KR20200129837A - Dental implant system - Google Patents

Abstract

Disclosed is a dental implant system. According to one aspect of the present invention, the provided dental implant system includes a fixing body provided with a connection portion at the upper end; and a cap fastened to the connection portion. The connection portion has an insertion surface formed inclined to an outer circumferential surface, and the cap is supported in contact with an inner circumferential surface of a groove portion formed in the connection portion and includes a support portion formed inclined in a direction opposite to the insertion surface.

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 defective part of a natural tooth.

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

Referring to FIG. 7, 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 fixing body provided with a connection portion at the top; And a cap fastened to the connection part, wherein the connection part has an insertion surface obliquely formed on an outer circumferential surface, and the cap is supported in contact with an inner circumferential surface of the groove formed in the connection part, and the insertion surface and A dental implant system including a support formed inclined in the opposite direction may be provided.

According to another aspect of the present invention, it relates to a cap of a dental implant system that is fastened to an upper end of a fixture implanted in an alveolar bone, comprising: an inner circumferential surface disposed to face an outer circumferential surface of the fixture; And a support part protruding downward from an inner upper surface to be inserted and fastened into a groove part formed in the fixture, wherein the inner circumferential surface is formed to be inclined by a predetermined degree with a third inclination angle with respect to the vertical direction, and the support part, A cap of the dental implant system may be provided, in which a support surface that is in contact with the inner circumferential surface of the groove portion is formed to be inclined to a predetermined degree with a fourth inclination angle with respect to a vertical direction.

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.
2A is a longitudinal cross-sectional view of a dental implant system according to a second embodiment of the present invention.
2B is an exploded longitudinal sectional view of the dental implant system shown in FIG. 2A.
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.
5 is a longitudinal sectional exploded view of a dental implant system according to a fifth embodiment of the present invention.
6 is a longitudinal sectional exploded view of a dental implant system according to a sixth embodiment of the present invention.
7 is a schematic diagram showing 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 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.

The dental implant system 100 according to the first embodiment may be intended to be used for a single missing tooth. However, the selection of the dental implant system according to each embodiment may be made by the judgment of the practitioner, and the object to be used is not necessarily limited to those illustrated.

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.

A connection part 110a may be provided in a partial upper portion of the fixture 110. Alternatively, the connection part 110a may generally form an upper region of the fixture 110. The connection part 110a may be partially exposed to the outside of the gum.

A screw thread may be formed on the outer peripheral surface of the lower region of the fixture 110. Thereby, the fixture 110 may be installed and fixed in the alveolar bone.

The connection part 110a may include 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 upper end of the connection portion 110a to which the cap 120 or the crown 160 is fastened.

The connection part 110a may have a predetermined range of exposed areas 111 under the insertion area 112. The exposed area 111 may be defined as an exposed area between the upper side of the fixture 110 exposed above the alveolar bone and the lower end of the cap 120 or the crown 160. 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.

The groove part 113 may include an upper region 113a and a lower region 113b.

The upper region 113a corresponds to the support part 122a provided on the protrusion part 122. The circumferential surface 113c of the upper region 113a may be formed to be inclined at a predetermined angle. Specifically, the circumferential surface 113c of the upper region 113a may form a second inclination angle a2 with respect to the vertical direction and may be formed to be inclined downward.

In the upper region 113a, a support part 122a provided on the protrusion 122 may be disposed, and the circumferential surface 113c may be coupled to the support surface 122c of the support part 122a. This will be amplified in relation to the cap 120.

The lower region 113b corresponds to the rotation preventing part 122b provided on the protruding part 122. The lower region 113b contacts the support surface 122c of the rotation preventing part 122b so as to limit the rotation of the rotation preventing part 122b or the cap 120 about the longitudinal central axis C. Can be supported.

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 connection portion 110a. The inner circumferential surface 124 of the cap 120 may be disposed to face the insertion surface 112a provided on the connection portion 110a. 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 connection portion 110a 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 include a support part 122a.

The support part 122a may be inserted into the groove part 133 to support the cap 120 against an external force (eg, lateral external force) applied to the cap 120. The support part 122a may have a support surface 122c on an outer circumferential surface. The support surface 122c may be supported in contact with the insertion surface 112a of the groove part 113 described above.

The support surface 122c may be formed to be inclined at a predetermined angle. That is, the outer diameter of the support part 122a 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 upper region 113a 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 circumferential surface 113c of the upper region 113a.

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.

If necessary, the protrusion 122 may include a rotation preventing portion (122b).

The rotation preventing portion 122b may be formed extending downward from the lower end of the support portion 122a. However, if necessary, the upper and lower positions of the rotation preventing part 122b and the support part 122a may be changed.

The rotation preventing part 122b may have at least one support surface for rotation of the cap 120 about the longitudinal central axis C. Alternatively, the rotation preventing part 122b may have at least one support surface that is contact-supported with the lower region 113b of the groove part 113. For example, the rotation preventing part 122b may be formed in the shape of a polygonal column, and may be supported in contact with the lower region 113b of the groove part 113 formed in a shape corresponding thereto. 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.

As shown, the support part 122a and the rotation prevention part 122b are integrated with the cap 120, but if necessary, the support part 122a or the rotation prevention part 122b may be formed in a separate and independent structure. . For example, a method in which the protrusion 122 including the support part 122a and the rotation prevention part 122b is implemented in the form of one assembly member and is assembled to the cap 120, and the support part 122a is integrated with the cap 120 A method of forming and implementing only the rotation preventing portion 122b in the form of an assembly member and assembling it to the support portion 122a may be considered.

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.

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 connection part 110a. 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 support part 122a. In particular, since the inclination of the insertion region 112 and the inclination of the support part 122a are in opposite directions, 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 an adhesive is omitted at the boundary with the fixture 110, the separation prevention part 130, the slope of the insertion area 112, and the slope of the support part 122a 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.

2A is a longitudinal cross-sectional view of a dental implant system according to a second embodiment of the present invention. 2B is an exploded longitudinal sectional view of the dental implant system shown in FIG. 2A.

The dental implant system 200 according to the second embodiment may be intended to be used for a plurality of defective teeth. However, the selection of the dental implant system according to each embodiment may be made by the judgment of the practitioner, and the object to be used is not necessarily limited to those illustrated.

In the following, 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.

2A to 2B, the dental implant system 200 of the second embodiment may include a fixture 210, a cap 220, a separation prevention part 230, and a sealing part 240.

In the dental implant system 200 of the second embodiment, the buffer unit 150 of the first embodiment is omitted.

The dental implant system 200 of the second embodiment is intended to be used for a plurality of defective teeth. Compared to the first embodiment described above, the first inclination angle a1 of the insertion surface 212a formed on the connection part 210a This can be formed as large as a predetermined degree. That is, in the second embodiment, the first inclination angle a1 of the insertion surface 212a may be formed to be larger than the first inclination angle a1 (refer to FIG. 1C) of the first embodiment described above.

In the case of repairing a plurality of missing teeth, the first inclination angle a1 as described above may be partially different in the direction or angle of each fixture 210, which may make it difficult to fasten the cap 220 or the crown. It was taken into account.

Meanwhile, a groove part 213 may be formed in the center of the upper end of the connection part 210a. The groove part 213 may have a circumferential surface 213c of an upper portion thereof in contact with the protrusion 222, and the circumferential surface 213c may have a second inclination angle a2. This is similar to the circumferential surface 113c of the first embodiment described above. However, in the second embodiment, the second inclination angle a2 may be formed to be larger than the second inclination angle a2 (refer to FIG. 1C) of the first embodiment described above.

In addition, in the groove portion 213 of the second embodiment, unlike the groove portion 113 of the first embodiment described above, the lower region 113b (see FIG. 1C) is omitted. In the case of the second embodiment, it is intended to be used for a plurality of missing teeth, because a separate structure for restricting the rotation of the cap 22 is not required.

Meanwhile, the cap 220 may be fastened to an upper region of the connection part 210a. The cap 220 may have a protrusion 222 on the inner upper surface. Here, the protrusion 222 may have only the support 222a. That is, the rotation preventing unit 122b (see FIG. 1C) of the first embodiment described above may be omitted. This corresponds to the omission of the lower region 113b in the groove 213.

The cap 220 may be formed to be inclined so that the inner circumferential surface 224 has a third inclination angle a3, which corresponds to the first inclination angle a1 of the insertion surface 212a. In addition, the protrusion 222 or the support 222a may be formed to be inclined so that the support surface 222c has a fourth inclination angle a4, which is at the second inclination angle a2 of the groove 213 and the circumferential surface 213c. Corresponds. The first and third inclination angles a1 and a3 may be formed differently from the second and fourth inclination angles a2 and a4, and preferably, the first and third inclination angles a1 and a3 are the second and fourth inclination angles a2 , may be formed to be smaller than a4) by a predetermined degree.

Meanwhile, the separation prevention part 230 and the sealing part 240 may be formed similarly to the first embodiment described above.

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

The dental implant system 300 according to the third embodiment may be intended to be used for a single missing tooth. This corresponds to the first embodiment described above.

Referring to FIG. 3, a dental implant system 300 according to a third embodiment may include a fixture 310 and a cap 320 that is fastened to a connection part 310a at an upper end of the fixture 310. . The fixture 310 and the cap 320 may be formed in the same or similar to the first embodiment.

The dental implant system 300 according to the third embodiment may include a separation prevention unit 330. The departure prevention part 330 may be formed in the same or similar to the first embodiment.

Meanwhile, in the dental implant system 300 according to the third exemplary embodiment, the sealing unit 140, the buffer unit 150, and components corresponding thereto may be omitted.

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

The dental implant system 400 according to the fourth embodiment may be intended to be used for a plurality of missing teeth. This corresponds to the second embodiment described above.

4, a dental implant system 400 according to a fourth embodiment includes a fixture 410, a cap 420 fastened to a connection portion 410a at an upper end of the fixture 410, and a cap 420 It may include a departure prevention unit 430 for restraining the separation of. The fixture 410, the cap 420, and the separation preventing portion 430 may be formed in the same or similar to the corresponding components of the second embodiment described above.

In the fourth embodiment, the sealing unit 240 of the second embodiment and components corresponding thereto may be omitted.

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

The dental implant system 500 according to the fifth embodiment may be intended to be used for a plurality of missing teeth. This corresponds to the second embodiment described above.

Referring to FIG. 5, the dental implant system 500 according to the fifth embodiment may include a fixture 510 and a cap 520 that is fastened to a connection portion 510a at an upper end of the fixture 510. . This may be formed in the same or similar to the corresponding configurations of the second embodiment described above.

In addition, the dental implant system 500 according to the fifth embodiment may include a separation prevention unit 530 that restricts separation of the cap 520. This functionally corresponds to the departure prevention unit 130 of the first embodiment.

However, unlike the first embodiment, the departure prevention part 530 of the fifth embodiment may be composed of a protrusion 531 and a groove 532. The protrusion 531 may extend in a ring shape along the outer circumferential surface of the connection portion 510a, and the groove 532 may extend along the inner circumferential surface of the cap 520 to correspond thereto. In some cases, a groove may be provided on the inner circumferential surface of the cap 520, and a protrusion may be provided on the outer circumferential surface of the connecting portion 510a. The protrusion 531 and the groove 532 are coupled to each other to limit the separation of the cap 520.

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

The dental implant system 600 according to the sixth embodiment may be intended to be used for a plurality of defective teeth. This corresponds to the second embodiment described above.

Referring to FIG. 6, the dental implant system 600 according to the sixth embodiment may include a fixture 610 and a cap 620 that is fastened to a connection portion 610a at an upper end of the fixture 610. . This may be formed in the same or similar to the corresponding configurations of the second embodiment described above.

In addition, the dental implant system 600 according to the sixth embodiment may include a separation prevention unit 630 that restricts separation of the cap 620.

Here, the departure prevention part 630 may include a ball 631 and an elastic body 632. The ball 631 may be disposed on the outer circumferential surface of the connecting portion 610a so that a portion of the ball 631 is accommodated in the receiving groove 634. The receiving groove 634 may extend from the outer circumferential surface of the connecting portion 610a toward the center toward the inside of the connecting portion 610a by a predetermined degree.

The elastic body 632 may be disposed inside the receiving groove 634 to elastically support the ball 631. The ball 631 may be elastically supported outside the receiving groove 634 by the elastic body 632. The elastic body 632 may have a predetermined elastic force and may be formed of a compression spring as shown, for example, as long as it can elastically support the ball 631.

The ball 631 may be elastically coupled to the ball fastening groove 633 by an elastic body 632. Thereby, the cap 620 may be restricted from being separated. The ball fastening groove 633 may extend in a circular ring shape along the inner circumferential surface of the cap 620.

Although not shown, if necessary, the elastic body 632 may elastically support the ball 631 in a direction inclined at a predetermined angle with respect to the horizontal direction. For example, the elastic body 632 forms an angle of about 45 degrees with respect to the horizontal direction, and may elastically support the ball 631. In this case, the receiving groove 634 for accommodating the elastic body 632 may also be formed to be inclined at a corresponding angle.

The ball 631 and the elastic body 632 may be provided with a plurality of sets. That is, a plurality of balls 631 and an elastic body 632 corresponding thereto may be disposed along the outer circumferential surface of the connection part 610a. For example, the ball 631 and the elastic body 632 may be provided with 3 to 5 sets along the outer circumferential surface of the connection part 610a. However, the number of balls 631 and the elastic body 632 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.

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

Claims (10)

A fixture provided with a connection portion at the top; And
Includes; a cap fastened to the connection portion,
The connection part,
It has an insertion surface formed inclined to the outer peripheral surface,
The cap,
Doedoe supported on the inner circumferential surface of the groove formed in the connection portion, including a support formed inclined in a direction opposite to the insertion surface, dental implant system. The method according to claim 1,
The cap,
A dental implant system formed integrally with the crown. The method according to claim 1,
The fixed body,
It is placed in the alveolar bone with a thread on the outer peripheral surface,
The connection part,
A dental implant system having an exposed area exposed to the lower end of the cap and intended for contact of the tooth. The method according to claim 1,
The cap,
Includes a rotation preventing portion extending toward the groove,
The rotation preventing unit,
A dental implant system configured to contact the inner circumferential surface of the groove at a corresponding position to limit rotation of the cap about a longitudinal central axis. The method according to claim 1,
It is fastened between the cap and the connecting portion, including a separation preventing portion for limiting the separation of the upper direction of the cap, dental implant system. The method of claim 5,
The connection part,
In order to fasten the separation prevention part, a first fixing groove is formed on the outer peripheral surface of the insertion surface,
The cap,
A second fixing groove is formed on the inner circumferential surface so as to correspond to the first fixing groove,
The departure prevention unit,
A state accommodated in the first fixing groove for insertion and fastening of the cap into the connection portion; And
In order to limit the separation of the cap from the connection portion, at least one side is arranged in close contact with the second fixing groove; a dental implant system. The method according to claim 1,
Includes a sealing part that restricts the inflow of foreign substances between the cap and the connection part,
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 an outer circumferential surface of the insertion surface and an inner circumferential surface of the cap. The method according to claim 1,
It includes a buffer portion fastened to the upper end of the connection,
The buffer unit,
It includes an elastic body in part or all of it, and is formed in a ring shape, and has an outer circumferential surface disposed toward the inner circumferential surface of the cap, and an upper surface disposed toward the inner upper surface of the cap, dentistry Implant system. It relates to a cap of a dental implant system that is fastened to the top of a fixture placed in the alveolar bone,
An inner circumferential surface disposed to face the outer circumferential surface of the fixture; And
Includes; a support portion protruding downward from the inner upper surface so as to be inserted and fastened into the groove formed in the fixture,
The inner peripheral surface,
It is formed to be inclined by a predetermined degree with a third inclination angle with respect to the vertical direction,
The support part,
A cap of the dental implant system, wherein a support surface that is supported in contact with the inner circumferential surface of the groove is formed to be inclined by a predetermined degree with a fourth inclination angle with respect to a vertical direction. The method of claim 9,
The fourth inclination angle is,
The cap of the dental implant system is formed in a direction opposite to the third inclination angle and is formed to be greater than the third inclination angle by a predetermined degree.

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