WO2020230917A1

WO2020230917A1 - Dental implant system

Info

Publication number: WO2020230917A1
Application number: PCT/KR2019/005781
Authority: WO
Inventors: 허영구
Original assignee: 주식회사 네오바이오텍
Priority date: 2019-05-10
Filing date: 2019-05-14
Publication date: 2020-11-19
Also published as: KR102323729B1; KR20200129839A

Abstract

A dental implant system is disclosed. An aspect of the present invention may provide a dental implant system comprising: a fixture including an implant and an abutment; and a cap fastened to an insertion region of the top of the abutment, wherein the insertion region is formed such that an insertion surface forming the outer circumferential surface has a first inclination angle, the cap is formed such that the inner circumferential surface fastened to the insertion surface has a third inclination angle corresponding to the first inclination angle, the abutment has a recess formed concavely downward from an upper surface portion, and the cap includes a protrusion supported by contact with the inner circumferential surface of the recess.

Description

Dental implant system

The present invention relates to a dental implant system.

A dental implant system is known as one of the surgical methods for repairing a defective part of a natural tooth.

5 is a schematic diagram showing an example of a conventionally known dental implant system.

Referring to FIG. 5, in general, the dental implant system 10 may include a fixture 11, an abutment 12, a connection screw 13, and the like.

The fixture 11 may be placed in the alveolar bone in the defective area. An outer circumferential surface of the fixture 11 may be provided with an external screw thread 11a for insertion and fixing, and an internal thread 11c for fastening the abutment 12 may be provided on the inner circumferential surface.

The abutment 12 is fastened to the fixture 11 so that a portion of the lower end may be disposed in the space 11b inside the fixture 11. A portion of the upper end of the abutment 12 may be exposed to the outside of the fixture 11. A hole 12a for fastening with the fixture 11 may be provided in the center of the abutment 12.

The connection screw 13 may couple the abutment 12 and the fixture 11. When the coupling is made, the upper part including the head of the connection screw 13 may be disposed inside the abutment 12, and the remaining lower part will be combined with the internal screw thread 11c in the space 11b of the fixture 11 I can.

Although not shown, the artificial tooth may be fastened to the upper portion of the abutment 12 by an adhesive means such as cement.

The conventional dental implant system as described above has a structure in which a fixture, abutment, etc. are completely fixedly coupled. Therefore, when various loads are applied to the abutment due to the mastication movement, such loads are transferred to the fixture as they are. This may lead to a decrease in the fixing power of the fixture, or in severe cases, may cause a problem of damaging the fixture.

Embodiments of the present invention are to provide a dental implant system capable of buffering the occlusal force with a fine degree of motion.

In addition, embodiments of the present invention are to provide a dental implant system capable of minimizing the use of bonding means and bonding the crown.

According to an aspect of the present invention, a fixture including an implant and abutment; A cap fastened to the insertion area of the upper end of the abutment; wherein the insertion area is formed such that an insertion surface forming an outer circumferential surface has a first inclination angle, and the cap is an inner circumference fastened to the insertion surface The surface is formed to have a third inclination angle corresponding to the first inclination angle, and the abutment has a groove formed concave downward from an upper surface portion, and the cap is supported in contact with the inner circumferential surface of the groove. A dental implant system may be provided having a protrusion.

The dental implant system according to the embodiments of the present invention has a structure in which a cap or crown is mounted on a fixture, but external forces in various directions applied to the cap or crown may be supported by the inclination of the insertion surface or the support. .

In addition, in the dental implant system according to the embodiments of the present invention, the cap or the crown may have a fine degree of motion by the separation prevention unit, and thus characteristics more similar to those of natural teeth may be implemented.

In addition, in the dental implant system according to the embodiments of the present invention, the cap or crown may be properly supported through the inclination of the insertion surface and the support part, the separation prevention part, etc., so that the use of an adhesive may be omitted or minimized.

1A is an exploded perspective view of a dental implant system according to a first embodiment of the present invention.

1B is a longitudinal cross-sectional view of the dental implant system shown in FIG. 1A.

1C is a longitudinal sectional exploded view of the dental implant system shown in FIG. 1A.

2 is a longitudinal sectional exploded view of a dental implant system according to a second embodiment of the present invention.

3 is a longitudinal sectional exploded view of a dental implant system according to a third embodiment of the present invention.

4 is a longitudinal sectional exploded view of a dental implant system according to a fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be noted that the following embodiments are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following embodiments. The following embodiments are provided to more completely describe the present invention to a person with average knowledge in the relevant technical field, and detailed descriptions of known configurations that are determined to unnecessarily obscure the technical subject matter of the present invention are provided. I will omit it.

1A is an exploded perspective view of a dental implant system according to a first embodiment of the present invention. 1B is a longitudinal cross-sectional view of the dental implant system shown in FIG. 1A. 1C is a longitudinal sectional exploded view of the dental implant system shown in FIG. 1A.

1A to 1C, the dental implant system 100 of the present embodiment may include a fixture 110.

The fixture 110 may be installed and fixed in the alveolar bone. The lower region of the fixture 110 may be disposed inside the alveolar bone, and the upper region of the fixture 110 may be exposed to the outside of the gum. A cap 120 or a crown 160 may be fastened to the upper end of the fixture 110.

The fixture 110 may include an implantable body 110a and an abutment 110b.

The implantation body 110a and the abutment 110b may be coupled to each other to form a single fixture 110.

The implantation body 110a may generally form a lower region of the fixture 110. The implantation body 110a may have a screw thread formed on the outer circumferential surface thereof, thereby being implanted and fixed in the alveolar bone.

A fastening groove with an open top may be formed in the center of the implantation body 110a. A screw thread may be formed on the inner circumferential surface of the implanter 110a forming the fastening groove, whereby the abutment 110b may be fastened with the implanter 110a.

The abutment 110b may generally form an upper region of the fixture 110. The lower region of the abutment 110b may be inserted into the implantation body 110a and may be fastened to the thread of the inner circumferential surface of the implantation body 110a. The upper region of the abutment 110b may be exposed and disposed above the implantation body 110a.

The abutment 110b may have an insertion region 112 on a part of the upper side. The cap 120 or the crown 160 may be fastened to the insertion region 112. In other words, the insertion region 112 may be defined as a partial region of the top of the abutment 110b to which the cap 120 or the crown 160 is fastened.

The implantation body 110a may have a predetermined range of exposed areas 111 on a portion of the upper side. The exposed area 111 may be formed over a predetermined range from the lower end of the insertion area 112. The implantation body 110a is located under the exposed region 111 and may be implanted and fixed in the alveolar bone, and the exposed region 111 may be exposed outside the alveolar bone. That is, the exposed area 111 may be defined as an exposed area from the outside of the alveolar bone to the lower end of the insertion area 122 or the cap 120. The exposed area 111 may generally be intended as a region where the gums come into contact.

If necessary, the exposed area 111 may be formed so that the outer surface thereof is inclined by a predetermined degree in a form in which the cross-sectional area becomes smaller toward the lower side.

The insertion region 112 may have an insertion surface 112a forming an outer circumferential surface. Here, the insertion surface 112a may be formed to be inclined at a predetermined angle. Specifically, the insertion region 112 may be formed to have an outer diameter gradually increasing toward the lower side, and thus, the insertion surface 112a may be formed to be inclined downward by a predetermined degree toward the outer side in the radial direction. Hereinafter, the inclination angle formed by the insertion surface 112a with the vertical direction will be referred to as a first inclination angle a1.

In the center of the insertion region 112, a groove 113 with an open top may be formed. The groove 113 may be formed to extend from the top of the insertion region 112 downward toward the inside of the insertion region 112 by a predetermined degree. The cap 120 or the protrusion 122 of the crown 160 may be disposed in the groove 113.

Here, the inner circumferential surface 113c of the groove 113 may be formed to be inclined at a predetermined angle. More specifically, the inner circumferential surface 113c of the groove 113 to which the protrusion 122 to be described later is in contact and support may be formed to be inclined downward while forming a second inclination angle a1 with respect to the vertical direction. This will be amplified in relation to the cap 120.

Meanwhile, the abutment 110b is supported in contact with the upper end of the implanter 110a at the lower edge of the insertion region 112, and may form an interface T1. That is, the boundary surface T1 may be defined as a portion in which the upper end of the implantable body 110a and the lower end of the insertion region 112 of the abutment 110b are contacted and supported.

Here, the boundary surface T1 may be formed to incline downward toward the outer side in the radial direction. That is, the upper end of the implantable body 110a and the lower end of the insertion region 112 are formed as inclined surfaces corresponding to each other, thereby forming a boundary surface T1 that is inclined downward to the outside in the radial direction. Such an interface T1 may limit the inflow of foreign matter.

Meanwhile, the dental implant system 100 of this embodiment may include a cap 120.

The cap 120 may be fastened to the upper end of the fixture 110 or the abutment 110b. The inner circumferential surface 124 of the cap 120 may be disposed to face the insertion surface 112a provided on the abutment 110b. The inner circumferential surface 124 of the cap 120 may be in close contact with the insertion surface 112a or may be disposed with a predetermined clearance. However, even in the latter case, the space between the inner circumferential surface 124 and the insertion surface 112a of the cap 120 is intended as a sealed space, and the inflow of foreign substances may be restricted through the sealing part 140, which will be described later. .

The inner circumferential surface 124 of the cap 120 may be formed to be inclined at a predetermined angle so as to correspond to the inclination of the insertion surface 112a. That is, in response to the insertion surface 112a of the abutment 110b forming the first inclination angle a1 with respect to the vertical direction, the inner peripheral surface 124 of the cap 120 has a third inclination angle a3 with respect to the vertical direction. ) Can be formed to be inclined to achieve. The third inclination angle a3 may be formed at an angle equal to or corresponding to the first inclination angle a1.

A protrusion 122 may be provided on the inner upper surface of the cap 120.

The protrusion 122 may extend from the inner upper surface of the cap 120 toward the lower side by a predetermined degree. The protrusion 122 is intended to be fastened to the groove 113 described above. That is, the protrusion 122 may be inserted and fastened into the groove 113 through the upper opening of the groove 113.

The protrusion 122 may be inserted and fastened into the groove 133 to support the cap 120 against an external force (eg, lateral external force) applied to the cap 120. The protrusion 122 may have a support surface 122c on an outer circumferential surface. The support surface 122c may be supported in contact with the inner peripheral surface 113c of the groove 113 described above.

The support surface 122c may be formed to be inclined at a predetermined angle. That is, the outer diameter of the protrusion 122 may be gradually decreased toward the lower side, and thus the support surface 122c may form a fourth inclination angle a4 with respect to the vertical direction.

The fourth inclination angle a4 of the support surface 122c may be the same as or at an angle corresponding to the second inclination angle a2 of the groove part 113 described above. Accordingly, the support surface 122c may be supported by forming a contact surface inclined at a predetermined angle with the inner peripheral surface 113c of the groove portion 113.

Here, the fourth inclination angle a4 may be formed at an angle different from the third inclination angle a3. Alternatively, the second inclination angle a2 or the fourth inclination angle a4 may be formed at an angle different from the first inclination angle a1 or the third inclination angle a3. More preferably, the second inclination angle a2 or the fourth inclination angle a4 may be formed to be larger than the first inclination angle a1 or the third inclination angle a3 by a predetermined degree. The difference in the inclination angle as described above enables the support force to be provided for loads or external forces in more various directions.

Meanwhile, the first to fourth inclination angles a1 to a4 may be appropriately changed according to the number of missing teeth and the direction or angle of the fixture 110. For example, in the case of repairing a plurality of missing teeth, for smooth fastening between the cap 120 and the abutment 110b, the first and third inclination angles a1 and a3 may be formed to be larger.

Although not shown, if necessary, the protrusion 122 may include a rotation preventing portion.

The rotation preventing unit may have at least one support surface for rotation of the cap 120 about the longitudinal central axis C. For example, the rotation preventing unit may be implemented in the form of a polygonal pillar. According to one embodiment, the rotation preventing part 122b may be formed in the shape of a square, hexagonal, octagonal column. Thereby, the cap 120 or the crown 160 may be restricted from being rotated with respect to the fixture 110 about the longitudinal central axis C.

Meanwhile, a coupling groove 121 may be formed on the outer circumferential surface of the cap 120. The coupling groove 121 is for increasing the coupling force between the cap 120 and the crown 160, and may be formed to extend in an approximately circumferential direction along the outer circumferential surface of the cap 120, and a plurality of the cap 120 It may be densely arranged vertically on the outer circumferential surface. However, the shape, arrangement, etc. of the coupling groove 121 may be appropriately changed as necessary, and are not limited thereto. In addition, the coupling groove 121 is for coupling between the cap 120 and the crown 160, and may be appropriately omitted when the cap 120 and the crown 160 are integrated as shown below.

If necessary, the cap 120 may be integrated with the crown 160. In this case, the configuration of the cap 120 (such as the protrusion 122) described above may be implemented in a form integrated with the crown 160 at a corresponding position. This may have a shape similar to that of omitting the boundary between the cap 120 and the crown 160 as shown.

If necessary, a screw hole 125 may be formed in the center of the cap 120. The screw hole 125 may be formed to extend vertically so as to pass through the protrusion 122.

Meanwhile, the dental implant system 100 of the present embodiment may include a buffer unit 150.

The buffer unit 150 may be mounted on the upper end of the fixture 110. Specifically, the buffer unit 150 is formed in a ring shape, and may be mounted around the outer circumference of the upper end of the fixture 110.

The buffer unit 150 may include an outer circumferential surface 152 disposed toward the inner circumferential surface 124 of the cap 120 and an upper side surface 151 disposed toward the inner upper surface of the cap 120. have.

The buffer unit 150 may include an elastic body partially or entirely so as to elastically support the fine fluctuation of the cap 120 or the crown 160. For example, the buffer unit 150 may be partially or entirely formed of silicon.

On the other hand, the dental implant system 100 of the present embodiment may include a separation prevention unit 130.

The separation prevention unit 130 may be fastened between the cap 120 and the fixture 110 to restrain the separation of the cap 120 from the fixture 110. The separation preventing unit 130 may be mounted and disposed at a position spaced apart from the upper end of the fixture 110 at a predetermined interval downward. Alternatively, the separation prevention unit 130 may be disposed at a position spaced from the above-described buffer unit 150 downward by a predetermined degree.

The departure prevention part 130 may be formed of a C-ring having elasticity. However, the separation preventing unit 130 may be any one capable of properly restraining the separation of the cap 120, and the shape is not necessarily limited to the illustrated C-ring.

On the other hand, preferably, the departure prevention part 130 may be partially or entirely formed of titanium.

A first fixing groove 114 may be formed at a corresponding position of the fixing body 110 to which the separation prevention part 130 is fastened. In addition, a second fixing groove 123 may be formed at a corresponding position of the cap 120 to which the separation prevention part 130 is fastened. The first and second fixing

grooves

114 and 123 may be disposed to face each other to form a fixing groove 131 for fastening the separation prevention part 130.

The lateral width W1 of the fixing groove 131 may be formed to be greater than the lateral thickness W2 of the separation prevention part 130 by a predetermined degree. Alternatively, the lateral thickness W2 of the separation prevention part 130 may be formed to be smaller than the entire lateral width W1 of the fixing groove 131 by a predetermined amount.

In such a case, the detachment preventing part 130 may be elastically deformed toward the first fixing groove 114 in order to insert and fasten the cap 120 into the fixture 110. In addition, when the cap 120 is completely inserted and fastened, the separation preventing part 130 may be intended to be in close contact with the second fixing groove 123 by elasticity. In this case, the separation prevention part 130 may be disposed between the first fixing groove 114 and the second fixing groove 123 in general. Accordingly, in such a state, the cap 120 may be restricted from being separated from the fixture 110 by the separation preventing unit 130.

Meanwhile, the dental implant system 100 of the present embodiment may include a sealing unit 140.

The sealing part 140 may be disposed in the lower region of the insertion region 112. Alternatively, the sealing part 140 may be disposed below the above-described separation prevention part 130 at a predetermined interval.

The sealing part 140 is formed in a ring shape, and may be mounted and disposed between the outer circumferential surface of the fixture 110 and the inner circumferential surface 124 of the cap 120. The sealing part 140 may be generally intended to be disposed on the lower side of the insertion surface 112a, and restrict the inflow of external foreign matter from the exposed area 111 into the gap between the cap 120 and the fixture 110. I can.

As shown, the sealing part 140 may be mounted and supported on the fixture 110 through a groove formed along the outer circumferential surface of the abutment 110b. However, if necessary, the sealing part 140 is mounted and supported through a groove formed along the inner circumferential surface 124 of the cap 120, or a separate part that is detachable from the fixture 110 or the cap 120 It may be implemented in a form or the like, and is not necessarily limited to what is illustrated.

The sealing part 140 may include an elastic body partially or entirely so as to have sufficient sealing force. For example, the sealing part 140 may be partially or entirely formed of silicon.

The dental implant system 100 as described above may be installed in the order in which the fixture 110 is placed in the alveolar bone of the person to be treated, and the cap 120 or the crown 160 is placed on the top of the fixture 110. .

Here, the cap 120 or the crown 160 may be mounted and supported on the fixture 110 by the separation prevention unit 130. The departure prevention part 130 may be intended to support an external force in the upper (departure) direction applied to the cap 120 or the crown 160 in general.

In addition, a transverse external force applied to the cap 120 or the crown 160, or an external force in which various directions are combined may be supported by the inclination of the insertion region 112 and the protrusion 122. In particular, since the inclination of the insertion region 112 and the inclination of the protrusion 122 are opposite to each other, a support surface can be secured against external forces in various directions.

Due to the above, the cap 120 or the crown 160 may be installed on the fixture 110 by omitting the use of an adhesive or using only a minimum amount of adhesive. Preferably, in the cap 120 or the crown 160, the use of adhesive is omitted at the boundary with the fixture 110, the separation prevention part 130, the slope of the insertion region 112, and the slope of the protrusion 122 It may be installed on the fixture 110 by. Omission of such an adhesive may have advantages in the convenience of the procedure, the possibility of correction and supplementation after the procedure, and side effects due to the adhesive.

Hereinafter, for convenience of description, detailed descriptions of the same or similar configurations as those of the above-described embodiment will be omitted, and different configurations will be mainly described.

2, a dental implant system 200 according to a second embodiment includes a fixture 210 including an implantation body 210a and an abutment 210b, and a cap 220 fastened to the abutment 210b. ), it may include a separation preventing unit 230 to limit the separation of the cap 220. The fixture 210, the cap 220, and the separation prevention part 230 may be formed in the same or similar to the first embodiment described above.

However, in the dental implant system 200 according to the second exemplary embodiment, the sealing unit 140, the buffer unit 150, and components corresponding thereto may be omitted.

Referring to FIG. 3, a dental implant system 300 according to a third embodiment includes a fixture 310 including an implant 310a and an abutment 310b, and a cap 320 fastened to the abutment 310b. ) Can be included. This may be formed in the same or similar to the corresponding configurations of the first embodiment described above.

The dental implant system 300 according to the fifth embodiment may include a separation preventing unit 330 that restricts separation of the cap 320. This functionally corresponds to the departure prevention unit 130 of the first embodiment.

However, unlike the first embodiment, the departure prevention unit 330 of the third embodiment may be composed of a protrusion 331 and a groove 332. The protrusion 331 may extend in a ring shape along the outer circumferential surface of the abutment 310b, and the groove 332 may extend along the inner circumferential surface of the cap 320 to correspond thereto. In some cases, a groove may be provided on the inner circumferential surface of the cap 320, and a protrusion may be provided on the outer circumferential surface of the abutment 310b. The protrusion 331 and the groove 332 are coupled to each other to limit the separation of the cap 320.

Referring to FIG. 4, a dental implant system 400 according to a fourth embodiment includes a fixture 410 including an implantable body 410a and an abutment 410b, and a cap 420 fastened to the abutment 410b. ) Can be included. This may be formed in the same or similar to the corresponding configurations of the first embodiment described above.

In addition, the dental implant system 400 according to the fourth embodiment may include a separation preventing unit 430 that restricts separation of the cap 420.

Here, the departure prevention part 430 may include a ball 431 and an elastic body 432. The ball 431 may be disposed on the outer circumferential surface of the abutment 410b so as to be partially accommodated in the receiving groove 434. The receiving groove 434 may extend from the outer circumferential surface of the abutment 410b toward the abutment 410b by a predetermined degree.

The elastic body 432 may be disposed inside the receiving groove 434 to elastically support the ball 431. The ball 431 may be elastically supported outside the receiving groove 434 by the elastic body 432. The elastic body 432 may be any one capable of elastically supporting the ball 431 with a predetermined elastic force, and may, for example, be composed of a compression spring as shown.

The ball 431 may be elastically coupled to the ball fastening groove 433 by an elastic body 432. Thereby, the cap 420 may be restricted from being separated. The ball fastening groove 433 may be formed to extend in a circular ring shape along the inner circumferential surface of the cap 420.

Although not shown, if necessary, the elastic body 432 may elastically support the ball 431 in a direction inclined at a predetermined angle with respect to the horizontal direction. For example, the elastic body 432 forms an angle of about 45 degrees with respect to the horizontal direction and may elastically support the ball 431. In this case, the receiving groove 434 for accommodating the elastic body 432 may also be formed to be inclined at a corresponding angle.

The ball 431 and the elastic body 432 may be provided with a plurality of sets. That is, a plurality of balls 431 and an elastic body 432 corresponding thereto may be disposed along the outer circumferential surface of the upper end of the abutment 410b. For example, the ball 431 and the elastic body 432 may be provided with 3 to 5 sets along the outer circumferential surface of the abutment 410b. However, the number of balls 431 and elastic bodies 432 is not necessarily limited thereto.

In the above, embodiments of the present invention have been described, but those of ordinary skill in the art will add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. Various modifications and changes can be made to the present invention by means of the like, and this will also be said to be included within the scope of the present invention.

<부호의 설명><Explanation of code>

100: dental implant system (first embodiment) 110: fixture

120: cap 130: separation prevention part

140: sealing part 150: buffer part

160: crown

<이 발명을 지원한 국가연구개발사업><National R&D project that supported this invention>

Assignment identification number: S2318267

Ministry Name: Small and Medium Business Administration

Research management professional institution: Korea Industrial Technology Promotion Agency

Research Project Name: World Class 300 Project R&D Support Project

Research Title: Development of an implant with a structure that is easy to maintain and repair during long-term use as an early-loadable implant with a natural tooth motion (30㎛) and a simple procedure

Contribution Rate: 1/1

Organizer: Neo Biotech Co., Ltd.

Research Period: 2017.10.01. ~ 2019.03.31.

Claims

A fixture including an implant and abutment;

Includes; a cap fastened to the insertion region of the upper end of the abutment,

The insertion area,

The insertion surface forming the outer circumferential surface is formed to have a first inclination angle,

The cap,

An inner circumferential surface fastened with the insertion surface is formed to have a third inclination angle corresponding to the first inclination angle

The abutment,

It has a groove formed concave downward from the upper surface portion,

The cap,

A dental implant system having a protrusion supported in contact with the inner peripheral surface of the groove.
The method according to claim 1,

The groove portion,

The inner circumferential surface on which the protrusion is contact-supported is formed to have a second inclination angle,

The protrusion,

A dental implant system, wherein a support surface supported in contact with the inner circumferential surface is formed to have a fourth inclination angle corresponding to the second inclination angle.
The method according to claim 2,

The second and fourth inclination angles,

Formed in a size different from the first and third inclination angles, dental implant system.
The method according to claim 1,

The second and fourth inclination angles,

A dental implant system that is formed to be inclined in a direction opposite to the first and third inclination angles.
The method according to claim 1,

The cap,

A dental implant system formed integrally with the crown.
The method according to claim 1,

The implantation body,

Doedoe implanted in the alveolar bone, having an exposed area exposed to the outside of the alveolar bone in a partial area of the upper end,

The abutment,

At the lower end of the insertion region inserted and fastened with the cap, an upper end of the implant and an interface are formed,

The interface is,

A dental implant system formed to be inclined downwardly toward the outside in the radial direction.
The method according to claim 1,

It is provided between the cap and the fixture, including a separation preventing portion for restraining the separation of the cap, dental implant system.
The method of claim 7,

It includes a fixing groove to which the departure prevention part is fastened,

The fixing groove,

A first fixing groove formed on an outer circumferential surface of the fixture; And

Formed by a second fixing groove formed on an inner circumferential surface of the groove portion at a position corresponding to the first fixing groove,

The total transverse width formed by the first and second fixing grooves,

A dental implant system that is formed to a predetermined degree greater than the thickness in the transverse direction of the separation prevention part.
The method according to claim 1,

Includes a sealing part for restricting the inflow of foreign substances between the cap and the fixture,

The sealing part,

A dental implant system that includes an elastic body in part or all of it, is formed in a ring shape, and is closely disposed between the outer circumferential surface of the abutment and the inner circumferential surface of the cap.
The method of claim 7,

The departure prevention unit,

A ball in elastic contact with a ball fastening groove formed along the inner circumferential surface of the cap; And

It is disposed in the receiving groove formed in the abutment, an elastic body elastically supporting the ball toward the ball fastening groove; includes,

The ball and the elastic body,

A dental implant system in which a plurality of sets are spaced apart about a longitudinal central axis.