Secondary part, set, dental implant, gingiva former, impression part, dental implant system, and method for producing an implant

Abstract

The secondary part (17), for securing on and/or in a dental implant, is suitable for receiving a tertiary part. The secondary part (17) has a secondary-part body (22) with a recess (21) on the inside, and a secondary-part screw (20) receivable or received in the recess. The secondary part (17) has a screwing-in mechanism in the form of a contour for receiving a screwing-in tool for screwing the dental implant, connected to the secondary part (17), into a jawbone.

Claims

1. A dental implant for insertion into a jawbone, for use with a secondary part for attachment to a dental implant and suitable for receiving an auxiliary part or a tertiary part, wherein the secondary part comprises: a secondary-part body with a recess on an inside, a secondary-part screw being able to be accommodated within the recess, wherein the secondary part has a screwing-in mechanism in the form of a contour for receiving a screwing-in tool, for screwing in the dental implant into a jawbone, if said dental implant is connected to the secondary part, wherein at least the secondary-part screw has a self-retaining structure for engaging with the screwing-in tool, and the self-retaining structure is formed by a resilient head, and wherein an outside of the secondary-part body is formed in such way that during intended use of the secondary part, the outside of the secondary part conically tapers inwardly, at least in part, at a coronal end region on which the auxiliary part or the tertiary part can be received, such that the secondary-part body has a coronal cone extending partially in the circumferential direction, wherein the angle between the longitudinal axis of the secondary-part body and the conical portion is between 5 and 15, for use with a set comprising the dental implant and the secondary part, the dental implant comprising an external thread with a thread root for anchoring the dental implant in the jawbone, wherein the thread root has at least one elevation extending from the thread root and being located between two adjacent thread flanks, and wherein at least two cutting grooves are arranged in the area of the external thread, wherein the cutting grooves are formed as twisted cutting grooves, and in that at least one short cutting groove and at least one long cutting groove is provided, wherein the short cutting groove is shorter than the long cutting groove, and wherein the short cutting groove extends from the apical end and runs across the apical area, starting from the apical end.

2. The dental implant according to claim 1, wherein the long cutting groove along the longitudinal axis of the dental implant runs across at least the entire external thread.

3. The dental implant according to claim 1, wherein the external thread covers at least 85% of the length of the dental implant.

4. The dental implant according to claim 1, wherein the dental implant has a cylindrical shape in a coronal area directed towards the coronal end.

5. The dental implant according to claim 1, wherein the dental implant, in an apical area directed towards the apical end, tapers conically towards the apical end.

6. The dental implant according to claim 5, wherein said dental implant is designed as a truncated cone.

7. The dental implant according to claim 1, wherein the short cutting groove runs across half the length of the external thread.

8. The dental implant according to claim 1, wherein the at least one short cutting groove includes an end directed towards the coronal end of the implant, and wherein a groove distance parallel to the longitudinal axis of the dental implant from said end of the groove to the coronal end is in the range of 3.5 mm to 4.5 mm.

9. The dental implant according to claim 1, wherein at the thread root has at least two elevations arranged between two adjacent thread flanks of the external thread, in such a way that three channels are arranged at the thread root between the two adjacent thread flanks.

10. The dental implant according to claim 1, wherein the diameter of the at least one elevation corresponds to the diameter of a drilling tool used to insert the dental implant.

11. The dental implant according to claim 1, wherein the at least one elevation is arranged parallel to a thread flank of the external thread.

12. The dental implant according to claim 1, wherein the at least one elevation in a direction perpendicular to the longitudinal axis of the dental implant is smaller than the two adjacent thread flanks.

Description

(1) The invention is explained in more detail below by reference to the drawings and in illustrative embodiments, without limiting the invention to these. In the drawings:

(2) FIG. 1 shows a perspective view of a dental implant according to the invention from above;

(3) FIG. 2 shows a side view of the dental implant according to the invention from FIG. 1;

(4) FIG. 3 shows a cross section through a dental implant according to the invention from FIG. 1, illustrating the outline of the hollow space of the dental implant;

(5) FIG. 4 shows a cross section through the dental implant as shown in FIG. 3, with an assembled secondary part according to the invention;

(6) FIG. 5 shows a side view of a secondary part according to the invention cut open parallel to the longitudinal axis of the secondary part, and with a secondary-part screw inserted;

(7) FIG. 6 shows a schematic view of a dental implant inserted in the jawbone, with secondary part, gingiva former, and tool for removing the gingiva former;

(8) FIG. 7 shows an enlarged detail of the neck area of the secondary part according to FIG. 5, with a received gingiva former;

(9) FIG. 8 shows a side view of a cut-open gingiva former, with a tool for handling the gingiva former;

(10) FIG. 9 shows a side view of an impression part according to the invention;

(11) FIG. 10 shows a side view of the cut-open impression part according to FIG. 9;

(12) FIG. 11 shows a perspective view of the impression part according to the invention from FIG. 10;

(13) FIG. 12 shows a schematic view of a jawbone with soft tissue and drilling tool;

(14) FIG. 13 shows a schematic view of the jawbone with soft tissue according to FIG. 12, with a dental implant according to the invention received in a drilled hole, and with a secondary part according to the invention;

(15) FIG. 14 shows a schematic view of the jawbone with soft tissue according to FIG. 13, with an additional gingiva former;

(16) FIG. 15 shows a schematic view of the jawbone with soft tissue according to FIG. 13, with a received impression part according to the invention;

(17) FIG. 16 shows a schematic view of a package according to the invention containing a pre-assembled set according to the invention;

(18) FIG. 17 shows a schematic view of a dental implant system according to the invention comprising the set according to the invention and a drilling tool.

(19) In FIG. 1, a dental implant 1 according to the invention is shown from above in a perspective view.

(20) The dental implant 1 has an external thread 2 for anchoring the dental implant 1 in a jawbone. Cutting grooves (not shown in detail here) are arranged in the external thread 2.

(21) The dental implant 1 has a coronal end 7, from which a hollow space 14 of the dental implant extends in part as far as the apical end (not shown here).

(22) The hollow space 14 of the dental implant comprises a cone portion 15, a rotation-securing portion 16 and an internal thread 18. A secondary part can be received at least partially in the hollow space 14 of the dental implant.

(23) In FIG. 2, the dental implant 1 according to FIG. 1 is shown in a side view.

(24) Identical reference signs designate identical features in all of the figures and are therefore only explained again as and when necessary.

(25) Between the coronal end 7 and the area with the external thread 2, the dental implant 1 has a cylindrical area 11.

(26) The external thread 2 is designed as a single-start thread and, between adjacent thread flanks 13, has two peripheral elevations 4, which extend substantially parallel to the thread flanks 13 of the external thread 2. In this way, three channels 12 form between adjacent thread flanks 13. The external thread 2 has a thread root 3.

(27) The dental implant 1 has a coronal area 8, which is directed towards the coronal end 7 and which is substantially cylindrical. Moreover, the dental implant 1 has an apical area 10 which is directed towards an apical end 9 and which tapers substantially conically to the apical end 9. At the apical end 9, the apical area 10 is designed as a truncated cone.

(28) The dental implant 1 according to FIG. 2 has an implant length L of approximately 13 mm, wherein the external thread 2 covers approximately 91% of the length of the dental implant.

(29) Two short cutting grooves 5 and two long cutting grooves 6 are arranged in the external thread 2. Only one short cutting groove 5 and one long cutting groove 6 are visible in the present view.

(30) The short cutting groove 5 has a groove distance N from the coronal end of approximately 4 mm.

(31) A groove angle w between the longitudinal axis A of the implant and the short cutting groove 5 is ca. 4. The long cutting groove 6 has the same angle to the longitudinal axis A of the implant.

(32) In FIG. 3, the dental implant 1 is shown in the view according to FIG. 2, but in FIG. 3 the illustration has been chosen such that the inner contour of the hollow space of the dental implant is visible. Starting from the coronal end 7 and proceeding towards the apical end, the hollow space 14 of the dental implant has the cone portion 15, the rotation-securing portion 16 and the internal thread 18.

(33) FIG. 4 shows the dental implant 1 according to FIG. 3. A secondary part 17 with a secondary-part body 22 is received in the dental implant 1. The dental implant 1 and the secondary part 17 are pre-assembled by means of a secondary-part screw, which is only partly visible here, and, in the pre-assembled state, they form a set 45 according to the invention.

(34) On the outside, the secondary-part body 22 has an anti-twist protection 19 for an auxiliary part or tertiary part that is to be received.

(35) In FIG. 5, a secondary part 17 according to the invention is shown in a side view, the secondary-part body 22 being cut open.

(36) On the inside, the secondary-part body 22 comprises a recess 21 for a secondary-part screw 20. The secondary-part screw 20 has a screw head 23. The screw head 23 is designed as an external hexagon, which functions as a screw contour for a screwdriver for releasing or securing the secondary part 17 on the dental implant 1.

(37) Slits 25 are arranged on the screw head 23, by means of which slits the head is radially compressible, and they function as a self-retaining structure. At least the secondary part 17, comprising the secondary-part body 22, and the secondary-part screw 20 can be held in the engaged state by means of a screwing-in tool when the secondary part 17 is secured on the dental implant by means of the secondary-part screw 20.

(38) In the area of the screw head 23, a guide portion 24 for guiding the screwdriver is arranged on the inside of the recess 21.

(39) Moreover, the recess 21 has a contour designed as a hexagon socket 29 for a screwing-in tool.

(40) Moreover, on the inside of the recess 21, the secondary-part body 22 has a release thread 48 in order to be able to remove the secondary-part body 22 safely and reliably from the implant, for example after removal of the secondary-part screw 20.

(41) The secondary-part screw 20 has a predetermined break area 32 between the screw head and the thread of the secondary-part screw 20. If, for example, too high a torque is applied to the screw head 23, the predetermined break area 32 can break. After removal of the screw head 23, lying above the predetermined break area 32, and of the secondary-part body 22, the thread area of the secondary-part screw 20 can be removed from the implant by means of a further tool.

(42) A tertiary part or an auxiliary part, for example a gingiva former, can be received on the neck area 30 of the secondary-part body 22. At this end, the secondary-part body 22 has a coronal cone 52 extending partially in the circumferential direction. The coronal cone 52 has a coronal cone angle k of approximately 10 with the longitudinal axis of the secondary part.

(43) A neck area 30, which comprises the coronal cone 52 inter alia, is arranged between a shoulder 33 and the end on which the auxiliary part or tertiary part can be received.

(44) In the neck area 30, peripheral depressions 31 are arranged in which an adhesive material can be arranged for the secure connection between secondary part and tertiary part.

(45) Moreover, a snap-fit contour 27 is arranged in the neck area 30, for the possibly releasable connection to an auxiliary part.

(46) On the outside, starting from the shoulder, the secondary-part body 22 has a gingiva-shape partial contour 26, which merges into a secondary-part cone 55. The secondary-part cone 55 is designed such that it can engage in the cone portion of the dental implant.

(47) FIG. 6 is a schematic view showing a dental implant 1 according to the invention anchored in a jawbone 50.

(48) A secondary-part body 17 with a gingiva-shape partial contour 26 is received in the dental implant 1. On the secondary part 17, a gingiva former 34 is arranged which additionally has the function of an incorporation cap. The soft tissue 51 can be shaped by the arrangement of secondary part 17, with gingiva-shape partial contour, and the gingiva former 34.

(49) By means of a tool 54, the gingiva former 34 can be removed, for example, from the secondary part 17, or can also be inserted.

(50) FIG. 7 shows a detail of the secondary part according to FIG. 5 comprising the neck area. The gingiva former 34 is snapped onto the secondary part comprising the secondary-part body 22. For this purpose, the snap-fit contour 27 is designed as a projection. The gingiva former 34 has a recess 53. In the snapped-in state, the recess 53 is arranged with respect to the projection of the snap-fit contour 27 such that pretensioning is achieved in the direction of the shoulder 33 of the secondary-part body 22. This is achieved by a corresponding axial offset of the recess 53 and of the snap-fit contour 27 from each other in relation to the longitudinal axis of the secondary part, such that the gingiva former 34 is pressed in the direction of the shoulder. The axial distance between the snap-fit contour 27 and the shoulder 33 is therefore smaller than the distance between the recess and the end face of the gingiva former 34 which is pressed onto the shoulder 33.

(51) The screw head 23 has a snap-fit structure 56, which forms a self-retaining structure for a screwing-in tool.

(52) The gingiva former 34 has an engagement area 35 for a tool for inserting or removing the gingiva former 34, as is shown in FIG. 6.

(53) FIG. 8 is a side view showing a cut-open gingiva former 34 with an engagement area in which the tool 54 engages. On the inside, the gingiva former has the recess 53 for connection to a snap-fit contour of the secondary-part body.

(54) FIG. 9 is a side view showing an impression part 36 according to the invention. The impression part 36 can function as a scanning body, as an impression body, as a temporary restoration or as an incorporation cap, depending on the requirements of the particular use.

(55) The impression part 36 is cylindrical with a cylinder axis Z and has four grooves 42, which are spaced apart from each other substantially parallel to the cylinder axis Z and extend parallel to each other substantially perpendicularly with respect to the cylinder axis Z. In this way, it is possible to define the position of the impression part 36 by use of an impression compound, such that the impression part 36 can function as an impression body.

(56) The impression part 36 also has a flat surface 43, which is spaced apart from the grooves 42 by part of a jacket surface 47 of the cylindrical body. The impression part 36 thereby acquires the function of a scanning body.

(57) The impression part is produced from plastic and can therefore be easily worked to form a temporary restoration.

(58) FIG. 10 shows the impression part 36 according to FIG. 9 in a cut-open side view.

(59) The impression part has an impression part engagement area 40 for a tool for inserting and/or removing the impression part 36. The impression part engagement area 40 extends along approximately half the length parallel to the cylinder axis of the impression part 36.

(60) The impression part 36 has a recess 53 for snapping onto a snap-fit contour of a secondary part.

(61) FIG. 11 shows the secondary part 36 according to FIG. 9 in a perspective view.

(62) FIGS. 12 to 15 are schematic views of a jawbone 50 with soft tissue 51 arranged thereon. FIG. 12 shows how, by means of a drilling tool 46, a drilled hole is created in the jawbone 50. FIG. 13 shows schematically how a dental implant 1 with secondary part 17 is anchored in the drilled hole. In FIG. 14, a gingiva former 34 is received as a tertiary part on the secondary part 17 as shown in FIG. 13. In FIG. 15, instead of the gingiva former, an impression part 36 is received which can function as a scanning body, as an impression body, as a temporary restoration or as an incorporation cap.

(63) FIG. 16 is a schematic view showing a package 49 which comprises a set 45 consisting of a pre-assembled dental implant with secondary part, comprising a means of screwing the dental implant into the jawbone.

(64) FIG. 17 is a schematic view showing a dental implant system 44 comprising the set 45 and a drilling tool 46 in a package 49.