DENTAL ANCHORING SYSTEM FOR ANCHORING A CARRIER ELEMENT TO AN ANCHORING ELEMENT

Abstract

A dental anchoring system configured to anchor a carrier element at an anchoring element, the dental anchoring system including the carrier element; the anchoring element; and a fastening bolt, wherein the anchoring element includes a receiving section configured to receive the carrier element and a threaded bore, wherein the carrier element is configured to directly or indirectly attach a dental superstructure element or a dental prosthesis and wherein the carrier element includes a support section configured to be supported at the receiving section of the anchoring element, wherein the carrier element is attachable at the anchoring element by a first anchoring type using the fastening bolt by receiving the support section of the carrier element at the receiving section of the anchoring element and threading the fastening bolt into the threaded bore of the anchoring element.

Claims

1. A dental anchoring system configured to anchor a carrier element at an anchoring element, the dental anchoring system comprising: the carrier element; the anchoring element; and a fastening bolt, wherein the anchoring element includes a receiving section configured to receive the carrier element and a threaded bore, wherein the carrier element is configured to directly or indirectly attach a dental superstructure element or a dental prosthesis and wherein the carrier element includes a support section configured to be supported at the receiving section of the anchoring element, wherein the carrier element is attachable at the anchoring element by a first anchoring type using the fastening bolt by receiving the support section of the carrier element at the receiving section of the anchoring element and threading the fastening bolt into the threaded bore of the anchoring element, wherein the carrier element is attachable at the anchoring element in a disengageable manner optionally also by a second anchoring type without using the fastening bolt by providing a positive form locking connection between an outer part and an inner part that is disengageable without destruction wherein the inner part is interlockable in the outer part by a press button or interlocking connection elastically deforming the inner part or the outer part, wherein the outer part is provided at the anchoring element and the inner part is provided at the carrier element, or wherein the inner part is provided at the anchoring element and the outer part is provided at the carrier element, wherein the carrier element is received with the support section at the receiving section of the anchoring element by positive interlocking of the inner part in the outer part without destruction so that the carrier element is removably supported at the anchoring element, and wherein the carrier element is pullable from the anchoring element by unlocking the inner part from the outer part without destruction when disengaging the second anchoring type.

2. The dental anchoring system according to claim 1, wherein the dental anchoring system is reconfigurable from the second anchoring type to the first anchoring type by pulling the carrier element from the anchoring element, in particular by removing the inner part or the outer part and then receiving the carrier element with its support section at the receiving section of the anchoring element and threading the fastening bolt into the threaded bore of the anchoring element.

3. The dental anchoring system according to claim 1, wherein the carrier element forms an apically open cavity with an inner surface of the carrier element, and wherein the apically open cavity is configured to receive an arrangement of the inner part or the outer part in the cavity, or wherein the inner part or the outer part is arranged in the cavity already from the beginning so that a shaft of the fastening bolt is at least partially insertable through the apically open cavity.

4. The dental anchoring system according to claim 1, wherein the inner part or the outer part is formed at a coronal end of a second bolt which is threadable with an apical end into the threaded bore hole of the anchoring element instead of the fastening bolt when using the second anchoring type.

5. The dental anchoring system according to claim 1, wherein the inner part and the outer part are separate parts that are attachable at the carrier element and at the anchoring element, or wherein the inner part is integrally configured in one piece at the anchoring element or the carrier element or the outer part is integrally configured in one piece at the anchoring element or the carrier element.

6. The dental anchoring system according to claim 1, wherein the outer part is configured at least partially spherical and the inner part is configured at least partially complementary spherical so that the outer part and the inner part by themselves are respectively pivotable into a plurality of pivot positions relative to each other when the outer part is interlocked in the inner part.

7. The dental anchoring system according to claim 6, wherein the inner part includes an outer spherical layer or spherical segment surface and the outer part includes an inner spherical layer or spherical segment surface that is complementary to the outer spherical layer of spherical segment surface, and wherein the inner spherical layer or spherical segment surface and the outer spherical layer or spherical segment surface contact each other.

8. The dental anchoring system according claim 6, wherein a defined relative pivot position is provided where an orientation of a center axis of the outer part or an orientation of a center axis of the inner part corresponds to a mounting or dismounting direction of the carrier element with reference to the anchoring element where the carrier element and the anchoring element are mountable at each other and dismountable from each other.

9. The dental anchoring system according to claim 8, further comprising: at least one alignment element, wherein the outer part or the inner part includes an engagement section configured to engage the at least one alignment element, wherein the outer part and the inner part are movable into the defined relative pivot position through an engagement of the at least one alignment element at the engagement section and by a subsequent movement of the at least one alignment element.

10. The dental anchoring system according to claim 8, wherein the outer part and the inner part jointly form a double joint, wherein a first joint of the double joint enables a relative pivoting of the outer part and the inner part about a first joint axis in a first pivot plane, and wherein the second joint of the double joint enables a relative pivoting of the outer part and the inner part about a second joint axis in a second pivot plane.

11. The dental anchoring system according to claim 10, wherein the first joint axis is perpendicular to the second joint axis.

12. The dental anchoring system according to claim 10, wherein the outer part includes two lobes protruding in parallel from a base element and respectively including inner spherical layer surfaces or spherical segment surfaces which contact and envelop diametrically opposed outer spherical layer or spherical segment surfaces at the inner part so that the first pivot plan extends parallel to the two lobes and the first joint axis extends perpendicular to the two lobes.

13. The dental anchoring system according to claim 10, wherein the second joint axis is coaxial to the center axis of the inner part or to a center axis of the anchoring element.

14. The dental anchoring system according to claim 8, wherein the outer part is attached at the anchoring element or the carrier element in the defined relative pivot position, or wherein the inner part is attached at the anchoring element or the carrier element in the defined relative pivot position.

15. The dental anchoring system according to claim 1, wherein the carrier element includes a central pass-through opening including an opening edge configured to lock a bolt head of the fastening bolt and to pass a shaft of the fastening bolt through.

16. The dental anchoring system according to claim 1, wherein the receiving section of the anchoring element and the support section of the carrier element are formed by complementary cone surfaces.

17. The dental anchoring system according to claim 1, wherein the anchoring element includes an implant or an abutment.

18. A dental anchoring system configured to anchor a carrier element at an anchoring element, the anchoring system comprising: the carrier element and the anchoring element, wherein the carrier element is configured directly or indirectly attachable at a dental super structure element or a dental prosthesis, and wherein the carrier element is disengageably attachable at the anchoring element by a positive form locking connection between an outer part and an inner part that is disengageable without destroying the outer part or the inner part so that the inner part is interlockable in the outer part by a press button- or interlocking connection that elastically deforms the inner part or the outer part, wherein the outer part is provided at the anchoring element and the inner part is provided at the carrier element, or wherein the inner part is provided at the anchoring element and the outer part is provided at the carrier element, and wherein the outer part or the inner part are separate components, wherein the outer part is configured at least partially spherical and the inner part is configured at least partially complementary spherical so that the outer part and the inner part by themselves are pivotable into a plurality of relative pivot positions when the inner part is interlocked in the outer part, wherein a defined relative pivot position is provided among the plurality of relative pivot positions where a center axis of the inner part and a center axis of the outer part are arranged non-coaxial and where an orientation of the center axis of the outer part or an orientation of the center axis of the inner part corresponds to an assembly or disassembly direction of the carrier element with reference to the anchoring element and where the carrier element and the anchoring element are able to be assembled or disassembled, and wherein the outer part is attached at the anchoring element or the carrier element in the defined relative pivot position, or wherein the inner part is attached at the anchoring element or the carrier element in the defined relative pivot position.

19. The dental anchoring system according to claim 18, wherein the outer part and the inner part form a double joint in combination, wherein a first joint of the double joint facilitates a relative pivoting of the outer part and the inner part about a first joint axis in a first pivot plane, and wherein a second joint of the double joint facilitates a relative pivoting of the outer part and the inner part about a second joint axis in a second pivot plane.

20. The dental anchoring system according to claim 19, wherein the first joint axis extends perpendicular to the second joint axis.

21. The dental anchoring system according to claim 19, wherein the outer part includes two lobes that protrude in parallel from a base element and that respectively include inner spherical layer surfaces or spherical segment surfaces which contact and envelop diametrically opposed outer spherical layer or spherical segment surfaces at the inner part so that the first pivot plane runs parallel to the two lobes and the first joint axis runs perpendicular to the two lobes.

22. The dental anchoring system according to claim 19, wherein the second joint axis is coaxial to the center axis of the inner part or to a center axis of the anchoring element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The invention is subsequently described based on advantageous embodiments with reference to drawing figures, wherein

[0078] FIG. 1 illustrates a cross sectional view of a dental anchoring system with a first anchoring type according to an advantageous embodiment of the invention in an assembled condition of a carrier element at an anchoring element by an fastening bolt threaded into a threaded bore hole of the anchoring element;

[0079] FIG. 2 illustrates a cross sectional view of the dental anchoring system of FIG. 1 during disassembly of the carrier element from the anchoring element by removing the fastening bolt and pulling the carrier element from the anchoring element;

[0080] FIG. 3 illustrates a cross sectional view of the dental anchoring system of FIG. 1 where a bolt is threaded into the threaded bore hole of the anchoring element instead of the fastening bolt wherein an inner part of a disengageable positive form locking connection between the outer part and the inner part is configured at the bolt;

[0081] FIG. 4 illustrates a cross sectional view of the dental anchoring system of FIG. 1 where the outer part of the disengageable form locking connection is placed on the inner part and aligned therewith.

[0082] FIG. 5 illustrates a cross sectional view of the dental anchoring system of FIG. 1 where the carrier element has been placed on the outer part of the disengageable form locking connection which implements a second anchoring type of the dental anchoring system;

[0083] FIG. 6 illustrates a cross sectional view of a dental anchoring system according to another embodiment of the invention where the inner part of the disengage able form locking connection is already integrally formed at the anchoring element when using the second anchoring type;

[0084] FIG. 7 illustrates a cross sectional view of the dental anchoring system of FIG. 6 where the outer part and the carrier element are mounted on the inner part;

[0085] FIG. 8 illustrates a cross sectional view of the dental anchoring system using the second anchoring type according to another embodiment of the invention;

[0086] FIG. 9 illustrates a cross sectional view along the line B-B of the dental anchoring system according to FIG. 8;

[0087] FIG. 10 illustrates cross sectional view of the dental anchoring system according to FIG. 8 that is rotated by 90 degrees relative to the cross sectional view of FIG. 9;

[0088] FIG. 11 illustrates a cross sectional view along the line C-C of the dental anchoring system according to FIG. 10;

[0089] FIG. 12 illustrates an isometric view of the dental anchoring system of according to FIG. 11.

DETAILED DESCRIPTION OF THE INVENTION

[0090] FIG. 1 illustrates a cross sectional view of a dental anchoring system using a first anchoring type 100 according to an advantageous embodiment of the invention in an assembled condition of a carrier element 3 at an anchoring element 9 using an fastening bolt 4 that is threaded into a threaded bore hole 10 of the anchoring element 9.

[0091] The anchoring element 9, thus e.g. an abutment includes an anchoring section 2 including e.g. an external thread configured to be anchored in an inner thread of an implant and a receiving section 1 configured e.g. as an exterior cone that tapers in a coronal direction and that is configured to receive the carrier element 3 and the central threaded bore hole 10. The carrier element 3 which is configured herein, e.g. as a sleeve in particular made from titanium or a titanium alloy is configured at its outer surface 17 for direct or indirect attachment at a dental super structure element in particular a dental prosthesis. Alternatively the carrier element 3 can also be formed by an abutment or can include the abutment wherein the anchoring element 9 is then formed by an implant.

[0092] A support section 12 is formed at an inner surface 11 of the carrier element 3 and also configured as an inner cone that also tapers in the coronal direction configured to be supported at the receiving section 1 of the anchoring element 9 and an apically open cavity 5 is arranged axially adjacent thereto. In the dental anchoring system using the first anchoring type 100 illustrated herein a bolt head 13 of the fastening bolt 4 is locked at an edge of a central pass through bore hole 14 of the carrier element 3 and a shaft 15 of the fastening bolt 4 extends coaxially through the cavity 5 into the threaded bore hole 10 in the anchoring element 2. The receiving section (outer cone 1) of the anchoring element 9 and the shaft 15 of the fastening bolt 4 protrudes into the cavity 5 in an assembled condition of the dental anchoring system using the first anchoring type 100.

[0093] The cavity 5 of the carrier element 3, however, is configured larger than required for the protrusion of the receiving section (outer cone 1) of the anchoring element 9 and of the shaft 15 of the fastening bolt 4 for as evident from FIG. 1. Thus, the cavity 5 forms an open annular cavity 16 in the illustrated dental anchoring system in the first anchoring type 100 wherein the annular cavity is defined by the radially outer circumferential surface 15 of the fastening bolt 4, the receiving section (outer cone) 1 of the anchoring element 9 and the inner surface of the carrier element 3.

[0094] In the dental anchoring system using the first anchoring type 100 the carrier element 3 is attached at the anchoring element 9 using the fastening bolt 4 by clamping the conical support section 12 of the carrier element 3 against the complementary conical receiving section 1 of the anchoring element 9 by the threaded fastening bolt 4, that extends through the cavity 5 with its shaft 15 and that is threaded into the threaded bore hole 10 of the anchoring element 9. Additionally the sleeve shaped carrier element 3 contacts a rim of the anchoring element configured as a stop with an apical end of the carrier element 3 configured as a cylindrical sleeve edge in an assembled condition of the dental anchoring system using the first anchoring type 100 as illustrated in FIG. 1.

[0095] FIG. 2 illustrates a cross sectional view of the dental anchoring system in the first anchoring type according to FIG. 1 during disassembly of the carrier element 3 from the anchoring element 9 after removing the fastening bolt 4 and axially pulling the carrier element 3 from the anchoring element 9. Thus, the conical support section 12 of the carrier element 3 and the conical receiving section 1 of the anchoring element 9 move out of engagement.

[0096] FIG. 3 illustrates a cross sectional view of the dental anchoring system in the first anchoring type according to FIG. 1 where a bolt 18 is threaded into the threaded bore hole 10 of the anchoring element 9 instead of the fastening bolt 4 wherein an inner portion of a disengageable form locking connection is configured at a top of the bolt integrally in one piece between the outer part 7 and the inner part 6 illustrated in FIG. 4. The inner part 6 is thus configured e.g. as a bolt head of the bolt 18 at a coronal end of the bolt head.

[0097] The inner part 6 like the bolt 18 is made e.g. from a rather stiff material like metal whereas the outer part 7 is configured e.g. cap shaped and made from a comparatively elastic synthetic material. The inner part 6 includes e.g. an outer spherical layer surface 19 and the outer part 7 includes an inner spherical layer surface 20 that is complementary to the outer spherical layer surface 19 so that the inner part 6 is pressable or interlockable in the outer part 7 using a press button or inter locking connection elastically deforming the outer part 7 so that the connection is configured as a ball joint where the outer part 7 and the inner part 6 are freely pivotable relative to each other in all rotational degrees of freedom as illustrated in FIG. 4. Thus, the cap shaped outer part 7 has a cross section that is undercut with respect to the cross section of the inner part 6 so that the locking or unlocking of the press button or interlocking connection is enabled by the elastic deformation of the outer part 7.

[0098] The dental anchoring system furthermore includes an alignment element 8 thus configured e.g. as an alignment rod, whose end is engageable at an engagement section 22 of the outer part 7 in order to pivot or align the outer part about a center axis of the cap shaped outer part 7 relative to the center axis 24 of the inner part 6 by a defined pivot angle α.sub.0.

[0099] Due to the spherical and circumferential outer and inner spherical layer surfaces 19, 20 at the outer part 7 and the inner part 6, a pivoting of the center axis 23 of the outer part 7 relative to the center axis 24 of the inner part 6 is possible in all directions and in particular in all planes. Consequently, the outer part 7 can be pivoted additionally by the alignment element 8 about the center axis 24 of the inner part 6 or about the center axis of the anchoring element 9 about a defined pivot angle β.sub.0. The center axis 24 of the inner part 7 is e.g. coaxial to the center axis of the anchoring element 9.

[0100] The defined pivot angle α.sub.0 and the defined pivot angle β.sub.0 designate a defined relative pivot position α.sub.0, Po between the outer part 7 and the inner part 6 in which e.g. the center axis 23 of the outer part 7 has an orientation which corresponds to a pull off direction of the carrier element 3 from the anchoring element 2 when disengaging the press button or interlocking connection. Vice versa, the defined relative pivot position α.sub.0, β.sub.0 represents a mounting direction between the carrier element 3 and the anchoring element 9 when assembling the press button or interlocking connection. In the defined relative pivot position α.sub.0, β.sub.0 in particular the center axis 23 of the outer part 7 and the center axis 24 of the inner part 6 can be non-coaxial.

[0101] A pivoting of the center axis 23 of the outer part 7 relative to the center axis 24 of the inner part 6 into the defined relative pivot position, α.sub.0, β.sub.0, can be required when the dental prosthesis includes plural implants which have not been implanted in parallel with one another, so that the wedging among the implants and damages to the outer part and/or the inner part would otherwise be created when pulling the carrier element 3 from the anchoring element 9.

[0102] According to another embodiment, an alignment element can be omitted and the defined relative pivot position α.sub.0, Po between the outer part 7 and the inner part 6 can be established by manual engagement.

[0103] FIG. 4 shows the condition of the dental anchoring system where the outer part 7 is placed on the inner part 6 under external force impact and elastic deformation of the outer part 7 and aligned according to the defined relative pivot position α.sub.0, Po by the alignment element 8. The mounting and dismounting direction or pull off direction defined by the center axis 23 of the aligned outer part 7 can thus have a pivot angle α.sub.0 with respect to the center axis 24 of the inner part 6 that differs from 0 as evident in particular from FIG. 4.

[0104] FIG. 5 shows a cross sectional view of the dental anchoring system of FIG. 1 where the carrier element 3 has been placed onto the outer part 7 that is oriented in the defined relative pivot position α.sub.0, β.sub.0 which implements the dental anchoring system in a second anchoring type 200. For example the inner surface 11, or the cavity 5 includes a rounded circular segment shape 25 at its coronal end wherein the circular segment shape 25 is configured complementary to the outer radius of the cap shaped outer part 7 so that the outer part 7 can be arranged and attached in the rounded shape 25 of the carrier element 3. The connection between the outer part 7 and the inner surface 11 of the carrier element in the cavity 5 can be obtained e.g. by bonding or gluing. Instead, a connection that is disengageable without destruction can also be provided between the outer part 7 and the carrier element 3.

[0105] In the second anchoring type 200 of the dental anchoring system, the carrier element 3 can be pulled off together with the dental prosthesis supported thereon and the outer part 7 in the pull off direction from the anchoring element 9 and in particular from the inner part that remains thereon by disengaging the press button or interlocking connection e.g. by the patient in order to perform a cleaning of the dental prosthesis. The press button or interlocking connection of the inner part 6 and the outer part 7 is then disengaged without destruction because the outer part 7 made from elastic synthetic material can elastically deform when the inner part 6 unlocks.

[0106] Therefore the dental anchoring system is reconfigurable from the first anchoring type 100 according to FIG. 1 to the second anchoring type 200 according to FIG. 5 in particular by disengaging the fastening bolt 4, pulling the carrier element 3 from the anchoring element 9 and arranging the inner part 6 at the anchoring element 9 or connecting it therewith, interlocking the outer part 7 with the inner part 6 and aligning the outer part according to a predetermined pull off direction and then arranging or connecting the carrier element at the outer part 7.

[0107] Furthermore the dental anchoring system is reconfigurable from the second anchoring type 200 according to FIG. 5 to the first anchoring type 100 according to FIG. 1 in particular in that the carrier element 3 is pulled from the anchoring element 9 in the pull off direction, the outer part 7 is removed from the carrier element 3 and the bolt 18 with the inner part 6 is removed from the anchoring element 9 and then the carrier element 3 is axially joined again with the anchoring element 9 and the fastening bolt 4 is run through the pass through bore hole in the carrier element 3 and threaded into the threaded bore hole 10 of the anchoring element 9. This is done easily since the threaded bore hole 10 is still provided in the anchoring element 9.

[0108] FIGS. 6 and 7 respectively show a cross sectional view of a dental anchoring system using the second anchoring type according to another advantageous embodiment of the invention where the inner part 6 of the disengageable form locking connection is integrally formed at the anchoring element 9 or its receiving section 1. Thus, the additional bolt 18 according to the embodiment of FIGS. 3-5, can be omitted. The threaded bore hole 10 for the fastening bolt 4 then protrudes centrally through the inner part 6 as illustrated in FIG. 6.

[0109] FIG. 7 shows the dental anchoring system using the second anchoring type 200 in assembled condition, this means with the outer part 7 and the carrier element 3 mounted to the inner part 6. The reconfiguration from the first anchoring type to the second anchoring type and vice versa is then performed as described in the embodiments according to FIGS. 1-5. The only difference being that the inner part is not arranged at the anchoring element 9 nor has to be removed therefrom.

[0110] Furthermore, the center axes 23, 24 of the outer part 7 and of the inner part 6 are e.g. parallel to one another so that the outer part 7 is oriented into this position by the alignment element 8 relative to the inner part 6 or the outer part 7 is placed on the inner part 6 right from the beginning.

[0111] FIG. 8 is a cross sectional view of a dental anchoring system using the second anchoring type 200 according to another advantageous embodiment of the invention. FIG. 9 illustrates a cross sectional view of the line B-B of the dental anchoring system according to FIG. 8. FIG. 10 illustrates a cross sectional view of the dental anchoring system of FIG. 8 that is rotated by 90 degrees relative to the cross sectional view of FIG. 9. FIG. 11 illustrates a cross sectional view along the line C-C of the dental anchoring system of FIG. 10. The inner part 6 is integrally configured in one piece with the anchoring element 9 like in the embodiment of FIGS. 6 and 7. Furthermore, also the center axis 24 of the inner part 6 is configured e.g. coaxial of the center axis of the anchoring element 9.

[0112] In this additional embodiment the outer part 7 and the inner part 6 can form a double joint.

[0113] A first joint of the double joint can perform the pivoting indicated in FIG. 12 by a first arrow 29 between the outer part 7 and the inner part 6 by changing the pivot angle α between the center axis 23 of the outer part 7 and the center axis 24 of the inner part 6 advantageously about a first joint axis 32 and in a first pivot plane 26 and in both rotation directions within this first pivot plane 26. Then a defined pivot angle α.sub.0 can be adjusted between the center axis 23 of the outer part 7 and the center axis 24 of the inner part 6 like in the embodiment described supra, wherein the pivot angle characterizes a desired or predetermined assembly or disassembly direction of the carrier element 3 relative to the anchoring element 9 within the first pivot plane 26. The first pivot plane 26 is in particular parallel to the center axis 24 of the inner part 6 or parallel to the center axis of the anchoring element 9. Furthermore, the first joint axis 32 is perpendicular to the center axis 24 of the inner part 6.

[0114] The first pivot plane 26 can be aligned by a rotation between the outer part already connected with the inner part by positive form locking and the inner part 6 in particular about the center axis 24 of the inner part 6 or the center axis of the anchoring element 9 about a second joint axis 33 of a second joint of the double joint in a second pivot plane 31 by a defined pivot angle β.sub.0 so that the first pivot plane 26 is parallel to the desired or predetermined assembly or disassembly direction of the carrier element 3 relative to the anchoring element 9. In particular the second joint axis 33 of the second joint is coaxial with the center axis 24 of the inner part 6 or with the center axis of the anchoring element 9.

[0115] Thus, a pivoting of the outer part 7 about the center axis 24 of the inner part 6 by the pivot angle β is possible up to 180° degrees in both directions in the second pivot plane 31 as indicated by the second arrow 30 in FIG. 12. The second pivot plane 31 is in particular perpendicular to the center axis 24 of the inner part 6 and/or to the center axis of the anchoring element 9. Furthermore, the second joint axis 33 of the second joint is perpendicular to the first joint axis 32 of the first joint.

[0116] The pivot angle α between the center axis 23 of the outer part 7 and the center axis 24 of the inner part 6 does not change during the rotation along the second arrow 30 that indicates the two possible directions of rotation in the second pivot plane 31 in FIG. 12. In particular the first pivot axis 26 is perpendicular to the second pivot plane 31.

[0117] In the embodiment shown in FIGS. 8-12, the defined pivot angle α.sub.0 between the center axis 24 of the outer part 7 and the center axis 24 of the inner part 6 is e.g. equal to zero degrees, however it can differ from zero and can be in particular in a range between two limit pivot angles α′ and α″ which are different from zero.

[0118] The defined pivot angle α.sub.0 and the pivot angle β.sub.0 therefore characterize a defined relative pivot position α.sub.0, β.sub.0 of the outer part 7 and the inner part 6 relative to each other which represents an intended or predetermined mounting or dismounting direction of the carrier element 3 relative to the anchoring element 9. In the defined relative pivot position α.sub.0, β.sub.0 in particular the center axis 23 of the outer part 7 and the center axis 24 of the inner part 6 can be non-coaxial.

[0119] In order to implement the kinematics described supra with the first pivot plane 26 and the second pivot plane 31, the outer part 7 can include two lobes 28a, 28b respectively protruding in parallel with each other from a base element 27 and respectively including spherical layer or spherical segment surfaces 20 which contact and envelop diametrically opposed spherical layer or spherical segment surfaces 19 at the inner part 6 so that the first pivot axis 26 runs parallel to both lobes 28a, 28b as evident in particular from FIG. 9. This defines the first pivot plane 26 which is parallel to the lobes 28a, 28b.

[0120] Advantageously it is only possible within this first pivot plane 26 to pivot the center axis 23 of the outer part 7 relative to the center axis 24 of the inner part 6 and thus change the pivot angle α in the illustrated embodiment e.g. by 22° at the most in both directions. Then the center axis 23 of the outer part 7 can assume the two limit pivot angles α′ and a″ relative to the center axis 24 of the inner part or relative to the center axis of the anchoring element 9 indicated in FIG. 12. The limit pivot angles α′ and a″ of the outer part 7 relative to the inner part 6 within the first pivot plane 26 are defined herein e.g. by the cone angle of the cone surface of the receiving section 1 of the anchoring element 9.

[0121] It is an advantage of this embodiment that only the outer part 7 is positively form locked with the inner part 6 in order to establish the defined pivot position α.sub.0 and β.sub.0 between the outer part 7 and the inner part 6 or a predetermined mounting or dismounting direction between the carrier element 3 and the anchoring element 9 e.g. by axially placing the outer part 7 onto the inner part 6 while elastically deforming the lobes 28a, 28b and establishing the disengageable form locking and pivotable connection between the outer part 7 and the inner part 6 through an elastic spring back effect of the two lobes 28a, 28b. Then the outer part 7 is rotated relative to the center axis 24 of the inner part 6 or relative to the center axis of the anchoring element 9 about the second joint axis 33 in the second pivot plane 31 in directions indicated in FIG. 12 by the second arrow 30 so that the defined pivot angle β.sub.0 is adjusted in the first pivot plane 26 defined e.g. by the lobes 28a, 28b of the outer part 7. Then the outer part 7 is rotated relative to the inner part 6 about the first joint axis 32 and within the first pivot plane 26 in one of the directions indicated by the first arrow 29 in FIG. 12, so that the center axis 23 of the outer part 7 assumes the defined pivot angle α.sub.0 with respect to the center axis 24 of the inner part 6 within the first pivot plane 26.

[0122] The sequence of the pivoting about the first joint axis 32 and the second joint axis 33 is not imperative, this means it is also possible to initially pivot about the first joint axis 32 and thereafter about the second joint axis 33 or vice versa.

[0123] Due to the mutual engagement of the inner spherical layer surfaces or spherical segment surfaces 20 at both lobes 28a, 28b and the outer spherical layer or spherical segment surfaces 19 at the inner part 6 circles 34 shown in FIG. 12 by a dashed line designate edges of contacting surface sections of the outer spherical layer or spherical segment surfaces 19 and the inner spherical layer or spherical segment surfaces 20. Then, identical retaining forces of the positively form locking or press button connection are advantageously provided irrespective of a pivot position of the lobes 28a, 28b or of the outer part about the first pivot axis 32 relative to the inner part 6.

[0124] As evident from FIG. 12, a pivoting of the outer part 7 in an imaginary pivot plane that includes the first joint axis 32 is not possible due to the geometric conditions (outer spherical layer surfaces or spherical segment surfaces 19 and inner spherical layer or spherical segment surfaces 20) between the lobes 28a, 28b and the inner part 6. Rather the first joint only includes a first rotational degree of freedom about the first joint axis 32 and the second joint only includes a second rotational degree of freedom about the second joint axis 33. This has the advantage that aligning the presumed initially mobile outer part 7 relative to the presumed stationery inner part 6 can only be performed about two joint axes 32, 33 without allowing an uncontrolled tilting of the outer part 7 relative to the inner part 6 when any rotational degree of freedom about any rotation axis is enabled like in a ball joint.

[0125] Thereafter, only e.g. the carrier element 3 has to be attached at the outer part 7 that is pivoted into the defined pivot position α.sub.0, β.sub.0, in particular by gluing. Since the inner part 6 is fixed at the anchoring element 9 and the outer part 7 is fixed at the carrier element, respectively in a defined position, this defined position is also maintained during an assembly or disassembly of the carrier element 3 and the anchoring element 9. The defined pivot position α.sub.0, β.sub.0 between the outer part 7 and the inner part 6 represents a defined or predetermined mounting or dismounting direction of the carrier element 3 relative to the anchoring element 9 in order to mount e.g. the dental anchoring system in the second anchoring type 200. During assembly the carrier element 3 is placed onto the anchoring element 9 in the mounting direction predetermined by the defined pivot position α.sub.0, β.sub.0 which brings the inner part 6 into form locking engagement with the outer part 7 by elastically deforming the two lobes 28a, 28b and then moving back spring elastic towards the inner part 6.

[0126] Vice versa, only the carrier element 3 is pulled off from the anchoring element 9 in the dismounting direction predetermined by the defined pivot position α.sub.0, β.sub.0 in order to dismount the dental anchoring system in the second anchoring type 200, wherein the inner part 6 moves out of engagement with the outer part 7 by elastically deforming the two lobes 28a, 28b which spring back thereafter.

REFERENCE NUMERALS AND DESIGNATIONS

[0127] 1 receiving section [0128] 2 anchoring section [0129] 3 carrier element [0130] 4 fastening bolt [0131] 5 cavity [0132] 6 inner part [0133] 7 outer part [0134] 8 alignment element [0135] 9 anchoring element [0136] 10 threaded bore hole [0137] 11 inner surface [0138] 12 support section [0139] 13 bolt head [0140] 14 pass through bore hole [0141] 15 shaft [0142] 16 annular cavity [0143] 17 outer surface [0144] 18 bolt [0145] 19 outer spherical layer surface [0146] 20 inner spherical layer surface [0147] 22 engagement section [0148] 23 pull off direction/center axis of outer part [0149] 24 center axis of inner part [0150] 25 rounded transition surface [0151] 26 first pivot plane [0152] 27 base element [0153] 28a lobe [0154] 28b lobe [0155] 29 first arrow [0156] 30 second arrow [0157] 31 second pivot plane [0158] 32 first joint axis [0159] 33 second joint axis [0160] 34 circle [0161] 100 dental anchoring system in the first anchoring type [0162] 200 dental anchoring system in the second anchoring type [0163] α pivot angle [0164] α′ α″ limit pivot angle [0165] β pivot angle [0166] α.sub.0 defined pivot angle [0167] β.sub.0 defined pivot angle [0168] α.sub.0, β.sub.0 defined pivot position