KR102323729B1 - Dental implant system - Google Patents

Abstract

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

Description

Dental implant system {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 natural tooth defect.

5 is a schematic diagram illustrating 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 implanted in the alveolar bone of the defect site. An external screw thread 11a for implantation and fixing may be provided on the outer peripheral surface of the fixture 11 , and an internal thread 11c for fastening the abutment 12 may be provided on the inner peripheral surface.

The abutment 12 is fastened to the fixture 11 so that a lower portion thereof may be disposed in the space 11b inside the fixture 11 . A portion of the upper end of the abutment 12 may be disposed 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 connecting screw 13 may couple the abutment 12 and the fixing body 11 . When the coupling is made, the upper part including the head of the connecting screw 13 may be disposed inside the abutment 12, and the remaining lower part is to be coupled with the internal screw thread 11c in the space 11b of the fixture 11. 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, an abutment, and the like are completely fixedly coupled. Therefore, when various loads are applied to the abutment due to mastication motion, these loads are transferred to the fixture as it is. This may lead to a decrease in the fixing force of the fixture or, in severe cases, may cause a problem of damaging the fixture.

Laid-Open Patent Publication No. 10-2009-0110136 (2009.10.21.) Laid-Open Patent Publication No. 10-2014-0130773 (2014.11.12.) Registered Patent Publication No. 10-1091350 (2011.12.07.)

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

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

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

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

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

In addition, in the dental implant system according to embodiments of the present invention, the cap or crown may be properly supported through the insertion surface and the inclination of the support part, the separation preventing part, etc., so that the use of the 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 cross-sectional exploded view of the dental implant system shown in FIG. 1A .
2 is a longitudinal cross-sectional exploded view of a dental implant system according to a second embodiment of the present invention.
3 is a longitudinal cross-sectional exploded view of a dental implant system according to a third embodiment of the present invention.
4 is a longitudinal cross-sectional exploded view of a dental implant system according to a fourth embodiment of the present invention.
5 is a schematic diagram illustrating an example of a conventionally known dental implant system.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be noted that the following examples are provided to help the understanding of the present invention, and the scope of the present invention is not limited to the following examples. The following embodiments are provided to more completely explain the present invention to those with average knowledge in the relevant technical field, and detailed descriptions for known configurations that may unnecessarily obscure the technical gist of the present invention to be omitted.

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 cross-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 implanted 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 disposed exposed to the outside of the gums. A cap 120 or a crown 160 may be fastened to the upper end of the fixture 110 .

The fixture 110 may include an implant 110a and an abutment 110b.

The implanted body 110a and the abutment 110b may be coupled to each other to form one fixed body 110 .

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

A fastening groove having an open upper end may be formed in the center of the implant 110a. A thread may be formed on the inner circumferential surface of the fixture 110a forming the fastening groove, whereby the abutment 110b may be fastened to the fixture 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 implant 110a and fastened to the thread of the inner circumferential surface of the implant 110a. The upper region of the abutment 110b may be disposed exposed to the upper side of the implant 110a.

The abutment 110b may have an insertion region 112 in an upper portion thereof. A cap 120 or a 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 upper end of the abutment 110b to which the cap 120 or crown 160 is fastened.

The implant 110a may have an exposed area 111 in a predetermined range on an upper portion thereof. The exposed area 111 may be formed over a predetermined range from the lower end of the insertion area 112 . The implant 110a may be placed under the exposed area 111 and fixed to the alveolar bone, and the exposed area 111 may be exposed to the outside of the alveolar bone. That is, the exposed region 111 may be defined as an exposed region from the outside of the alveolar bone to the lower end of the insertion region 122 or the cap 120 . The exposed area 111 may be generally intended as a portion in contact with the gums.

If necessary, the exposed area 111 may be formed to have an outer surface inclined to 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 inclined at a predetermined angle. Specifically, the outer diameter of the insertion region 112 may be formed to gradually increase toward the lower side, and thus the insertion surface 112a may be formed to be inclined downwardly to a predetermined extent toward the radially outer side. Hereinafter, the inclination angle formed by the insertion surface 112a in the vertical direction will be referred to as a first inclination angle a1.

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

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

On the other hand, the abutment (110b) is supported in contact with the upper end of the implant (110a) in the lower edge portion of the insertion region (112), it can form the interface (T1). That is, the interface T1 may be defined as a region in which the upper end of the implant 110a and the lower end of the insertion region 112 of the abutment 110b are supported in contact.

Here, the boundary surface T1 may be formed to be inclined downwardly outward in the radial direction. That is, the upper end of the implant 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 inclined downward in the radial direction. Such an interface T1 may limit the inflow of foreign substances.

Meanwhile, the dental implant system 100 of the present 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 to be a closed space, and the inflow of foreign substances may be restricted through the sealing part 140 to be described later. .

The inner circumferential surface 124 of the cap 120 may be inclined at a predetermined angle to correspond to the inclination of the insertion surface 112a. That is, in response to the insertion surface 112a of the abutment 110b forming a first inclination angle a1 with respect to the vertical direction, the inner circumferential surface 124 of the cap 120 has a third inclination angle a3 with respect to the vertical direction. ) may be formed to be inclined. The third inclination angle a3 may be the same as 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 be formed to extend from the inner upper surface of the cap 120 downward to a predetermined degree. The protrusion 122 is intended to be fastened to the aforementioned groove 113 . 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 pressure external force) applied to the cap 120 . The protrusion 122 may have a support surface 122c on the outer circumferential surface. The support surface 122c may be supported in contact with the inner circumferential surface 113c of the aforementioned groove portion 113 .

The support surface 122c may be inclined at a predetermined angle. That is, the protrusion 122 may be formed to have an outer diameter gradually decreasing 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 corresponding to the second inclination angle a2 of the aforementioned groove portion 113 . For this reason, the support surface 122c may be supported while forming a contact surface inclined at a predetermined angle with the inner circumferential surface 113c of the groove portion 113 .

Here, the fourth inclination angle a4 may be formed at a different angle from the third inclination angle a3 . Alternatively, the second inclination angle a2 or the fourth inclination angle a4 may be formed at a different angle 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 inclination angle as described above allows 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 varied depending on the number of missing teeth, the direction or angle of the fixture 110 , and the like. For example, when repairing a plurality of missing teeth, the first and third inclination angles a1 and a3 may be formed to be larger for smooth coupling between the cap 120 and the abutment 110b.

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

The anti-rotation part may have at least one support surface for rotation of the cap 120 about the longitudinal central axis (C). For example, the anti-rotation unit may be implemented in the form of a polygonal column or the like. According to one embodiment, the anti-rotation part 122b may be formed in the shape of a square, hexagon, or octagonal pole. Accordingly, rotation of the cap 120 or the crown 160 with respect to the fixture 110 about the longitudinal central axis C may be restricted.

On the other hand, a coupling groove 121 may be formed on the outer peripheral 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 approximately in the circumferential direction along the outer circumferential surface of the cap 120 , and a plurality of the cap 120 . It may be arranged densely up and down on the outer circumferential surface. However, the shape, arrangement, etc. of the coupling groove 121 may be appropriately changed as necessary, and is 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 above-described configuration of the cap 120 (such as the protrusion 122 ) may be implemented in an integrated form with the crown 160 at a corresponding position. This may be in a form similar to that in which the boundary between the cap 120 and the crown 160 is omitted from the illustrated bar.

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 penetrate the protrusion 122 .

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

The buffer unit 150 may be mounted on the upper end of the fixture 110 . Specifically, the buffer 150 is formed in the form of a ring (ring), it can be mounted on the outer periphery 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 cushioning unit 150 may include an elastic body in part or all of it so as to elastically support the fine fluctuations of the cap 120 or the crown 160 . For example, the buffer 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 preventing unit 130 may be fastened between the cap 120 and the fixed body 110 , thereby constraining the separation of the cap 120 with respect to the fixed body 110 . The separation prevention unit 130 may be mounted and disposed at a position spaced downward by a predetermined distance from the upper end of the fixture 110 . Alternatively, the separation prevention unit 130 may be disposed at a position spaced downward from the buffer unit 150 described above by a predetermined degree.

The separation prevention part 130 may be formed of a C-ring having elasticity. However, as long as the separation preventing unit 130 can appropriately restrain the separation of the cap 120 , the shape is not necessarily limited to the illustrated C-ring.

On the other hand, preferably, the separation prevention part 130 may be formed of a part or all of titanium (titanium) material.

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

The lateral width W1 of the fixing groove 131 may be formed to be larger than the lateral thickness W2 of the separation preventing part 130 by a predetermined degree. Alternatively, the lateral thickness W2 of the separation preventing portion 130 may be formed to be smaller than the overall lateral width W1 of the fixing groove 131 by a predetermined degree.

In such a case, the separation preventing unit 130 may be intended to elastically deform toward the first fixing groove 114 for insertion and fastening of the cap 120 to the fixing body 110 . In addition, when the cap 120 is fully inserted and fastened, the separation preventing unit 130 may be intended to be in close contact with the second fixing groove 123 by elasticity. In this case, the separation preventing part 130 may be generally disposed between the first fixing groove 114 and the second fixing groove 123 . Accordingly, in such a state, the cap 120 may be restricted from detaching from the fixing body 110 by the detachment 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 a lower region of the insertion region 112 . Alternatively, the sealing unit 140 may be disposed to be spaced apart from each other by a predetermined distance below the above-described separation preventing unit 130 .

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 to limit the inflow of foreign substances from the exposed area 111 to the gap between the cap 120 and the fixture 110 . 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 may be mounted and supported through a groove formed along the inner circumferential surface 124 of the cap 120 , or a separate part separable from the fixed body 110 or the cap 120 . It may be implemented in a form, etc., and is not necessarily limited to the illustrated bar.

The sealing part 140 may include an elastic body in part or all of it 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 implanted on the alveolar bone of the recipient, and the cap 120 or crown 160 is placed on the upper end of the fixture 110 . .

Here, the cap 120 or the crown 160 may be mounted and supported on the fixture 110 by the separation preventing part 130 . The separation preventing unit 130 may be intended to support an external force in the upper (separation) 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 various directions 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, the support surface can be secured against external forces in various directions.

For this reason, 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 crown 160 , the use of adhesive is omitted at the boundary with the fixing body 110 , and the separation prevention part 130 , the inclination of the insertion region 112 , and the inclination of the protrusion 122 . may be installed on the fixture 110 by the Omission of such an adhesive may have advantages in operation convenience, possibility of correction and supplementation after operation, side effects due to adhesive, and the like.

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

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

Referring to FIG. 2 , the dental implant system 200 according to the second embodiment is a fixture 210 including an implant 210a and an abutment 210b, and a cap 220 that is fastened to the abutment 210b. ), and may include a separation prevention part 230 for limiting separation of the cap 220 . The fixing body 210 , the cap 220 and the separation preventing part 230 may be formed in the same or similar manner to the first embodiment described above.

However, in the dental implant system 200 according to the second embodiment, the sealing part 140, the buffer part 150, and the corresponding components of the first embodiment described above may be omitted.

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

Referring to FIG. 3 , the dental implant system 300 according to the third embodiment includes a fixture 310 including an implant 310a and an abutment 310b, and a cap 320 that is fastened to the abutment 310b. ) may be included. It may be formed identically or similarly 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 for restraining the separation of the cap 320 . This corresponds to the separation prevention unit 130 of the first embodiment in function.

However, unlike the first embodiment, the separation preventing unit 330 of the third embodiment may be composed of a protrusion 331 and a groove 332 . The protrusion 331 may be formed to extend in a ring shape along the outer circumferential surface of the abutment 310b, and the groove 332 may be formed to 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, thereby limiting the separation of the cap 320 .

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

Referring to FIG. 4 , the dental implant system 400 according to the fourth embodiment is a fixture 410 including an implant 410a and an abutment 410b, and a cap 420 that is fastened to the abutment 410b. ) may be included. It may be formed identically or similarly 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 detachment prevention unit 430 for restraining the detachment of the cap 420 .

Here, the separation 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 that a part is received in the receiving groove 434 . The receiving groove 434 may be formed extending from the outer peripheral 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 to the outside of the receiving groove 434 by the elastic body 432 . As long as the elastic body 432 has a predetermined elastic force and can elastically support the ball 431, for example, it may be composed of a compression spring as shown.

The ball 431 may be elastically coupled to the ball fastening groove 433 by the elastic body 432 . Thereby, the cap 420 may be restricted from detaching. 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 may form 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.

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

In the above, although embodiments of the present invention have been described, those of ordinary skill in the art can add, change, delete or add components within the scope that does not depart from the spirit of the present invention described in the claims. The present invention may be variously modified and changed by, etc., and this will also be included within the scope of the present invention.

100: dental implant system (first embodiment) 110: fixture
120: cap 130: escape prevention part
140: sealing part 150: buffer part
160: Crown

Claims (10)

a fixture including an implant and an abutment; and
Including; a cap fastened to the insertion area of the upper end of the abutment;
The insertion area is
an insertion surface formed to form an outer circumferential surface of the abutment, and to have a first inclination angle with respect to the vertical direction; and
and a groove formed by being drawn downwardly from the upper surface of the insertion region;
The groove portion,
It is supported in contact with the protrusion formed on the cap and includes an inner circumferential surface having a second inclination angle,
The first inclination angle and the second inclination angle are
It is formed to be inclined in directions opposite to each other with respect to the vertical direction, and is formed to have a different inclination angle, respectively,
the abutment,
It is formed at the lower end of the insertion area and is supported in contact with the upper end of the implant, and includes a boundary surface formed to be inclined downwardly outward in the radial direction,
The implant is
Doedoe implanted in the alveolar bone, a dental implant system having an exposed area exposed to the outside of the alveolar bone in a partial area of the upper end. delete delete delete The method according to claim 1,
The cap is
A dental implant system formed integrally with the crown. delete The method according to claim 1,
A dental implant system provided between the cap and the fixture, comprising a separation preventing part for restraining the separation of the cap. 8. The method of claim 7,
and a fixing groove to which the separation prevention part is fastened;
The fixing groove is
a first fixing groove formed on an outer circumferential surface of the fixing body; and
is formed by; a second fixing groove formed on the inner peripheral surface of the groove portion at a position corresponding to the first fixing groove;
The total lateral width formed by the first and second fixing grooves is,
A dental implant system that is formed to be larger than the lateral thickness of the separation preventing part. The method according to claim 1,
and a sealing part for restricting the inflow of foreign substances between the cap and the fixture,
The sealing part,
A dental implant system, comprising an elastic body in part or all, and is formed in a ring shape, and is arranged in close contact between the outer circumferential surface of the abutment and the inner circumferential surface of the cap. 8. The method of claim 7,
The escape prevention unit,
a ball in elastic contact with the ball fastening groove formed along the inner circumferential surface of the cap; and
It includes; is disposed in the receiving groove formed in the abutment, elastic body for elastically supporting the ball toward the ball fastening groove;
The ball and the elastic body,
A dental implant system, wherein a plurality of sets are spaced apart about a longitudinal central axis.

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