screw 400. ) Is expanded to the outside and a detailed description thereof will be described later.

According to the present invention, when the fixing screw 400 is completed through the abutment 200 and the coupling to the fixture 100 is completed, the protrusion 220 of the abutment 200 extends outward to a certain level, and the artificial tooth ( 300 is adopted by a method that is forced to be fixed to the expanded protrusion 220 is fixed, and by using a fixed method by force indentation it is not using the conventional screw type or adhesive bonding using an adhesive, shortening the procedure time This can improve the economics of the procedure as well as increase the economics by reducing the components.

Hereinafter, the extension of the protrusion 220 of the abutment 200 and the forced injection of the artificial tooth 300 to the extended protrusion 220 will be described in detail.

1 to 4, the through hole 230 of the abutment 200 includes a first through hole 231 and a protrusion 220 provided at an inner surface position corresponding to the insertion part 210. And a second through hole 232 provided at an inner surface position corresponding to the second through hole 232.

Here, a screw thread is provided on the inner circumferential surface of the first through hole 231, and may be temporarily screwed together with the screw thread of the fixing screw when the fixing screw 400 is fastened.

In the present invention, the first through hole 231 is provided in a straight form along the longitudinal direction of the abutment 200, the second through hole 232 is similarly provided in a straight form along the longitudinal direction in a particular section An inclined surface is provided.

2 to 4, the inner surface of the second through hole 232 may have an outer surface of the head portion of the fixing screw 400 when the abutment 200 and the fixing screw 400 are completed. It includes an inclined surface provided in the contact area.

As shown in FIGS. 3 and 4, the first inclined surface 260 is continuously provided in the inner surface of the second through hole 232 along the circumferential direction thereof, and the first outer surface of the head portion of the fixing screw 400 is provided. The second inclined surface 410 is continuously provided along the circumferential direction thereof so as to be in surface contact with the inclined surface 260.

Here, the inclination angle A2 of the second inclined surface 410 is formed to be greater than or equal to the inclination angle A1 of the first inclined surface 260.

In detail, the inclination angle A2 of the second inclined surface 410 of the head outer surface with respect to the longitudinal center axis of the fixing screw 400 is formed to be approximately 14 to 16 degrees. In addition, the inclination angle A1 of the first inclined surface 260 with respect to the longitudinal central axis of the abutment 200 is formed to be approximately 12 to 13 degrees.

As such, the inclination angle A2 of the second inclined surface 410 is formed to be larger than a predetermined inclination angle A1 of the first inclined surface 260 to fix the screw 400 in the through hole 230 of the abutment 200. When fully inserted into the fixture 100, the outer surface of the protrusion 220 may be extended while being unfolded for a predetermined time, and the cross-sectional expansion may be more easily performed due to the above-described cutting hole 250.

As shown in FIGS. 3 to 6, the artificial tooth 300 is provided with an insertion hole 310 to insert the protrusion 220 of the abutment 200, and the inner surface of the insertion hole 310 is provided. The third inclined surface 320 is continuously provided along the circumferential direction. The cross-sectional shape of the insertion hole 310 has a shape corresponding to the cross-sectional shape of the protrusion 220 of the abutment 200. In the drawing, a hole opened to the outside in communication with the insertion hole 310 means a driver hole, and the inside of the driver hole is filled with a separate filler.

In an embodiment of the present invention, the third inclined surface 320 is provided to be inclined downward toward the protrusion 220 when viewed based on the mutually coupled direction, and the insertion direction of the artificial tooth 300 with respect to the abutment 200 is provided. The third inclined surface 320 is inclined downward toward the entrance of the protrusion 220, that is, the insertion hole 310, based on the central axis.

In the present invention, the inclination angle A3 of the third inclined surface 320 is the same as the inclination angle A4 of the outer surface of the protrusion 220 in the state in which the protrusion 220 is extended outward by the engagement of the fixing screw 400. Less than that.

2 to 4, the inclination angle A4 of the outer surface of the protrusion 220 in the expanded state is the inclination angle A1 of the first inclined surface 260 and the inclination angle A2 of the second inclined surface 410. ) And have no special numerical relationship with them, but have a numerical relationship with the inclination angle A3 of the third inclined surface 320 of the artificial tooth 300 as described above.

In the present invention, the inclination angle (A3) of the third inclined surface 320 is provided below the outer inclination angle (A4) of the protrusion 220 in an expanded state, the operator artificially from the upper side of the abutment 200 toward the lower side When the tooth 300 is inserted, it is possible to firmly couple to the abutment 200 by simply pressing the artificial tooth 300 downward.

Specifically, since the outer diameter of the protrusion 220 in the expanded state has a value greater than or equal to a predetermined diameter larger than the inner diameter of the inlet of the insertion hole 310, the incision hole 250 at the initial insertion of the artificial tooth 300 by the operator. A plurality of protrusion pieces separated through the narrowing (inward) a certain amount to the inside occurs. Subsequently, when the operator presses the artificial tooth 300 further from the upper side, the protrusion 220 may be further inserted into the insertion hole 310, and in the completely inserted state, the outer surface and the third inclined surface 320 of the protrusion 220 may be inserted. Are in close contact with each other.

In addition, during the insertion operation of the artificial tooth 300, the protrusion 220 has elasticity to keep the outer surface thereof in an expanded state, and the third inclined surface 320 in contact with the outer surface of the protrusion 220 is fixed. Therefore, when the operator inserts the artificial tooth 300 at a predetermined depth initially, the artificial tooth 300 may be coupled to the abutment 200 more rapidly by the elastic restoring force of the protrusion 220. .

On the other hand, as shown in Figures 2 to 4, due to the difference in the outer diameter of the inlet diameter of the insertion hole 310 and the protrusion 220 in the expanded state to compensate for the initial insertion of the artificial tooth 300 is not smooth The tapered surface 340 tapered along the circumferential direction at the inlet of the insertion hole 310 into which the protrusion 220 is inserted, so that the operator can easily insert the artificial tooth 300 into the abutment 200 more easily. Is provided. Similarly, it is preferable that an inclined tapered surface is also provided at the end of the protrusion 220 inserted into the artificial tooth 300.

As shown in Figures 1 to 6, the present invention further includes an auxiliary expansion screw 500 that is coupled to the inside of the protrusion 220 extended by the coupling of the fixing screw 400.

As described above, the protrusion 220 is composed of a plurality of protrusions, and when the fixing screw 400 is inserted therein, the plurality of protrusions have a state in which they extend outward. The present invention, the auxiliary expansion screw 500 to maintain the outer expansion of the protrusion pieces more stably to have a state that the outer surface of the extended protrusion 220 is more in close contact with the inner surface of the insertion hole 310 of the artificial tooth (300). Is added. As such, by improving the adhesion between the outer surface of the protrusion 220 and the inner surface of the insertion hole 310, the coupling force of the artificial tooth 300 to the abutment 200 may be increased.

In detail, a first thread 510 is provided on an inner circumferential surface of the protrusion 220, and a second thread 520 is provided on an outer surface of the auxiliary extension screw 500 so as to be screwable to the first thread 510. That is, the protrusion 220 and the auxiliary extension screw 500 including a plurality of protrusion pieces are coupled to each other by a screwing method, and the auxiliary extension screw 500 integrates four protrusion pieces spaced apart from each other, for example. The four protrusion pieces can have almost the same shape and maintain a firm coupling force. That is, the four protrusion pieces may be maintained in the same state (angle, length, etc.) in an approximately extended state to each other, and thus substantially uniform along the circumferential direction of the inner surface of the insertion hole 310 of the artificial tooth 300. It can keep a contact.

2 to 4, in the present invention, the cross-sectional area of the auxiliary extension screw 500 gradually decreases from one end (relative to the artificial tooth) to the other end (relative to the artificial tooth). Prepared. Accordingly, the protrusion 220 that is primarily extended through the coupling of the fixing screw 400 is further expanded (opened) through the coupling of the auxiliary extension screw 500 to insert the outer surface of the protrusion 220 and the artificial tooth 300. The adhesion between the inner surfaces of the holes 310 may be more stably maintained.

As shown in FIG. 7 and FIG. 8, in the present invention, the protrusion 220 and the artificial tooth 300 rotate the artificial tooth 300 while the artificial tooth 300 is coupled to the protrusion 220. The anti-rotation unit 600 is further provided for preventing.

Specifically, as shown in Figure 7, the anti-rotation unit 600, the first anti-rotation surface 610 and the insertion hole 310 of the artificial tooth 300 is provided on at least one on the outer surface of the protrusion 220. Inner surface includes a second anti-rotation surface 620 is provided with at least one to be in surface contact with the first anti-rotation surface 610. In the related drawings, a case in which one first anti-rotation surface 610 and one second anti-rotation surface 620 is provided is illustrated, but is not limited thereto and may be provided in two or more numbers. In the state in which the artificial tooth 300 is inserted into the protrusion 220, the outer surface of the protrusion 220 comes into close contact with the inner surface of the insertion hole 310 of the artificial tooth 300, wherein the first anti-rotation surface 610 is also present. The close contact with the second anti-rotation surface 620 prevents the rotation of the artificial tooth (300).

As another example, as shown in FIG. 8, a plurality of protrusions 700 are provided on the outer surfaces of the plurality of protrusions of the protrusion 220, respectively, and the longitudinal direction (artificial to the abutment) is provided on the third inclined surface 320. Protrusion insertion grooves 710 may be provided to correspond to the plurality of protrusions 700 to be inserted along the insertion direction of the teeth. In this case, rotation of the artificial tooth 300 may be further prevented in the state where the artificial tooth 300 and the abutment 200 are coupled to each other. In other words, the protrusion 700 may be repeatedly formed at the same interval along the outer circumferential direction of the protrusion 220 like the gear teeth, and likewise the protrusion insertion groove 710 is also formed correspondingly, for example, the number of the protrusions 700. Is 72, the operator may adjust the coupling direction of the artificial tooth 300 at intervals of 5 degrees with respect to the abutment 200.

In the related drawings, a case in which the protrusions 700 are partially provided instead of being continuously provided along the outer circumferential direction of the protrusion 220 is partially provided, and when the structure is applied, the coupling direction can be adjusted as well. The processing cost can be reduced compared to the case of forming over the area.

Briefly describing the coupling sequence, the fixture 100 is first fixed to the alveolar bone and then the abutment 200 is inserted into the fixture 100. Subsequently, the fixing screw 400 is inserted into the abutment 200 to be coupled to each other, but the protrusions 220 are coupled to each other so as to be partially opened without being completely engaged. Then, the auxiliary extension screw 500 is coupled to the upper side of the protrusion 220, and the artificial tooth 300 is fixed by pressing the artificial tooth 300 on the upper side of the protrusion 220. Subsequently, a fastening tool such as a wrench is inserted through a tool insertion hole communicating with the insertion hole 310 of the artificial tooth 300 to further couple the fixing screw 400 to the abutment 200 so that the protrusion 220 may be formed. Make it more scalable. Subsequently, the opened hole of the artificial tooth 300 is filled with a filler and finished.

According to the present invention, the first protrusion 220 is made of a material having a predetermined elasticity or more, and has a predetermined elasticity with respect to an external force due to the plurality of incision holes 250 spaced apart in the circumferential direction thereof, and a second third inclined surface ( The inclination angle A3 of 320 is formed to be equal to or less than the inclination angle A4 of the outer surface of the protrusion 220 in a state in which the protrusion 220 is extended outward by the coupling of the fixing screw 400, and the third auxiliary extension screw 500. Due to the reasons such as maintaining the extended state of the protrusion 220, additional expansion, etc., the forced indentation coupling of the artificial tooth 300 is possible, and when the indentation is completed, the third inclined surface 320 and the outer surface of the protrusion 220 are Close to each other to maintain a firm coupling.

Although the invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the invention is not limited thereto, but is defined by the claims that follow. Accordingly, one of ordinary skill in the art may variously modify and modify the present invention without departing from the spirit of the following claims.

100: fixture 200: abutment
210: insertion portion 220: protrusion
250: incision hole 260: first inclined surface
320: third inclined surface 340: tapered surface
400: fixed screw 410: second inclined surface
500: auxiliary expansion screw 600: anti-rotation unit
610: first anti-rotation surface 620: second anti-rotation surface
A1, A2, A3: Tilt Angle A4: External Tilt Angle

Claims (10)

A fixture 100 placed in the gum bone;
Insertion portion 210 to be inserted into the fastening groove 110 of the fixture 100, a protrusion 220 protruding into the fixture 100, and a through hole penetrating the insertion portion 210 and the protrusion 220 An abutment (200) comprising: abutments (200) provided with a plurality of incision holes (250) spaced apart from each other in the circumferential direction thereof so as to extend outward by a predetermined or more by an external force;
An artificial tooth 300 coupled to the protrusion 220 in such a manner as to surround the outside of the protrusion of the abutment 200; And
It is inserted into the through hole 230, one end is coupled to the fixture 100 includes a fixing screw 400 for fixing the abutment 200 with respect to the fixture 100,
When the fixing screw 400 is coupled to the protrusion of the abutment 200 is extended to a predetermined or more outward, the artificial tooth (300) is a dental implant that can be combined by forcibly pressed into the extended protrusion (220). The method of claim 1,
The through hole 230 includes a first through hole 231 provided at a position corresponding to the insertion portion 210 and a second through hole 232 provided at a position corresponding to the protrusion 220. and,
The first inclined surface 260 is continuously provided in the inner surface of the second through hole 232 along the circumferential direction thereof, and the outer surface of the head of the fixing screw 400 may be in surface contact with the first inclined surface 260. The second inclined surface 410 is continuously provided along its circumferential direction,
Dental implant, characterized in that the inclination angle (A2) of the second inclined surface (410) is greater than the inclination angle (A1) of the first inclined surface (260). The method of claim 2,
The artificial tooth 300 is provided with an insertion hole 310 to insert the protrusion 220 of the abutment 200, the inner surface of the insertion hole 310 continuously in the circumferential direction of the third An inclined surface 320 is provided, wherein the third inclined surface 320 is inclined downward toward the protrusion 220. The method of claim 3,
The inclination angle A3 of the third inclined surface 320 is the same as the inclination angle A4 of the outer surface of the protrusion 220 in a state in which the protrusion 220 is extended outward by engagement of the fixing screw 400. Dental implants, characterized in that less than or less. The method of claim 3,
Dental implant, characterized in that the tapered surface 340 is provided at the inlet of the insertion hole 310 is inserted into the protrusion 220 along the circumferential direction. The method of claim 3,
The protrusion 220 and the artificial tooth 300 is further provided with an anti-rotation part 600 for preventing rotation of the artificial tooth 300 in a state where the artificial tooth 300 is coupled to the protrusion 220. Dental implant, characterized in that. The method of claim 6,
The anti-rotation unit 600,
A first anti-rotation surface 610 provided on at least one outer surface of the protrusion 220; And
Dental implants, characterized in that it comprises a second anti-rotation surface 620 is provided on the inner surface of the insertion hole 310 of the artificial tooth 300 at least one to be in surface contact with the first anti-rotation surface 610. . The method of claim 1,
The auxiliary extension screw 500 coupled to the inside of the extended protrusion 220 by the coupling of the fixing screw 400 to closely contact the inner surface of the insertion hole 310 of the artificial tooth 300. Dental implants further comprising. The method of claim 8,
A dental implant is provided on the inner circumferential surface of the protrusion 220 and another thread is provided on the outer surface of the auxiliary extension screw 500 to be screwable to the thread. The method of claim 8,
Dental implant, characterized in that the cross-sectional area of the auxiliary expansion screw 500 is provided to gradually decrease from one end to the other end.

Images