Insertion Kit For An Endosseous Single-Tooth Implant

Abstract

An insertion kit for an endosseous single-tooth implant includes a main body, a screw-in base, a retaining screw, a screw-in head and a retaining shaft.

Claims

1. An insertion kit for an endosseous single-tooth implant for a fixed tooth replacement, comprising: a substantially cylindrical main body (10), configured to be insertable into a bore introduced into a jaw bone, with an annular recess (16) with a positive-locking section (20) and with a bore (12) arranged coaxially relative to the annular recess (16), and which comprises apically a threading (14) for the securing of a retaining screw; a screw-in base (40), configured to be insertable into the annular recess (16) of the main body (10), with a positive-locking section (46), wherein the screw-in base (40) comprises a bore (42), which penetrates through the screw-in base (40) coaxially relative to the annular recess (16), for receiving a retaining screw (60); a retaining screw (60) with an apical outer threading (62) and a coronal screw head (66), wherein the retaining screw (60) is configured to be insertable in the bore (42) of the screw-in base and screwed into the threading (14) of the main body (10); a screw-in head (80), configured to be engageable with the screw-in base (40), and which comprises a bore (82) arranged coaxially relative to the annular recess (16) and a projection at the coronal end thereof, preferably in the form of an outer polygon (92), for a screw-in tool, and a retaining shaft (110), configured to be insertable in the bore (82) of the screw-in head (80) and which, at one end, configured to be fixable to the retaining screw (60) and, at the other end, comprises a projection for a dental angle piece, wherein the positive-locking section (20) of the main body (10) and the positive-locking section (46) of the screw-in base (40) comprise mutually complementary screw-in elements (30; 48) which, during the insertion of the screw-in base (40) in the main body (10), are made to engage with one another, and wherein the screw-in base (40) and the main body (10), in the engagement position of the mutually complementary screw-in elements, are secured in a rotationally fixed manner with respect to one another, wherein the mutually complementary screw-in elements on main body (10) and screw-in base (40) are designed as respective shape-complementary screw-in element pairs comprising inner edge-outer edge, pins-recesses, or Morse taper-Morse cone pairs.

2. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement, comprising: a substantially cylindrical main body (10), configured to be insertable into a bore introduced into a jaw bone, with an annular recess (16) with a positive-locking section (20) and with a bore (12) arranged coaxially relative to the annular recess (16), and which comprises apically a threading (14) for the securing of a retaining screw; a screw-in base (40), configured to be insertable into the annular recess (16) of the main body (10), which comprises a bore (42), which penetrates through the screw-in base (40) coaxially relative to the annular recess (16), for receiving a retaining screw (60); a retaining screw (60) with an apical outer threading (62) and a coronal screw head (66), wherein the retaining screw (60) configured to be insertable in the bore (42) of the screw-in base (40) and screwed into the threading (14) of the main body (10); a screw-in head (80), configured to be engageable with the screw-in base (40), and which comprises a bore (82) arranged coaxially relative to the annular recess (16) and a placement at the coronal end thereof, preferably in the form of an outer polygon (92), for a screw-in tool, wherein the screw-in base (40) and the screw-in head (80) are designed as a single-piece screw-in body (98), and a retaining shaft (100), configured to be insertable in the bore (82) of the screw-in head (80) and which, at one end, configured to be fixable to the retaining screw (60) and, at the other end, comprises a placement for a dental angle piece, wherein the positive-locking section (20) of the main body (10) and the positive-locking section (102) of the screw-in body (98) comprise mutually complementary screw-in elements (30; 106), which, during the insertion of the screw-in body (98) in the main body (10), are made to engage with one another, and wherein the screw-in base (40) and the main body (10), in the engagement position of the mutually complementary screw-in elements, are secured in a rotationally fixed manner with respect to one another, wherein the mutually complementary screw-in elements on main body (10) and screw-in body (98) are designed as respective shape-complementary screw-in element pairs comprising inner edge-outer edge, pins-recesses or Morse taper-Morse cone pairs.

3. An insertion kit for an endosseous single-tooth dental implant for a fixed replacement tooth according to claim 1, wherein the annular recess of the main body includes an apical guide section, the positive-locking section arranged coronally relative to the apical guide section, and a coronal end section arranged coronally relative to the positive-locking section, and wherein the screw-in base/the screw-in body includes an apical guide section, a positive-locking section and a coronal end section, which correspond to the corresponding sections of the main body.

4. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein, on the coronal end, the screw-in base comprises a positive-locking section with screw-in elements, which can be made to engage together with screw-in elements of the screw-in head, and the screw-in base and the screw-in head are secured in a rotationally fixed manner in engagement position of the mutually complementary screw-in elements, wherein the mutually complementary screw-in elements on screw-in base and screw-in head are designed as respective shape-complementary screw-in element pairs comprising inner edge-outer edge, pins-recesses or Morse taper-Morse cone pairs.

5. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the screw head of the retaining screw comprises an inner polygon and preferably an inner threading arranged in the inner polygon.

6. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the screw head of the retaining screw in the use position is sunk in the screw-in base.

7. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the retaining screw and the retaining shaft are formed as a single piece.

8. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the retaining shaft is formed as two pieces.

9. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the retaining shaft is designed so that, in the use position, the retaining shaft retains main body, screw-in base and screw-in head or main body and screw-in body in engagement.

10. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 1, wherein the mutually complementary screw-in elements on main body and screw-in base, the mutually complementary screw-in elements on screw-in base and screw-in head, and the mutually complementary screw-in elements on main body and screw-in body are formed as respective two to six shape-complementary screw-in element pairs comprising inner edge-outer edge, pins-recesses or Morse taper-Morse cone pairs, which are arranged preferably evenly spaced in circumferential direction.

11. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 10, wherein, at least between two shape-complementary screw-in element pairs, which are selected from inner edge-outer edge and pins-recesses and Morse taper-Morse cone pairs, and which arranged adjacently in circumferential direction, a positive-locking element pair in the form of a spring web-slot connection is arranged, wherein at least the slot edge, which is coaxial relative to the longitudinal axis of the main body, of at least one slot, at least in screw-in direction, comes in contact with the coaxial spring web root, which is coaxial relative to the longitudinal axis of the main body, of the corresponding spring web.

12. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 11, wherein, in each case between two adjacent screw-in element pairs, a positive locking element pair in the form of a spring web-slot connection is arranged.

13. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 11, wherein the positive-locking element pair in the form of a spring web-slot connection is arranged between two adjacent screw-in element pairs, in such a manner that, when the main body is screwed into or unscrewed from the jaw, no contact occurs between the spring web and slot, and only the slot edge, which is coaxial relative to the longitudinal axis of the main body, of at least one slot, in the rotation direction, comes in contact with the spring web root, which is coaxial with respect to the longitudinal axis of the main body, of the corresponding spring web.

14. An insertion kit for an endosseous single-tooth dental implant for a fixed tooth replacement according to claim 11, wherein the positive-locking element pair in the form of a spring web-slot connection is arranged between two adjacent screw-in element pairs, in such a manner that the slot edge, which is coaxial with respect to the longitudinal axis of the main body, comes in contact on both sides with the spring web root, which is coaxial relative to the longitudinal axis of the main body (10), of the corresponding spring web, wherein, between the two contact points, spring web and slot are spaced apart with play.

15. An insertion kit for an endosseous single-tooth implant for a fixed tooth replacement according to claim 1, wherein, on the outside, on at least one of main body, screw-in base, screw-in head or screw-in body, at least one index marking, which indicates the position of at least one screw-in element and/or the position of at least one positive-locking element pair, is present, and/or on the outside, on screw-in head or screw-in body, at least one scanbody marking is present.

16. An endosseous single-tooth implant for a fixed tooth replacement, comprising: a substantially cylindrical main body (10), configured to be insertable into a bore introduced into a jaw bone, with an annular recess (16), with a positive-locking section (20), and with a bore (12) which is open toward the coronal end thereof and arranged apically relative to the annular recess (16), and which comprises a threading section (14) arranged at the apical end in the main body for the fixation of a retaining screw, wherein the annular recess (16) includes a guide section (18), a positive-locking section (20) coronally adjoining the guide section (18), and an end section (22) coronally adjoining the positive-locking section (20), an abutment (140), configured to be insertable into the recess (16) of the main body, with a guide section (144), with a positive-locking section (146), with an end section (148), with a bore for receiving the retaining screw, and with a fastening head (152) for the tooth replacement, and a retaining screw (154), configured to be insertable into and passes through the bore of the abutment (140) and of the main body (10), wherein the positive locking section (20) of the main body (10) and the positive-locking section (146) of the abutment (140) comprise two to six mutually shape-complementary positive locking element pairs (26; 142) in the form of radially inward directed spring webs (26), which are coaxial relative to the longitudinal axis of the main body, on the main body (10), and of corresponding slots (142) with slot surfaces (141) and two slot edges (143) on the abutment (140), in the manner of a tongue and groove connection, wherein the positive-locking section (20) of the main body (10) and the positive-locking section (146) of the abutment (140) comprise two to six mutually shape complementary inner edge-outer edge pairs in the form of inner edge surfaces on the main body (10) and corresponding outer edge surfaces on the abutment (140), which in each case are designed peripherally preferably alternating with the positive-locking elements in main body (10) and abutment (140), wherein, during the insertion of the abutment (140) into the main body (10), the inner edge surfaces (30) on the main body (10) and the corresponding outer edge surfaces (145) on the abutment (140) come in contact at least partially.

17. The endosseous single-tooth implant for a fixed tooth replacement according to claim 16, wherein each slot edge, which is coaxial relative to the longitudinal axis of the main body, of the slots comes in contact with the spring edge root, which is coaxial relative to the longitudinal axis of the main body, of the corresponding spring web.

18. The endosseous single-tooth implant for a fixed tooth replacement according to claim 16, wherein, during the insertion of the abutment into the main body, the web side surfaces of each spring web on the main body and the slot surfaces of the slots on the abutment come in contact at least partially.

19. An abutment (140) for an endosseous single-tooth implant for a fixed tooth replacement according to claim 16, with a guide section (144), with a positive-locking section (146), with an end section (148), with a bore for receiving the retaining screw, and with a fastening head (152) for the tooth replacement, wherein, in the positive locking section (146) of the abutment (140), two to six, in particular three, slots (142), which are coaxial relative to the longitudinal axis of the abutment, are arranged, which have slot surfaces (141) and slot edges (143), which are designed to form a tongue and groove connection with spring webs (26) on the main body (10), wherein, in the positive-locking section (146) of the abutment (140), two to six, in particular three, outer edge surfaces (145) are arranged, which are designed for the formation of an inner edge-outer edge pair with inner edge surfaces (30) on the main body (10), and which are formed circumferentially in each case preferably alternating with the slots (142) on the abutment (140), and wherein each slot edge (143), which is coaxial relative to the longitudinal axis of the abutment, is designed so that, in use position, the slot edge (143) comes in contact with the spring web root (36), which is coaxial relative to the longitudinal axis of the main body (10), of the corresponding spring web (26), and wherein, during the insertion of the abutment (140) into the base body (10), the slot surfaces (141) on the abutment (140) and the corresponding web side surfaces (38) on the main body (10) come in contact at least partially.

Description

[0060] Below, embodiment examples of the insertion kit according to the invention and the components thereof are explained in detail in reference to the diagrammatic drawings. In the drawings:

[0061] FIG. 1A shows an embodiment example of an insertion kit according to the invention in the axial longitudinal section along the plane shown in the top view on the right; this embodiment is suitable primarily for covered healing;

[0062] FIG. 1B shows another embodiment example of an insertion kit according to the invention in the axial longitudinal section along the plane shown in the top view on the right; this embodiment allows both covered healing and also transgingival healing;

[0063] FIG. 1C shows another embodiment example of an insertion kit according to the invention in the axial longitudinal section along the plane shown in the top view on the right; this embodiment is suitable mainly for transgingival healing;

[0064] FIG. 1D shows a cross-sectional view of the embodiment example from FIG. 1C at the level of the main body-screw-in body connection in the plane B-B shown in the top view on the right, as well as a detail view thereof;

[0065] FIG. 2 shows an embodiment example of an implant main body used in the insertion kit according to the invention as shown in FIG. 1A, 1B or 1C, in the axial longitudinal section along the plane shown in the top view on the right, as well as respectively a top view from below and from above onto the main body;

[0066] FIG. 3 shows an embodiment example of a screw-in base used in the insertion kit according to the invention and as shown in FIG. 1A or 1B, in the axial longitudinal section along the plane shown in the top view on the right, as well as respectively a top view from below and from above onto the screw-in base and respectively a cross-sectional view in the planes B-B and C-C shown in the top view on the right;

[0067] FIG. 4 shows an embodiment example of a retaining screw used in the insertion kit according to the invention as shown in FIG. 1A and 1Bfor the securing of the screw-in base in the main bodyin the axial longitudinal section along the plane shown in the top view on the right, as well as respectively a top view from below and from above onto the retaining screw;

[0068] FIG. 5 shows an embodiment example of a screw-in head used in the insertion kit according to the invention as shown in FIG. 1A and 1B, in the axial longitudinal section along the plane shown in the top view on the right, as well as respectively a top view from below and from above onto the screw-in head and a cross-sectional view in the plane B-B shown in the top view on the right;

[0069] FIG. 6 shows an embodiment example of a retaining shaft used in the insertion kit according to the invention as shown in FIG. 1 in the top view, as well as respectively a top view from below and from above onto the retaining shaft;

[0070] FIG. 7 shows an embodiment example of a closure screw for closing the screw-in base and the retaining screw in the axial longitudinal section along the plane shown in the top view on the right, as well as a top view from below and from above onto the closure screw;

[0071] FIG. 8 shows an embodiment example of an abutment, which can be used with the main body according to the insertion kit according to the invention as shown in FIG. 2, in the axial longitudinal section along the plane shown in the top view on the right, as well as a top view from above onto the abutment;

[0072] FIG. 9A shows an embodiment example of a main body as used in the insertion kit according to the invention as in FIG. 1, with an abutment inserted into the main body and secured by a retaining screw in the top view as well as in the axial longitudinal section along the plane A-A in the top view;

[0073] FIG. 9B shows a cross-sectional view of the embodiment from FIG. 9A at the level of the main body-abutment connection in the plane B-B shown in the top view on the right, as well as a detail view thereof.

[0074] As diagrammatically shown in the longitudinal section in FIG. 1A, in a design, the insertion kit according to the invention comprises the main body 10, the screw-in base 40 with retaining screw 60 secured therein, the screw-in head 80 sitting on the screw-in base as well as the, here single-piece, retaining shaft 110, which penetrates into the screw-in head 80, and which is secured in the retaining screw 60 in the screw-in base 40.

[0075] In the embodiment of the insertion kit according to the invention shown in FIG. 1A, via the retaining shaft 110 and the tool not represented in the drawing, for example, a polygonal socket, which is stuck onto the retaining shaft 110 and encloses the outer polygon 92 with positive locking, the torque is transmitted from the dental angle piece to the main body. For this purpose, the retaining shaft 110 is provided at the apical end thereof with a threading, which can be screwed into the retaining screw 60, or which can be secured there by means of a bayonet closure. The retaining shaft 110 is formed, for example, in such a manner that, by means of a possibly conical collar flange 114, which is provided in the middle section of the retaining shaft 110, and which lies coronally on the end section of the screw-in head 80 with the outer polygon 92, the screw-in head 80 is retained against the screw-in base 40 and, with the screw-base 40, it forms apically in the area of the front surface 90 a positive-locking and/or frictional locking connection. The screw-in base 40, in its turn, is secured in the main body 10 via the retaining screw 60, and secured against circumferential twisting by the screw-in elements arranged in the positive-locking area of the main body-screw-in base pair. The position of a screw-in element can be indicated via the index marking 109. The individual components of the insertion kit according to the invention are described in further detail below.

[0076] The insertion kit according to the invention allows the implantologist to screw the insertion kit, which has been removed from the packaging and fixed to the dental angle piece, into the bore in the jaw of the patient and, depending on conditions at the implantation site, to start the preparations for the one-phase or two-phase healing. For this purpose, by means of the dental angle piece, a torque is transmitted via the retaining shaft 110 and the polygon 92 onto the main body and enables a simple screwing of the main body into the jaw, without the need for other assemblies for this purpose. After the end of the process of screwing the main body into the jaw, the retaining shaft 110 can, if necessary, be unscrewed from the threading of the retaining screw 60. For this purpose, on the retaining shaft, a placement 118 for tools such as an open-end wrench can be provided. The screw-in head 80 can be fixed via jamming or screw elements on the screw-in base 40 or via an additional retaining screw 94, as shown in FIG. 1B, on the retaining screw 60 and, depending on the decision of the implantologist, can be removed from the screw-in base for the one-phase or two-phase healing.

[0077] If the implantologist decides to use one-phase healing, the screw-in head 80 can remain on the screw-in base 40, and can itself be used as retainer for a temporary tooth replacement, as a kind of temporary abutment, or as a scanbody. Here, for the use as temporary abutment, the polygon 92, for example, a hexagon, arranged at the coronal end of the screw-in head, can be detached at the annular slot 96 under the polygon 92 after the removal of the retaining shaft 110, and the remaining lower portion of the screw-in head 80 can be used for the fixation of such a temporary tooth replacement. The screw-in head 80 can advantageously form a positive-locking and/or frictional locking connection with the screw-in base 40. Here, this positive-locking connection can also be designed so that the screw-in head 80 is stuck via the positive-locking elements on the screw-in base 40 or can be fixed via the additional retaining screw 94.

[0078] As explained, the screw-in base 40 can be fixed in the main body via the retaining screw 60. Here, the retaining screw is provided with an apical threading 62, a middle section and a screw head 66. In the screw head 66, a fixation for the retaining shaft 110 or for a second retaining screw 94 in the manner of an inner threading can be provided, into which the retaining screw 110 can be screwed via the threading 112 provided in the apical end thereof or via the second retaining screw 94 as shown in FIG. 1B. The retaining screw 94 enables the use of a shorter retaining shaft 110 if the jaw conditions require this. Alternatively to a threaded connection between the retaining screw 60 and the retaining shaft 110, a snap-in connectionnot representedin the manner of a bayonet connection can be provided, which engages in the screw head when the retaining shaft 110 is introduced, and which fixes the retaining shaft 110 via the retaining screw 60 on the screw-in base 40. A positive-locking connectionnot representedbetween retaining shaft 110 and screw-in head 80 can also be implemented via a polygon connection, in which the bore in the screw-in head, at least in a section, is implemented in the manner of an inner polygon, to which a corresponding section of the retaining shaft 110 is matched in the manner of an outer polygon. The outer polygonal section of the retaining shaft, for example, in the shape of a hexagon, can extend nearly to the apical end of the retaining shaft, wherein, at the apical end of the retaining shaft, an annular slot is provided, in which an O-ring can be mounted, which engages in a corresponding annular slot in the screw head 66 of the retaining screw 60 and thus can form a snap-in connection.

[0079] FIGS. 1B and 1C show other embodiments of an insertion kit according to the invention. Here, FIG. 1B, as also shown diagrammatically in the longitudinal cross section in FIG. 1A, shows the insertion kit according to the invention in a design with main body 10, the screw-in base 40 with retaining screw 60 secured therein, the screw-in head 80 sitting on the screw-in base with second retaining screw 94 secured therein, as well as the single-piece retaining shaft 110, which penetrates through the screw-in head 80 and is secured in the retaining screw 94 in the screw-in base 40.

[0080] FIG. 1C diagrammatically shows, similarly to FIG. 1A, in the longitudinal section, another embodiment of the insertion kit according to the invention in a design with main body 10 and with a single-piece screw-in body 98 (consisting of screw-in base 40 and screw-in head 80) with retaining screw 60 secured therein as well as the single-piece retaining shaft 110, which penetrates through the screw-in body 98 and is secured in the retaining screw 60. In a variant of this embodiment, which is not represented, the retaining shaft 110 can also be secured in a second retaining screw 94. As shown in the detail drawing for FIG. 1C and the enlarged representation thereof according to FIG. 1D, the screw-in elements (30; 106) on main body 10 and screw-in body 98 are designed so that the torque transmission from the screw-in body 98 to the main body 10and correspondingly also in the case of torque transmission from the screw-in base 40 to the main body 10, or from the screw-in head 80 to the screw-in base 40, as explained belowis made possible without contact between the spring webs (26, 55) and slots (50, 91). For this purpose, the spring webs (26, 55) and slots (50, 91) in each case are designed with sufficient play with respect to one another, so that, during the rotation, no contact is made between web (26, 55) and slot (50, 91), and thus the webs (26, 55) and slots (50, 91) are protected against mechanical damage. This can be supported furthermore in that the slot edges of the slots and the webs and the lateral surfaces thereof are designed so that, particularly during the screw-in movement, the slot edges which are coaxial relative to the longitudinal axis of main body are braced against the web side surfaces 38 in the area of the web root 36, and contact between the radial end of the spring web and the slot is avoided, and, in particular, shearing off of the spring web is prevented in the manner of an impact protection, is prevented.

[0081] In principle, when using a second retaining screw 94, it is advantageous if the head of this retaining screw 94 ends beneath the plane of annular slot 96, so that a detachment of the polygon 92 without impediment by this second retaining screw 94 is possible.

[0082] FIG. 1D shows a cross-sectional view of the embodiment example from FIG. 1C at the level of the main body-screw-in body connection in the plane B-B shown in the top view on the right, as well as an enlarged detail view thereof. The screw-in element pairsin the preferred embodiment three screw-in element pairsare here designed in the form of inner edge surfaces 30 on the main body 10, which come in contact with the outer edge surfaces 106 on the screw-in body 98 and allow the transmission of the torque from the screw-in tool to the main body 10. Here, between every two screw-in element pairs (30, 106), a positive-locking element pair (26, 105) in the form of a spring web-slot connection is arranged, wherein the slot edges 108 lie on the spring web root 36 of the spring web 26 on the main body, and, between the bilateral contact points, there is no contact between slot and spring web, in order to prevent damaging the web particularly when screwing in the main body. This detail representation according to FIG. 1D in principle also applies to the screw-in element pairs between main body and screw-in base or between screw-in base and screw-in head, wherein, in the latter case, contact between web surfaces and slot surfaces is also permissible.

[0083] For reasons pertaining to manufacturing and also to reusability, in all the components with screw-in element pairs of the insertion kit according to the invention in the form of a spring web-slot connection (26, 50; 26, 105; 55, 91) between two adjacent screw-in element pairs (30, 48; 56, 88; 30, 106), the positive-locking element pair is preferably arranged in the positive-locking section in such a manner that, when the main body is screwed in or unscrewed from the jaw, there is no contact between the spring web and slot, and only the slot edge (51; 89; 108), which is coaxial relative to the longitudinal axis of the main body, of at least one slot (50; 91; 105), comes in contact, in rotation direction, with the spring web root (36; 57), which is coaxial relative to the longitudinal axis of the main body (10), of the corresponding spring web (26; 55).

[0084] Here, the positive-locking element pair in the form of a spring web-slot connection (26, 50; 26, 105; 55, 91) between two adjacent screw-in element pairs (30, 48; 56, 88; 30, 106) is preferably arranged in such a way that the slot edge (51; 89; 108), which is coaxial relative to the longitudinal axis of the main body, comes in contact on both sides with the spring web root (36; 57), which is coaxial relative to the longitudinal axis of the main body (10), of the corresponding spring web (26; 55), wherein, between the two contact points, spring web and slot are spaced apart with play.

[0085] As shown in FIG. 2, the main body, 10 at its apical end shown at the bottom in FIG. 1, is designed closed and has a blind bore 12, which is open toward its coronal end located at the top in FIG. 1, with an inner thread 14 at the apical end of the blind bore 12. A retaining screw 60, not shown in the drawing in FIG. 2, for the screw-in base 40 or an abutment 140 can be screwed into the inner threading. In coronal direction, a hollow cylindrical annular recess 16 having a greater inner diameter than the inner threading 14 adjoins the inner threading 14 of the main body 10. In the form represented, the annular recess 16 has three areas 18; 20; 22. Thus, the annular recess 16 according to FIG. 2 comprises a guide section 18, which coronally adjoins the inner threading 14. In coronal direction, a positive-locking section 20 adjoins the guide section 18 of the annular recess 16, positive-locking section, which has a greater inner diameter than the guide section 18 and which, at least in sections, can comprise a conical inner wall within the embodiment according to FIG. 2three radially inward directed spring webs 26. The spring webs 26 are formed so that they correspond, in the manner of a tongue and groove connection, to the slots 142 on the abutment 140 shown in FIG. 8, and they can preferably have dimensions such that they extend over the entire axial length of the positive-locking section 20. The spring webs 26 can be formed by machine-operated mechanical or electrochemical processing from the main body.

[0086] According to FIG. 2, in the positive-locking section 20, in each case an inner edge surface 30 as screw-in element is preferably provided between every two spring webs 26, inner edge surface with which in each case a corresponding, shape-complementary outer edge surface 48 on the screw-in base 40, shown in FIG. 3, as screw-in element can come in contact during the process of screwing the main body 10 into the jaw. In addition, a screw-in element formed as outer polygonal surface can in each case be formed on the screw-in base or on the screw-in body, in such a way that the planar surface of the outer edge surface, which can also be formed so that it projects radially, can come in contact, at least in screw-in direction, by means of a slot edge 51/108, during the screwing in of the main body into the jaw on the corresponding web side surface 38/59, with the web root 36/57, but not with the web tip, and in this manner it supports the transmission of the torque to the main body, without the possibility of damaging the web tip during the screwing in. Such an interaction/bracing/abutment between spring web root and slot edge exists in each screw-in element pair used in the insertion kit according to the invention, in order to support the transmission of the torque in rotation direction, when radial spring webs/slots are arranged between two screw-in element pairs.

[0087] For mechanical and geometric reasons, the use of three screw-in elements such as, for example, inner edge surfaces on the main body 10, is advantageous; however, it is also possible to provide two to six screw-in elements such as inner edge surfaces, on which corresponding outer edge surfaces 48 of the screw-in base engage as screw-in elements, as long as during the insertion of the screw-in base 40 the positive-locking elements on main body 10 and screw-in base 40 can reliably be made to engage. In the embodiments according to the invention, between the inner edge surfaces, in each case protrusions such as spring webs 26 can be provided in appropriate number, wherein, for reasons of improved force transmission, the spring webs and the inner edge surfaces can extend axially over the entire axial length of the positive-locking section and enable the torque transmission via the shape-complementary outer edge surfaces of the screw-in base.

[0088] The screw-in base shown in FIG. 3 comprises coronally a support collar 54, adjoined apically by an end section 52, which can comprise a circumferential slot, not represented, for the reception of a sealing means such as an O-ring, not represented, in the end section 52, a positive-locking section 46 and a guide section 44. In the positive-locking section 46, several screw-in elements each in the form of outer polygonal surfaces 48 and axially extending slots 50 are provided, each corresponding in shape, arrangement and number thereof respectively to the screw-in elements and the spring webs 26 in the positive-locking section 20 of the main body 10. In the screw-in base 40 arranged in the main body, the slots 50 are arranged with play preferably in the center relative to the spring webs 26 in the main body 10 and preferably without contact, in order to prevent damaging the spring webs 26, while the screw-in elements 30 on the main body 10 are in positive-locking and/or frictional locking engagement with the screw-in elements 48 on the screw-in base 40, in order to enable torque transmission.

[0089] During the insertion of the screw-in base 40, which is provided with an axial longitudinal bore 42, whose inner diameter corresponds approximately to the outer diameter of the retaining screw [60 in FIG. 4], not shown in FIG. 2, into the main body 10, the guide section 44 engages in the guide section 18 of the annular recess 16, wherein the cylindrical lateral surface of the guide section 44 comes in contact with the inner cylindrical lateral surface of the guide section 18 of the main body 10.

[0090] When the screw-in base is inserted, the end section 52 of the screw-in base 40 is arranged in the end section 22 of the main body 10. The spring webs 26 are positioned in the slots 50, while the support collar 54 can come in contact with the front edge 28. Thus, the screw-in base 40 is secured sealingly and via the screw-in element pairs [30; 48] with positive locking to the main body 10.

[0091] By means of the retaining screw 60, shown in FIG. 4, which passes through the screw-in base 40, and which can be screwed into the inner threading 14 of the main body 10, the screw-in base can be connected in a rotationally fixed manner to the main body 10. In order to facilitate the removal of the screw-in base 40 from the main body 10, for example, when the abutment 140 is to be inserted, it is possible to provide an inner threading in the bore 42 passing through the screw-in base 40, into which, after the removal of the retaining screw, an impression post, not represented, with outer threading can be screwed in, which is braced with the apical end thereof against the inner threading 14 of the main body. During the screwing in of the impression post, the screw-in base 40 can then be coronally lifted from the main body 10 and removed.

[0092] In the coronal end section on the support collar 54, the screw-in base 40 comprises on the inner side screw-in element 56, which can be designed as inner polygonal surfaces 56, and which can form a positive-locking connection with the outer polygonal surfaces 88 in the positive-locking section 86 on the screw-in head 80. In this way, the transmission of the torque from the angle piece via the retaining shaft 110 and the screw-in head 80 to the screw-in base 40 and the main body 10 can occur and enable the screwing of the insertion kit into the jaw. Here too, for mechanical and constructive reasons, the use of three inner edge surfaces 56 on the screw-in base 40 is advantageous; however, two to six inner edge surfaces can also be provided, on which corresponding shape-complementary outer edge surfaces 88 of the screw-in head 80 engage as screw-in elements, as long as the screw-in elements [56; 88] on the screw-in base 40 and screw-in head 80 can reliably be made to engage.

[0093] As shown in FIG. 4, the retaining screw 60 comprises an apically arranged threading 62, a middle section and a screw head 66, which has an apical lower section 68 with cone collar 64 and a coronal upper section 70. The lower section 68 has a greater radial diameter compared to the upper section 70 and, during the screwing in of the retaining screw 60 it presses the screw-in base 40 against the main body 10 by means of the cone collar 64 via the conical section 58. Between the upper section 70 and the screw-in base 40, a cylindrical slot can thus be formed radially between screw head 66 and screw-in base, into which a tubular cylindrical section 84 of the screw-in head 80 can engage, thus enabling a guiding of the screw-in head 80 in the screw-in base 40. In the tubular cylindrical section 84 of the screw-in head, locking elements can be provided, which, with appropriately corresponding locking elements on the screw-in base 40 and/or on the screw head 66 of the retaining screw 60, enable a securing of the screw-in head on the screw-in base 40 already without retaining shaft 110 or second retaining screw. In the screw head 66, an inner hexagonal section (hexagonal socket) is provided, which is additionally provided with an inner threading. By means of a hexagonal socket wrench, the retaining screw 60 can be unscrewed from the main body 10, to make possible the removal of the screw-in base 40 and the insertion of an abutment 140 into the annular recess 16 of the main body. The outer threading 112 of the retaining shaft 110 or of a second retaining screw can be screwed into the inner threading in the inner hexagonal section of the screw head 66, so that the screw-in head 80 can be fixed on the screw-in base 40.

[0094] According to FIG. 5, on the apical end, the screw-in head 80 comprises the front surface 90, which, in the installed position on the front surface, is in contact with the support collar 54 of the screw-in base 40. In the installed position, the tubular cylindrical section 84 engages between the screw head 66 and the coronal support collar 54 of the screw-in base 40, and the screw-in elements formed as outer polygonal surfaces 88 in the positive-locking section 86 form a positive-locking/frictional locking connection with the screw-in elements formed as inner polygonal surfaces 56 on the screw-in base 40. Thus, the transmission of the torque can occur from the angle piece via the retaining shaft 110 and via the polygon 92, such as a hexagon, on the screw-in head 80 to the screw-in base 40 and thus to the main body 10. Here, the polygon 92 can be enclosed by an inner polygon provided on the screw-in toolnot represented in the figures, in the manner of a socket wrench socket, and thus enable the force transmission from the tool to the screw-in head 80.

[0095] For mechanical and geometric reasons, the use of three screw-in element pairs (56; 88) is advantageous during the force transmission from screw-in head 80 to screw-in base 40; however, two to six screw-in element pairs can also be provided, in which in each case corresponding outer edge surfaces 88 of the screw-in head 80 as screw-in elements engage on inner polygonal surfaces 56 of the screw-in base. Instead of the polygonal connection, other positive-locking connections can also be formed in principle, for example, by the formation of pins/coaxial protrusions on a component and corresponding recesses on the other component.

[0096] FIG. 6 shows, in a top view, the retaining shaft 110 with apical threading section 112, collar flange 114 in the middle section of the retaining shaft 110 as well as placement 116 for an angle piece and a tool placement 118. For example, the retaining shaft 110 can be designed in such a manner that, by means of the collar flange 114, which is provided in the middle section of the retaining shaft 110, and which is in contact with the end section of the screw-in head 80, the screw-in head 80 is retained against the screw-in base 40 or the single-piece screw-in body 98 is retained against the main body 10 with frictional locking and/or positive locking, and a positive-locking and/or frictional locking connection is formed by the screw-in head 80 with the screw-in base 40 in the area of the front surface 90 and of the support collar 54 or by the single-piece screw-in body 98 with the main body 10.

[0097] As shown in FIG. 1A, the retaining shaft 110 can also be formed in a two-piece form, wherein the lower section can be designed in the form of a second retaining screw 94, which, when screwed into the retaining screw 60, applies the screw-in head 80 with the collar flange 114 against the screw-in base.

[0098] FIG. 7 shows a closure screw 120 with threading 122 and inner hexagon 124 for the placement of a hexagonal wrench by means of which the closure screw 120 can be screwed into the threading in the inner hexagon 72 of the retaining screw 60. By means of the closure screw, the screw-in base 40 can be closed, if the implantologist intends to use two-phase healing, and the forming tissue grows over the main body.

[0099] Thus, in one design, the insertion kit according to the invention includes the main body 10, the screw-in base 40 with retaining screw 60 secured therein, the screw-in head 80 sitting on the screw-in base, as well as the retaining shaft 110, which penetrates through the screw-in head 80, and which is secured in the retaining screw 60 in the screw-in base 40 directly or via a second retaining screw.

[0100] The abutment 140 shown as an example in FIG. 8 is used via the fastening head 152 for the fastening for a fixed tooth replacement, which is not shown. The fastening head 152 can be matched here to the individual spatial situation existing at the implantation site in the jaw. and can be shaped conically, inclined and/or convexly. In use position, beneath the sealing flange 150, which can be put on the front edge 28 of the main body 10, the abutment 140 comprises, in apical direction, an end section 148, which can comprise a circumferential slot, not represented, for the reception of a sealing means, such as an O-ring, not represented, in the end section 148, apically thereto a positive-locking section 146 and a guide section 144. In the positive-locking section 146, a number of axially extending slots 142 are provided, which correspond in shape and arrangement but not necessarily in number to the spring webs 26 in the positive-locking section 20 of the main body 10. In the inserted state, the slots 142 are engaged with the spring webs 26, while the screw-in elements 30 on the main body 10 may also not be in contact, but preferably rest on the abutment 140. Preferably, at least the slot edge 143 is supported in the screw-in direction on the web root 36 of the spring web 26 on the main body 10. In this manner, it is reliably achieved that the spring webs are not sheared off due to the rotation movement. Details of the main body-abutment connection are shown in FIG. 9B.

[0101] During the insertion of the abutment 140, which is provided with an axial longitudinal bore, the inner diameter of which corresponds approximately to the outer diameter of the retaining screw not shown in FIG. 2 [60 in FIG. 4], into the main body 10, the guide section 144 engages in the guide section 18 of the annular recess 16 of the main body 10, wherein the cylindrical lateral surface of the guide section 144 comes in contact with the inner cylindrical lateral surface of the guide section 18 of the main body 10.

[0102] The end section 148 of the abutment 140 can be arranged with tight fit in the end section 22 of the main body 10. The spring webs 26 engage in the slots 142, while the sealing flange 150 comes in contact with the front edge 28. Thus, the abutment 140 is secured sealingly and with positive locking in a rotationally fixed manner to the main body 10.

[0103] By means of a retaining screw passing through the abutment 140, which can correspond to the retaining screw 60 and be screwed into the inner threading 14 of the main body 10, the abutment 140 can be connected in a rotationally fixed manner to the main body 10. In order to facilitate the removal of the abutment 140 from the main body 10, in the bore passing through the abutment, an inner threading, not represented in FIG. 8, can be provided, into which, after the removal of the retaining screw, an impression post with outer threading, which is not represented, can be screwed, which is supported by its apical end on the inner threading 14 of the main body. When the impression post is screwed in, the abutment 140 is then lifted coronally out of the main body 10 and can be removed.

[0104] The embodiment example of a main body 10 shown in FIG. 9A, which is in the insertion kit according to the invention as shown in FIG. 1, with an abutment 140 inserted into the main body and secured with retaining screw 154, in the top view as well as in the axial longitudinal section in the top view along the plane A-A, is further explained in the enlarged cross-sectional view according to FIG. 9B in the plane B-B shown in the top view on the right, as well as in the detail view in FIG. 9B.

[0105] As shown there, the positive-locking section (20) of the main body (10) and the positive-locking section (146) of the abutment (140) comprise two to six mutually shape-complementary positive-locking element pairs (26; 142) in the form of radially inward directed spring webs (26), coaxial relative to the longitudinal axis of the main body, on the main body (10) and corresponding slots (142) with slot surfaces (141) and two slot edges (143) on the abutment (140) in the manner of a tongue and groove connection, wherein the positive-locking section (20) of the main body (10) and of the positive-locking section (146) of the abutment (140) comprise two to six mutually shape-complementary inner edge-outer edge pairs in the form of inner edge surfaces on the main body (10) and corresponding outer edge surfaces on the abutment (140), which respectively are formed peripherally preferably alternatingly with the positive-locking elements in main body (10) and abutment (140). Here, the inner edge surfaces (30) on the main body (10) and the corresponding outer edge surfaces (145) on the abutment (140) come at least partially in contact during the insertion of the abutment (140) into the main body (10).

[0106] Furthermore, here, in particular, each slot edge (143) of the slots (142), which is coaxial relative to the longitudinal axis of the main body, can come in contact with the spring web root (36), which is coaxial relative to the longitudinal axis of the main body, of the corresponding spring web (26).

[0107] The web side surfaces (38) of each spring web (26) on the main body (10) and the slot surfaces (141) of the slots (142) on the abutment (140) come at least partially in contact during the insertion of the abutment (140) into the main body (10).

[0108] Thus, the invention also relates to an abutment (140) for an endosseous single-tooth implant for a fixed tooth replacement according to any one of claims 14-16, with a guide section (144), with a positive-locking section (146), with an end section (148), with a bore for receiving the retaining screw, and with a fastening head (152) for the tooth replacement,

[0109] wherein, in the positive locking section (146) of the abutment (140), two to six, in particular three, slots (142), which are coaxial relative to the longitudinal axis of the abutment, are arranged, which have slot surfaces (141) and slot edges (143), which are designed to form a tongue and groove connection with spring webs (26) on the main body (10),

[0110] wherein, in the positive-locking section (146) of the abutment (140), two to six, in particular three, outer edge surfaces (145) are arranged, which are designed for the formation of an inner edge-outer edge pair with inner edge surfaces (30) on the main body (10), and which are formed circumferentially in each case preferably alternating with the slots (142) on the abutment (140), and

[0111] wherein each slot edge (143), which is coaxial relative to the longitudinal axis of the abutment, is designed so that, in use position, the slot edge (143) comes in contact with the spring web root (36), which is coaxial relative to the longitudinal axis of the main body (10), of the corresponding spring web (26), and

[0112] wherein, during the insertion of the abutment (140) into the base body (10), the slot surfaces (141) on the abutment (140) and the corresponding web side surfaces (38) on the main body (10) come in contact at least partially,

[0113] as well as the substantially cylindrical main body (10) corresponding thereto, which can be inserted into a bore introduced into a jaw bone, with an annular recess (16) with a positive-locking section (20) and with a bore (12) arranged coaxially relative to the annular recess (16) and which comprises apically a threading (14) for the securing of a retaining screw.

LIST OF REFERENCE NUMERALS

[0114] 10 Main body

[0115] 12 Bore

[0116] 14 Inner threading

[0117] 16 Annular recess

[0118] 18 Guide section

[0119] 20 Positive-locking section

[0120] 22 End section

[0121] 26 Web

[0122] 28 Front edge

[0123] 30 Screw-in element/inner polygonal surface

[0124] 32 Wall

[0125] 34 Chip flute

[0126] 36 Web root

[0127] 38 Web side surface

[0128] 40 Screw-in base

[0129] 42 Bore with inner threading section

[0130] 44 Guide section

[0131] 46 Positive-locking section

[0132] 48 Screw-in element/outer polygonal surface

[0133] 50 Slot

[0134] 51 Slot edge

[0135] 52 End section

[0136] 54 Support collar

[0137] 55 Spring web

[0138] 56 Screw-in element/inner polygonal surface

[0139] 57 Spring web root

[0140] 58 Conical section (inner)

[0141] 59 Spring web side surface

[0142] 60 Retaining screw

[0143] 62 Outer threading

[0144] 64 Cone collar

[0145] 66 Screw head

[0146] 68 Lower section

[0147] 70 Upper end section

[0148] 72 Inner hexagon with inner thread

[0149] 80 Screw-in head

[0150] 82 Bore

[0151] 84 Guide section

[0152] 86 Positive-locking section

[0153] 88 Screw-in element/outer polygonal surface

[0154] 89 Slot edge

[0155] 90 Front surface

[0156] 91 Slot

[0157] 92 Outer polygon such as a hexagon, for example

[0158] 94 Second retaining screw

[0159] 96 Annular slot

[0160] 97 Scanbody marking

[0161] 98 Screw-in body

[0162] 100 Apical guide section

[0163] 102 Positive-locking section

[0164] 104 Coronal end section

[0165] 105 Slot

[0166] 106 Screw-in element/outer polygonal surface

[0167] 107 Spring web root

[0168] 108 Slot edge

[0169] 109 Index marking

[0170] 110 Retaining shaft

[0171] 112 Outer threading

[0172] 114 Collar flange

[0173] 116 Angle piece placement

[0174] 118 Placement

[0175] 120 Closure screw

[0176] 122 Threading

[0177] 124 Inner hexagon

[0178] 140 Abutment

[0179] 141 Slot surfaces

[0180] 142 Slot

[0181] 143 Slot edge

[0182] 144 Guide section

[0183] 145 Outer polygonal surface

[0184] 146 Positive-locking section

[0185] 148 End section

[0186] 150 Sealing flange

[0187] 152 Fastening head

[0188] 154 Retaining screw