WO1996029019A1

WO1996029019A1 - Connector for tooth replacements implant-mounted

Info

Publication number: WO1996029019A1
Application number: PCT/CH1996/000099
Authority: WO
Inventors: Franz Sutter; Francis J. Sutter
Original assignee: Institut Straumann Ag
Priority date: 1995-03-20
Filing date: 1996-03-15
Publication date: 1996-09-26

Abstract

The plug connector proposed is particularly suitable in all phases of tooth-replacement work, from the taking of impressions of implants (1) inserted in the jaw bone (K), to the production of the master model and finally the fixing of a supra-construction on the implants (1) in the patient's mouth. Use of the connector considerably facilitates the work for the patient, the dentist and the dental technician. The main components of the connector are an anchor pin (100) with an elastic clamp head (130), and a contoured element fitting the anchor pin. This contoured element, a snap-in shoulder (307) for instance, is located in the other part of the connector, i.e. in the impression cap (300), the crown cap or a secondary element (8). The secondary element (8) can be inserted in the implant (1) or in a manipulatory implant, or can be a fixed constituent of such implants.

Description

Ve-rbindunσsannrdnunσ for implant, supported denture?

The invention relates to a connection arrangement for implant-supported dentures according to the preamble of independent patent claim 1, which can be used for taking impressions, producing the master model or attaching a superstructure to the implant used in the jawbone.

Great progress has already been made in design, materials research, instruments and implantation techniques, so that today there is a very high success rate and more and more people with missing teeth or tooth roots that are no longer available are deciding to To have implants inserted. People affected in this way can significantly improve their quality of life through implants. Before the insertion of dentures or individual artificial teeth, the intraoral geometry must be transferred to a master model true to the original by taking an impression. The present invention is concerned with a connection arrangement which, on the one hand, considerably simplifies the taking of impressions and dental processing and, on the other hand, enables the patient to have a precisely aligned, structurally uncomplicated, yet reliable and also inexpensive implant-supported denture.

fit-anri ή-r- Terhnik

Figures Oa to Oc illustrate a conventionally used arrangement and procedure for taking impressions, as described, for example, by Schroeder, A., inter alia in: Oral Implantology. Georg Thieme Verlag Stuttgart, 2nd ed., 1994, p. 209 ff. Figure Qa

In the upper or lower jaw bone K, the implant 1 - here a perforated hollow cylinder implant - is inserted intraosseously and transgingivally, so that the implant head 11 penetrates the mucous membrane S. The example described relates only to one implant 1. In the case of a comprehensive restoration, a plurality of implants 1 can also be placed, so that the dental structures are multiplied accordingly. After the 3-4 month healing phase of the implant 1, the healing cap, which is no longer visible here, was removed and the octa secondary part 2 was screwed into the implant 1 in situ. The base cone 21 of the octa secondary part 2 thus sits in the implant cone 12 and the threaded segment 22 of the octa secondary part 2 engages in the threaded bore 13 of the implant 1. The threaded bore 13 extends from the space of the implant cone 12, axially downward from its bottom surface. The octaseg ent 23 of the octa secondary part 2 projects beyond the implant shoulder 14. The non-repositionable impression cap 3 with its counter shoulder 31 is placed on the implant shoulder 14. The impression cap 3 is screwed to the octa secondary part 2 by means of a positioning screw 4 which axially penetrates it, in that the threaded segment 41 of the positioning screw 4 is screwed into the blind hole 24 in the

Octa secondary part 2 engages. Complementary inner contours for the octasegment 23 are provided on the connection part 32 of the impression cap 3, so that the parts form a positive connection. Dr'ehinstrumentes for the engagement of a positioning screw has the inputs 4 on the screw head 42 has a Phillips-head 43. At the caring to ver¬ jaw line and the impression cap 3, a bdruckmasse _A with 5-filled impression tray 6 is set, the at at its apex there is a passage 61 for the screw head 42 and for the escape of excess impression material 5, which is displaced when the impression tray 6 is pressed onto the jaw area. The impression cap 3 has the typically angular outer contour with a plurality of outer and spaced apart ribs 33 for promoting the bond with the impression mass 5 surrounding the impression cap 3.

Figures Q.b and O.c

The further process is shown here. After the impression material 5 has set, the mass plug 51 which has swelled out of the passage 61 must be removed in order to expose the screw head 42 and to be able to unscrew the positioning screw 4 from the octa secondary part 2. Only now can the impression tray 6 with the impression cap 3 firmly embedded in the impression compound 5 be removed from the patient's mouth. The contour of the jaw area is negatively shaped in the impression material 5.

The following specification applies to the entire further description. If reference numerals are included in a figure for the sake of clarity in the drawing, but are not explained in the directly associated description text, reference is made to their mention in the previous description of the figures.

Figure O.c

The manipulation implant 7 now placed on the impression cap 3 has the same features on its head 71 as that

Implant head 11 of the implant 1 with the implant shoulder 14 and the screwed-in octa secondary part 2 and its protruding octasegment 23. The manipulation implant 7 accordingly has the analog head 71 with the implant shoulder 74 and the protruding octasegment 73, which form-fit onto the connection part 32 of the impression cap 3. For the threaded bore 24 in the octa secondary part 2, a similar, blind hole-shaped threaded bore 72 is provided in the head 71. Through the passage 61 in the impression tray 6 and the impression cap 3, a positioning screw 4 is screwed in again in order to connect the manipulation implant 7 with the impression cap 3 enclosed in the impression cap 6 firmly and without gaps. The threaded segment 41 thus engages in the threaded bore 72. To create the master model, the negative form obtained from the treated jaw area is then cast with a hard plaster and the manipulation implant 7 is embedded in the process.

The subsequent work phases are no longer shown in the drawing. After the hard plaster has solidified, the positioning screw 4 is unscrewed and the negative mold is separated from the hard plaster mold - the master cast obtained, which corresponds exactly to the contour in question in the patient's mouth. Then a gold cap is placed on the master model and on the protruding head 71 of the manipulation implant 7. Finally, the restoration is waxed and cast on the gold cap and finally fired for the final prosthesis ceramic. The patient receives the finished restoration, which is penetrated by a titanium occlusal screw and engages in the octa-secondary part 2 screwed into the implant 1, so that the restoration is now firmly seated on the implant 1.

This conventional system has a number of disadvantages when taking impressions, in particular: • To attach the impression cap 3 to the implant 1, both construction parts must be connected to one another by a positioning screw 4;

• the impression tray 6 must be provided with passages 61 which are to be placed exactly before the impression is taken;

The excess impression mass exiting the passages 61, i.e. The ground plugs 51 formed around the screw heads 42 must be removed after the impression compound 5 has hardened in order to be able to unscrew the positioning screws 4;

• Only after the positioning screws 4 have been unscrewed can the impression tray 6 be removed from the patient's mouth and transferred to the dental laboratory;

• In addition, in the dental laboratory, before the master model is manufactured, manipulation implants 7 have to be attached to the connecting parts 32 of the impression caps 3 and fixed with positioning screws 4.

With the connection arrangement described above, the creation of the master model is overall complicated, requires numerous work steps and is a tedious procedure for the patient, the dentist and the dental technician.

Detachable connection arrangements in the form of a plug-receptacle combination are known from US Pat. Nos. 3,797,114 and 5,195,891. The snap connections are formed by pushing a plug element into a receiving element, the plug element having a pin with a spherical head and the receiving element having an elastic gripping means. When the plug-in element is inserted, the gripping means is first widened; the head of the plug-in element is completely inserted, the gripping means again. The snap connections obtained in this way consist of a large number of relatively complicated individual parts. It is particularly inadequate that there is no reliable control over the sufficient strength of the connection.

Finally, a further releasable connection arrangement with interlocking elements is known. Here the receiving element has a locking slide which is under spring pressure and which engages in a recess in the plug-in element when the latter is pushed into the end position. The disadvantages of this connection arrangement are that the connection can only be solved with great difficulty and the resilient locking slide represents an uncertainty factor with regard to the functional reliability.

In view of the imperfections of the prior art described above, the invention has set itself the task of creating a much improved connection arrangement. It is important to develop system elements that make it significantly easier to take the impression and the subsequent dental processing. Furthermore, as few elements as possible should be required for the construction of the superstructures, ie for the intraoral attachment of the artificial tooth replacement parts. The connection can be established or released by simple linear relative movement and without additional rotation, since otherwise the mechanism would be complicated again. It is assumed that part of the connection arrangement is firmly connected to the implant. The solution to this problem is defined by the characterizing features of independent claim 1, while preferred embodiments result from the dependent claims. The essence of the invention is that a plug anchor with an elastic clamping head and a complementary contour are provided, which together result in a detachable plug connection. This contour - for example a locking shoulder - is arranged in the counterpart of the plug connection, which is not firmly connected to the plug anchor. Alternatively, this can be the impression cap, the crown cap or an existing secondary part, the secondary part being inserted in the implant or in the manipulating implant or being a fixed component thereof. The plug-in anchor is either fixedly pointing upward in the secondary part or pointing downward firmly in the impression or crown cap. By deliberately dimensioning the geometrical relations, the separating force required to release the plug connection is designed differentially.

The connection arrangement according to the invention is described in more detail below with reference to the accompanying drawings. Show:

Figure O.a: a partial section through an enostal set dental implant when taking the impression with the impression cap and spoon according to the prior art; O.b: the illustration according to Figure O.a with the impression tray removed and the handle turned out

Positioning screw; Oc: the representation according to FIG. Whether with the manipulation implant attached and the positioning screw turned; FIG. 1: the connection arrangement according to the invention for taking impressions in the upward position with a conical secondary part and a recessed recess in the impression cap;

2: the connection arrangement according to FIG. 1 with an inner bead in the impression cap; 3: the connection arrangement according to FIG. 1 with an impression cap of a uniform inner contour and a plug-in anchor with a

Clamping head with increased spreading force; 4: the connection arrangement according to FIG. 1 with an additional centering sleeve; 5: the connection arrangement according to FIG. 4 in an angled version;

FIG. 6a: two enostalged implants with screwed-in, axially symmetrical conical secondary parts and approximate plug anchors for preparing the impression for a tooth-bridge construction; 6b: the illustration according to FIG. 6a with screwed-in plug-in anchors and approximated impression caps; 6c: the representation according to FIG. 6b with attached impression caps;

FIG. 7: implants positioned in a diverging manner with axially symmetrical conical secondary parts and flexible or angled plug-in anchors;

FIG. 8: the connection arrangement according to FIG. 2 for fastening a finished crown to a single tooth or for a tooth-bridge construction;

FIG. 9: the connection arrangement according to FIG. 1 with an octa secondary part and complementary internal octagon in the impression cap as a rotation lock;

10: the connection arrangement according to FIG. 9 with an additional retaining screw; 11: a crown cap with transversal screwing for the connection arrangement 10 as the basis for a superstructure;

FIG. 12: the connection arrangement for taking the impression in the downward position with a conical secondary part and an inner bead in the impression cap; 13: the connection arrangement according to FIG. 12 with clamping ring and groove on the conical secondary part for the transversal screw connection; 14: the connection arrangement according to FIG. 13 with an occlusal thread in the conical secondary part for fastening a finished crown; 15: the connection arrangement according to FIG. 14 with a widely movable plug anchor for extremely divergent implants;

FIG. 16: the connection arrangement according to FIG. 12 with the manipulation implant attached for the model production;

FIG. 17: the connection arrangement according to FIG. 12 for fastening a finished crown to a single tooth or for a tooth-bridge construction; 18: the connection arrangement according to FIG. 13 with transverse screwing of the finished crown; 19: the connection arrangement according to FIG. 14 with fastening of the finished crown by means of the plug-in anchor;

20: the connection arrangement according to FIG. 14 with occlusal fastening of the finished crown;

FIGS. 21a-21e: workflow of taking the impression using the connection arrangement according to FIG. 22a-22e: workflow according to FIGS. 21a-21e using the connection arrangement according to FIG. 5;

23a-23e: workflow according to FIGS. 21a-21e using the connection arrangement according to FIG. 9; 24a-24e: workflow according to FIGS. 21a-21e using a conical secondary part having a groove; 25a-25e: workflow of the model and crown production using the connection arrangement according to FIG. 1 and occlusal screwing of the gold cap or the finished crown, 26a-26e: workflow according to FIGS. 25a-25e using the Connection arrangement according to Figure 5; 27a-27e: workflow according to FIGS. 25a-25e with firmly cemented gold cap or finished crown; 28a-28e: workflow according to FIGS. 26a-26e with cemented gold cap or finished crown;

Figures 29a-29e: workflow of the model and crown production using the connection arrangement according to Figure 9; 30a-30e: workflow according to FIGS. 25a-25e using a conical secondary part with a groove; 31a-31e: workflow according to FIGS. 30a-30e with a transversely screwed gold cap or finished crown;

32a-32e: workflow according to FIGS. 29a-29e for fastening a provisional crown.

Figure 1

The connection arrangement according to the invention for taking the impression consists in principle of the implant 1 inserted into the jawbone K, the conical secondary part 8 screwed into it, the plug-in anchor 100 screwed into the latter and the impression cap 300 which can be plugged onto the latter.

In a conventional manner, the implant 1 has a conically widening implant head 11 which penetrates the mucous membrane S and closes off at the top with the implant shoulder 14. One is downward in the implant head 11 conically narrowing bore - the implant cone 12 - provided. A blind hole-shaped threaded bore 13 extends axially downward from the bottom of the implant cone, into which the threaded segment 82 of the conical secondary part 8 is screwed. The cone secondary part 8 also consists of the base cone 81 adjoining the threaded segment 82 and the cone pillar 83 tapered upward thereon. The base cone 81 is embedded in the implant cone 12 and closes with its upper edge practically at the raised, inner shoulder of the implant shoulder 14, while the conical pillar 83 protrudes from the implant 1. A blind hole-shaped threaded bore 8 extends axially downward from the top surface of the cone pillar 83 and thus from the top surface of the entire cone secondary part 8.

The threaded segment 110 of the plug anchor 100 is screwed into the threaded bore 84. The plug-in anchor 100 also consists of the shaft segment 120 which adjoins the threaded segment 110 and which extends over an annular support shoulder 121 and extends in diameter and protrudes from the cone pillar 83, the support shoulder 121 being seated on the cone pillar shoulder 85. The dome-shaped adhesive head 130 adjoins the cylindrical shaft segment 120 in an overhang-like manner and abruptly extends, so that there is a clearly contoured, radially circumferential locking flank 131 between the shaft segment 120 and the clamping head 130. Dividing slots 132, preferably two cross-arranged dividing slots 132, pull vertically from the clamping head 130 into the shaft segment 120, as a result of which four identical anchor slats 133, which are elastic in the horizontal plane, are created. The impression cap 300 has the typically angular outer contour with ribs 303. On the underside of the impression cap 300 there is the connection part 302 with the counter shoulder 301 complementary to the implant shoulder 14, thereby ensuring that the impression cap 300 is placed seamlessly on the implant 1 is. From the connection part 302, starting from the underside of the impression cap 300, an axially and upwardly narrowed conical bore 304 extends into the interior of the impression cap 300. Ascending, the conical bore 304 merges into a cylinder bore 305, which is located behind one on the inner wall 306 provided radially circumferential locking shoulder 307 expanded cavity. The locking shoulder 307 is circular and conically narrowing downwards, so that it assumes an angle of inclination α with the vertical axis, preferably 30 ° <α <60 °.

When the impression cap 300 is in place, the conical pillar 83 is seated in the conical bore 304 and the shaft segment 120 in the lower section of the cylinder bore 305, while the clamping head 130 is located above the locking shoulder 307 in the enlarged section of the cylinder bore 305. The elasticity of the fixed plug-in anchor 100 with the anchor slats 133 causes the latching flank 131 to be pressed onto the latching shoulder 307, as a result of which the impression cap 300 is pulled onto the implant 1 in a quasi-vertical direction. The counter shoulder 301 of the impression cap 300 is pressed onto the implant shoulder 14. To ensure this function, there must be a minimum clearance between the conical bore 304 and the outer contour of the conical pillar 83 be respected; the two cones must not be on top of each other. The arrangement where the plug anchor 100 is screwed into the cone secondary part 8 and the clamping head 130 protrudes is referred to as the upward position. The following explanations deal with the geometric relationships to the ideal force dimensioning.

Figure 2

A first structural modification to the connection arrangement is shown. The implant 1, the conical secondary part 8 screwed therein and the plug-in anchor 100 screwed into the latter correspond to the previously discussed embodiment. Only the clamping head 130 is made flatter; in principle, the outer contour of the impression cap 300 is also unchanged. To accommodate the cone pillar 83 and the shaft segment 120, an axial cone bore 304 and a cylinder bore 305 directly adjoining it are likewise provided in the impression cap 300. Instead of the latching shoulder 307 according to FIG. 1 with the enlarged section of the cylinder bore 305 located above it, a radially circumferential, raised latching web 308 is present on the inner wall 306 and inside the blind hole-shaped cylinder bore 305.

The cylinder bore 305 has the clear bore diameter d _B , which is located in the area of the full height of the locking web

308 narrowed to the dimension of the clear locking web diameter d _R , and the clamping head 130 has the clamping head diameter d _κ . Consequently, you get the diameter ratios d _B > d _κ > d _R. The latching web 308 has the cross-sectional shape of an isosceles trapezoid, the base line of which lies on the inner wall 306. The trapezoidal legs also assume the angle of rise α with the vertical axis here. If the impression cap 300 is placed on the plug-in anchor 100, then the clamping head 130 is located above the latching web 308, in the upper section of the cylinder bore 305, and the latching flank 131 of the clamping head 130 presses on the upper trapezoidal leg of the latching web 308. This results in the impression cap 300 again pulled onto the implant 1 in the vertical direction. The counter shoulder 301 of the impression cap 300 sits seamlessly on the implant shoulder 14; Impression cap 300 and implant 1 are mutually fixed for the method of taking the impression.

When the impression cap 300 is attached or removed from the plug-in anchor 100 - the clamping head 130 overcomes the constriction at the locking web 308 - there must be sufficient space for the compressed anchor slats 133. The division slots 132 in the clamping head 130 must therefore have a sufficient slot width b _s . The division slots 132 are provided in a slot length l _s which can extend into the vicinity of the threaded segment 110 of the plug-in anchor 100.

In order to establish the plug connection between the implant 1 and the impression cap 300, the plug force F _{s must be applied} ; around the impression cap 300 after the impression has been taken - the impression compound 5 must be sufficiently hardened - subtract, you need the separation force F _τ . The to spend

The forces F _s and F _τ are functionally dependent

for bore, locking bar and clamping head diameters d _B , d _R and

d _κ , for the contour of the latching flank 131 and shoulder 307 or the latching web 308 as well as for the elasticity of the anchor slats 133. The material properties and geometry of the anchor slats 133, as well as the slot width and length b _s , l _s , Influence.

Figure 3

As a deviating special feature, it is provided in this design variant that the blind hole-shaped cylinder bore 305 in the impression cap 300 is designed without interruption, ie without a locking shoulder 307 or a locking web 308. The fixation between the attached impression cap 300 and the clamping head 130 of the plug-in anchor 100 is based here on the spreading force, acting against the inner wall 306, of the spring-loaded, compressed anchor plates 133. When the impression cap 300 is removed, the clamping head 130 is more spread. If the impression cap 300 is attached, the friction on the contact surface between the inner wall 306 and the outer curvature of the clamping head 130 holds the impression cap 300 on the implant 1, ie the connecting part 302 of the impression cap 300 is fixed on the implant head 11 and that Counter shoulder 301 thus lies seamlessly on implant shoulder 14. A specifically created surface roughness on the clamping head 130 and on the inner wall 306 is the firm, gap-free fit necessary during the taking of the impression Counter shoulder 301 of impression cap 300 on implant shoulder 14 is beneficial.

In a modification of the completely uncontoured, continuous inner wall 306 just described, it is also practical to design the cylinder bore 305 in two sections of different diameters. If the impression cap 300 is attached, it follows that, following the conical bore 304, the cylindrical bore 305 has a larger one over a wide area of the shaft segment 120

Diameter than in the upward section where the clamping head 130 is positioned. The transition between the lower, enlarged section of the cylinder bore 305 and the upper, narrower section forms a relatively narrow, circular conical surface. When the impression cap 300 is put on, the clamping head 130 thus first passes through the enlarged section of the cylinder bore 305. As the conical surface passes the anchor plates 133 of the clamping head 130 are progressively compressed. Biased in this manner, the clamp head 130 then slides into the upper, narrower portion of the cylinder bore 305 and holds the impression cap 300 as described above due to friction.

Figure 4

This embodiment of the connection arrangement is an extension to FIG. 1 insofar as an additional centering sleeve 9 is arranged in the implant head 11, which surrounds the reduced base cone 81 of the cone secondary part 8 (see FIG. 5). This way you can achieve a higher transfer accuracy when taking the impression - \ 7 -

Cone Abutments 8. The alignment between the cones of the cone pillar 83 and the cone bore 304 is more accurate. In order to achieve a certain elasticity, the centering sleeve 9 has vertically arranged expansion slots 92 on the sleeve shell 91. Under the pressure of the screwed-in cone secondary part 8, the sleeve shell 91 nestles against the implant cone 12 while centering the base cone 81 seated in it. In this embodiment, the conical pillar 83 has a radially circumferential shoulder portion 86 on the underside, which is placed directly on the implant shoulder 14. The counter shoulder 301 of the impression cap 300 is correspondingly narrowed in order to leave space for the shoulder part 86 on the implant shoulder 14. The plug anchor 100 is configured in the manner described above.

Figure 5

The construction of the connection arrangement for taking the impression is illustrated using an angled cone secondary part 8. This construction largely corresponds to that of FIG. 4 described above with an axially symmetrical cone secondary part 8. The angled conical secondary part 8 now used enables the other construction parts to take the impression even when the implant 1 is inclined in the range from 0 ° to 30 °. Adapted impression caps 300 must be provided in accordance with the angle of inclination of the conical secondary part 8. The counter shoulder 301 of the impression cap 300 and the shoulder part 86 of the conical secondary part 8 are also seated on the implant shoulder 14 here. A centering sleeve 9 can advantageously also be provided in the implant head 11 of the unchanged implant 1. The footprint Cap 300 and the plug anchor 100 are otherwise identical to the previous design variants. An insertable screw 87 is used to fix the cone secondary part 8 in the implant head 11, which is supported on an integrated seat in the cone secondary part 8 and engages in the threaded bore 13 in the implant 1.

Figures 6a to 6c

Based on this series of figures, three construction phases of the connection arrangement for taking an impression, for example a tooth-bridge construction, are shown. According to FIG. 6a, two implants 1 standing massively divergent to one another are placed enostal in the jawbones K. Such a different implantation may be necessary due to the specific bone supply. The implant heads 11 penetrate the mucous membrane S and thus act as transmucosal units. Screwed into the implants 1 are axially symmetrical conical secondary parts 8, in whose threaded bores 84 the plug anchors 100 with their threaded segments 110 are now screwed in. FIG. 6b shows the connection arrangements prepared so far with the positioned plug-in anchors 100 and the impression caps 300 to be attached (construction corresponding to FIG. 1). According to FIG. 6c, the preparations for taking the impression are completed. The impression caps 300 are held by the clamping heads 130 and sit seamlessly on the implant shoulders 14 with their counter shoulders 301.

FIG. 7 results from a further structural modification of the connection arrangement for strongly divergent implants. would result in 1. The modification relates to the plug anchor 100; otherwise the design corresponds to FIG. 1, ie an axially symmetrical conical secondary part 8 is screwed into the implant 1. The combination of implant 1, conical secondary part 8 and plug anchor 100 drawn in the middle is only intended to represent the ideal vertical position for a clear comparison. The adaptation to a strong inclined position is achieved in that a recess 122 is provided on the plug-in anchor 100, below the locking flank 131, radially around the shaft segment 120. If a flexible material - for example a plastic - is used for the plug-in anchor 100, at least for the clamping head 130 and the adjoining shaft segment 120, this makes it possible to compensate for the inclination of the individual anchoring plates 133 created by the division slots 132. The stability of the clamping connection between the clamping head 130 and the attached impression cap 300 is not adversely affected by this.

Figure 8

Shown is the use of the connection arrangement going beyond the impression taking described so far, now for fastening a superstructure, for example in the form of an artificial tooth crown Zk for a single tooth (individual crowns). The tooth crown Zk consists of the internal, framework-forming crown cap 500 and the tooth Za modeled thereon. In principle, the crown cap 500 has an inner contour identical to the impression caps 300 according to the previous figures (except FIG. 3). The clamping connection between the clamping head 130 and the impression cap 300 based solely on friction according to FIG. 3 is suitable for the fixation of a tooth crown Zk, because of the firmer fit necessary here, is not an option.

The implant 1 is present with the implant head 11, the implant cone 12, the threaded bore 13 extending downwards from this space and the implant shoulder 14 radially encircling it. A cone secondary part 8 is inserted into the implant 1, the construction and screw connection of which the implant 1 has already been described. The conical abutment 83 protrudes from the implant head 11, as already shown above. A plug anchor 100 with its threaded segment 110 is in turn screwed into the threaded bore 84 of the conical pillar 83. The shaft segment 120 and the clamping head 130 are configured in the manner described above. The crown cap 500 has a connection part 502 located at the bottom with the counter shoulder 501, which sits seamlessly on the implant shoulder 14. Analogous to the impression cap 300, a conical bore 504 extends axially upwards from the connection part 502 into the crown cap 500, the conical bore 504 merges into the blind-shaped cylindrical bore 505, and the locking web 508 is provided on the inner wall 506.

When the tooth crown Zk is put on, just before the crown cap 500 sits seamlessly on the implant 1, the latching web 508 jumps over the clamping head 130 and the latching flank 131 now presses on the latching web 508, as a result of which the tooth crown Zk is pulled onto the implant 1. The tooth crown Zk must be placed much more securely and firmly on the implant 1 than is necessary when taking an impression is. The separating force F _τ 'to be used when attaching a superstructure to loosen the connection arrangement must be dimensioned significantly higher than when taking an impression. To achieve this, various individual measures or their combination are possible. The most practical thing is to reduce the size in relation to the impression

Provide locking bar diameter d _R ', which results in d _R > d _R '. The angle of rise α could also be increased so that the upper trapezoidal leg at the stop bar 508, which is relevant for the hold, approaches the horizontal more closely and thus represents a greater obstacle for the latching flank 131 when the tooth crown Zk is intended or unintentionally removed. This connection arrangement can likewise be used for the fastening of artificial individual teeth or bridge constructions.

Figure 9

The design of the connection arrangement with rotation lock, which is first explained for taking an impression, is particularly advantageous for the single tooth replacement. Instead of the conical secondary part 8 previously used, an octa secondary part 2 is now screwed into the implant 1, as has already been shown in the illustration of the prior art with reference to FIGS. The base cone 21 of the octa secondary part 2 is seated in the implant cone 12, and the threaded segment 22 of the octa secondary part 2 engages in the threaded bore 13 of the implant 1. The entire octa segment 23 protrudes beyond the implant shoulder 14. Due to tolerances and different screwing depths of the octa The secondary part 2 can also rise the horizontal ledge 25 between the base cone 21 and the octasegment 23 over the implant shoulder 14.

In turn, a plug-in anchor 100 is screwed with its threaded segment 110 into the threaded bore 24 provided in the octa secondary part 2. The shaft segment 120 attached to the threaded segment 110 and the clamping head 130 arranged on top extend freely in height without the push-on cap 300 attached. The support shoulder 121, which delimits the shaft segment 120 downward, rests on the octane shoulder 26. In relation to the impression caps 300 from FIGS. 1 or 2, the impression cap 300 now used has the same external appearance. In the attached position, the impression cap 300 with its counter shoulder 301 sits seamlessly on the implant shoulder 14. However, the inner contour of the connecting part 302 of the impression cap 300 is designed to be complementary to the octasegment 23 and accordingly has an inner octagon 27. In the event that the ledge 25 protrudes beyond the implant shoulder 14, a radially circumferential recess 309 is provided on the inner edge of the counter shoulder 301. The counter shoulder 301 can thus be placed seamlessly on the implant shoulder 14 even when the ledge 25 is raised.

The inner octagon 27 continues axially ascending as a pocket-hole-shaped cylinder bore 305, into which the shaft segment 120 and the clamping head 130 extend. As already described for the preceding figures, a raised, radial latching web 308 is present on the inner wall 306. When it is plugged in, it sits Upper trapezoidal leg of the locking web 308 under the locking flank 131 of the clamping head 130. Instead of the locking web 308, a locking shoulder 307 (see FIG. 1) could also be incorporated on the inner wall 306 or the inner wall 306 is designed to be continuous (see FIG. 3). With the use of an octa secondary part 2 in the connection arrangement, twisting of the fitted, adapted impression cap 300 is prevented.

Figure IQ

The connection arrangement is illustrated using an octa secondary part 2 during the taking of the impression, whereby finally a superstructure is fastened with a transversal screw connection. In the construction according to FIG. 9, the threaded segment is screwed on

110 of the plug-in anchor 100 directly into the threaded bore 24 of the octa secondary part 2. Now, on the other hand, a screw bolt 200 required for the subsequent transverse screw connection is additionally inserted. The screw bolt 200 has a threaded segment 210 which is screwed into the threaded bore 24 of the octa secondary part 2. Connected to the threaded segment 210 is a sleeve segment 220 which has a blind hole-shaped threaded bore 221 extending axially from above for receiving the threaded segment 110 of the plug anchor 100. The sleeve segment 220 has a radial groove 222 on the outer circumference.

This screw bolt 200 can be screwed in before the impression is taken. However, a special impression cap 300 with an enlarged cavity 310 is then required in order to provide space for the screw bolt 200 create. It is also possible to take the impression with the connection arrangement according to FIG. 9 - without the screw bolt 200 - and to use this only after removing the plug anchor 100 in preparation for the transverse screw connection (see FIG. 11).

Figure 11

Shown is the crown cap 500 with transverse screw connection, preferably in the form of a gold cap, which serves as a framework for the construction of a superstructure for the dental technician. The superstructure, e.g. a tooth crown is placed on the crown cap 500 prior to insertion into the patient's dentition. There is an implant 1 which is equipped with an octa secondary part 2, the octasegment 23 of which projects above the implant shoulder 14. The octasegment 23 and the screwed-on screw bolt 200 are received by the crown cap 500. The latter has a connection section 502, the counter shoulder 501 of which sits seamlessly on the implant shoulder 14. A radially circumferential recess 509 is provided on the inner edge of the counter shoulder 501. Should the ledge 25 of the octa secondary part 2 protrude beyond the implant shoulder 14, the abutment against the counter shoulder 501 is thus avoided.

A 24 inner edge 403 extends vertically into the crown cap 500 from the recess 509 and receives the octasegment 23. The combination of 24 inner edge 503 and octasegment 23 results in a total of 24 possible plug-in positions in 15 ° steps for the crown cap 500 to be fitted. At the same time, the flanks of the 24 inner edge 503 and the octane segment 23 lying against one another serve as guides for the crown cap 500. Further upwards, the 24 inner edge 503 merges into a blind hole-shaped cylinder bore 505 in order to receive the sleeve segment 220.

Laterally, the crown cap 500 has a compact material leg 510 with a downward-going, continuous threaded bore 515 directed towards the radial groove 222. A stud screw 516, whose round tip 513 is tangent to the upper edge boundary of the radial groove 222, is recessed into this threaded bore 515 strikes and thus causes the crown cap 500 to be pressed onto the implant shoulder 14. The crown cap 500 is fixed by means of the stud screw 516. The stud 516 has a head slot 514 for attaching a screwing tool.

Figure 12

Starting with this figure, embodiments of the connection arrangement follow in the downward position. In the upward position, the plug-in anchor 100 with its threaded segment 110 is screwed into an octa secondary part 2 or into a conical secondary part 8 and the clamping head 130 is directed upwards, while the impression or crown cap 300, 500 attaches the clamping head 130 takes up. The characteristic of the downward position, on the other hand, is that a reversal is provided insofar as the downward-pointing plug-in anchor 100 is now permanently seated in the impression or crown cap 300, 500 and for establishing the clamping connection in a special one for receiving the clamping head 130 designed conical secondary part 8, is inserted. The connection arrangement for taking the impression is also initially based on the existing implant 1 with the implant head 11, the implant cone 12, the threaded bore 13 and the implant shoulder 14. A conical secondary part 8 is screwed axially into the implant 1, the threaded segment 82 engages in the threaded bore 13 and the base cone 81 is seated in the implant cone 12. The conical abutment 83 projects beyond the implant shoulder 14 and ends at the top with the annular and radially circumferential conical abutment shoulder 85. From the top of the cone pillar 83 and thus from the top of the entire cone secondary part 8, a blind hole-shaped cylinder bore 805 extends axially into the interior, which serves to receive the plug-in anchor 100. In the example here, the inner wall 806 has a raised locking web 808, which has the same function and contour as the locking web 308 from FIG. 2. It is also possible, instead of the locking web 808, to have a locking shoulder 307 (see FIG. 1) to provide an identical contour or to design the inner wall 806 consistently (see FIG. 3).

The dimensional relationships within the cylinder bore 805 are designed appropriately to the conditions in the impression cap 300 (see FIG. 2). The cylinder bore 805 has the clear bore diameter d _B , which is in the range of

Locking web 808 narrowed to the locking web diameter d _R. The trapezoidal legs on the locking web 808 also assume the angle of rise α with the vertical axis. The outer contours of the impression caps 300 are indistinguishable, irrespective of whether it is the variant of the upward or downward position, but the inner configurations are different. The impression cap 300 for the downward position initially also has, in an identical manner, a connection part 302 with the counter shoulder 301 and an upwardly narrowing conical bore 304 with the summit diameter dg for receiving the entire conical pillar 83.

Adjoining the conical bore 304 is a narrower and relatively flat cylindrical bore 311, from which a narrow bore-shaped threaded bore 312 extends axially ascending again. The cylinder bore 311 forms a form-fitting seat for the cylindrical support segment 140 of the plug-in anchor 100 which is partially located therein. The support segment 140 forms an intermediate member; the ascending thread segment 110 attaches to the upper side thereof, while the downward-pointing shaft segment 120, from which the clamping head 130 is integrally formed, extends from the underside. The threaded segment 110 of the plug-in anchor 100 engages in the threaded bore 312, so that it is firmly connected to the impression cap 300. The clamping head 130 in turn has the latching flank 131, dividing slots 132 with the slot width b _s and the slot length l _s, and anchor lamella 133 formed thereby, and the geometric dimension of the clamping head diameter d _κ . The diameter ratios result from d _R <d _κ <d _B <UQ. When the impression cap 300 is in place, the cone pillar 83 is seated in the cone bore 304, the cone pillar shoulder 85 is located near the bottom of the cone bore 304, and the carrier segment 140 has been partially inserted into the cylinder bore 805. The shaft segment 120 with the clamping head 130 also extends into the cylinder bore 805. The clamping head 130 has overcome the constricting latching web 808, so that the latching flank 131 now engages under the lower trapezoidal leg of the latching web 808. However, since this is fixed, the elastic anchor lamellae 133 endeavor to repel themselves from the latching web 808 and thereby pull the impression cap 300 connected to the plug-in anchor 100 downward. As a result, the impression cap 300 is pressed onto the implant 1 and the opposite shoulder 301 sits seamlessly on the implant shoulder 14. The plug-in force is used to produce the plug connection

F _s required; if you want to separate the connection, the separation force F _{τ must be} applied.

Figure 13

The changes compared to the previous figure relate to a modified cone secondary part 8, the width of the counter shoulder 301 placed on the implant shoulder 14 and the fixing of the plug anchor 100 in the impression cap 300. The threaded segment 110 of the plug anchor 100 and that in the impression cap 300 threaded bore 312 provided for screwing in are now replaced by a plug pin 150 on the plug anchor 100 and a cylinder bore 322 forming a press fit in the impression cap 300. The pin 150 inserted into the cylinder bore 322 is replaced by the Clamping effect of the press fit in the impression cap 300.

The cone pillar 83 of the cone secondary part 8 likewise has the radially circumferential shoulder portion 86 on the underside, which is placed directly on the implant shoulder 14. The counter shoulder 301 of the impression cap 300 is reduced in width so that the shoulder part 86 can also rest on the implant shoulder 14 (see FIG. 4). Furthermore, an externally circumferential radial groove 809 is provided on the conical pillar 83, which is only used for the later transverse screwing. At the upper end of the base cone 81 - directly under the base of the conical pillar 83 and still surrounded by the implant head 11 - a further radial groove 810 is incorporated. This radial groove 810 serves to receive a clamping ring 900, which has the function of centering the conical secondary part 8 - similar to the centering sleeve 9 (see FIG. 4). In addition, the clamping ring 900 also acts as a rotation lock; unscrewing the conical secondary part 8 from the implant 1 is made more difficult. Instead of the clamping ring 900, the centering sleeve 9 could also be used, provided the contour of the base cone 81 is reduced accordingly.

Figure 14

This embodiment of the connection arrangement for taking an impression is an extension of the previous variant in that the cylinder bore 805 in the conical pillar 83 of the conical secondary part 8 is partially provided with an internal thread 811. The internal thread 811 extends from the latching web 808 up to the level of one from the conical pillar shoulder 85 downward cylindrical countersink 812. Compared to the cylinder bore 805, the countersink 812 is enlarged, into which the carrier segment 140 is partially inserted when it is plugged together. Like the radial groove 809, the internal thread 811 is initially without function for taking the impression. Only for the transverse or occlusal screwing of the superstructure placed on the implant 1 fitted with the conical secondary part 8 is the radial groove 809 or the internal thread 811 used by a screw. The thread tips of the internal thread 811 are flattened, so that the armature lamellae 133 of the clamping head 130, and to a certain extent also the internal thread 811 itself, are protected when the plug-in anchor 100 is inserted or removed.

Figure 15

A constructive modification of the connection arrangement for the purpose of taking impressions on extremely diverse implants 1 is presented. Compared to the previous variant, the inclusion of the plug anchor 100 in the impression cap 300 and the plug anchor 100 itself have been changed, which can be deflected laterally here is stored. The conical bore 304 and / or the conical pillar 83 of the conical secondary part 8 must be dimensioned such that, when the impression cap 300 is in place, between the inner wall 306 and the

Cone pillar 83 there is a gap for the process of pulling off the impression cap 300. An axial threaded bore 330 extends from the top surface of the impression cap 300 and continues as a cylinder bore 332 up to a narrowing joint socket 333. From the socket 333 to the conical bore 304 runs a cylindrical through bore 334.

The plug-in anchor 100 has the clamping head 130, the adjoining shaft segment 120 and - now new - an articulated ball 160 arranged on the other hand on the shaft segment 120, diametrically opposite the clamping head 130. The articulated ball 160 is located in the cylinder bore 332 and is thereby covered by a the articulation ball 160 also holds the spacer segment 340 arranged in the cylinder bore 332 free of play on the articulation socket 333. On the side facing the joint ball 160, the spacer segment 340 has a conical countersink 341. From a screw 350 screwed into the threaded bore 330, the spacer segment 340 receives a certain pressure in the direction of the joint ball 160. The shaft segment 120 penetrates the larger through hole 334, so that a structurally limited, lateral deflection of the plug anchor 100 is possible. The spacer segment 340 and the screw 350 are preferably made of plastic.

A modified alternative solution to the plug anchor 100 with the joint ball 160 attached directly to the shaft segment 120 is possible. Using a plug-in anchor 100 with an adjoining the shaft segment 120 thread segment 110 (see Figure 1), ^'which steering ball in a Ge 160 which sits a complementary threaded bore be¬, is screwed. The connection arrangement according to FIG. 15 can also be equipped with the centering sleeve 9 (see FIG. 4) instead of the clamping ring 900 used for centering in the radial groove 810. The function of this special connection arrangement is described below. Assume that an impression is taken on the jaw with two strongly divergent implants 1. First, an impression cap 300 with the laterally deflectable plug anchor 100 is placed on the implants 1. The clamping heads 130 slide under the locking webs 808, whereby the impression caps 300 are fixed on the implants 1; the counter shoulders 302 sit seamlessly on the implant shoulders 14. In accordance with the divergence of the implants 1 used, the impression caps 300 are also positioned divergent to one another. Now the impression tray 6 filled with impression compound 5 is pressed onto the jaw, whereby the inclined impression caps 300 are embedded in the impression compound 5 so as to be aligned (cf. FIG. Oa). After the impression material 5 has hardened, the impression tray 6 is lifted off. During the lifting, the shaft segments 120 and clamping heads 130 of the plug-in anchors 100 move out of the cylinder bores 805 after the clamping heads 130 have first overcome the locking webs 808. With the progressive lifting of the impression tray 6, the movable plug-in anchors 100 experience a deflection in order to compensate for the divergent starting position.

Figure 16

The connection arrangement is shown in the downward position after the impression has been taken (see FIG. Oc). The impression cap 300 is embedded in the impression tray 6 with the hardened impression material 5 and the manipulation implant 7, which has an external geometry analogous to the implant head 1, is already plugged together with the impression cap 300. On in this way the situation on the relevant jaw area has been obtained in the form of an impression Ab as a negative image with the manipulating implant 7 replacing the original implant 1. Now the production of the master model follows. The connection arrangement according to the invention is also used profitably during this working phase.

The impression cap 300 has the plug-in anchor 100 positioned axially and downward in its interior. A plug receptacle 700 is placed on the head 71 of the manipulation implant 7. The manipulation implant 7 and the plug receptacle 700 are preferably designed in one piece. The outer contour of the manipulation implant 7 with the plug-in receptacle 700 thus corresponds to the combination of implant 1 and

Secondary part - here cone-secondary part 8. Analog to the cone-secondary part 8, which acts as the counterpart of the connection arrangement, the plug-in receptacle 700 is designed (see FIG. 12). Thus, the plug-in receptacle 700 has a conical pillar 783 which is complementary to the conical bore 304 in the impression cap 300 and which, on the outside, merges with the manipulation implant 7 via the implant shoulder 774. On the upper side, the plug-in receptacle 700 closes off with the conical pillar shoulder 785. Furthermore, the plug-in receptacle 700 has an axially and vertically extending, blind-hole-shaped cylinder bore 705 with the inner wall 706, on which the raised latching web 708 rotates radially.

When assembled, the counter shoulder 301 of the impression cap 300 sits seamlessly on the implant shoulder

774. The conical pillar 783 of the plug-in receptacle 700 is in the inserted in the impression cap 300 conical bore 304 so that the conical abutment shoulder 785 is near the top of the conical bore 304. The carrier segment 140 of the plug-in anchor 100 as well as entirely its shaft segment 120 and clamping head 130 are partially inserted into the cylinder bore 705. When the manipulation implant 7 and the impression cap 300 are connected, the clamping head 130 passes over the latching web 708, is pressed together and expands behind the latching web 708, so that the latching flank 131 is locked under the latching web 708. In connection arrangements in the downward position, an internal thread 811 can advantageously be provided for fastening to octa and cone secondary parts 2, 8. On the other hand, a cylinder bore 705 is sufficient for the plug receptacles 700 on manipulation implants 7. It is also sufficient to dimension the geometric relationships in such a way that the insertion force F _s or separating force sufficient for taking the impression is obtained

force F _τ . After casting the master model, using the existing impression Ab with the attached manipulation implant 7, the plug connection between the impression cap 300 and the manipulation implant 7 can be released again in a simple manner. The master model thus obtained serves as a positive image of the original situation from the patient's mouth for the subsequent creation of the superstructure.

The following FIGS. 17 to 20 show different, previously described designs of the connection arrangement in the downward position, which are now used for fastening a single crown Zk. Figure 17

This embodiment represents a constructive reversal of the connection arrangement of FIG. 8 using a cone secondary part 8 serving as a plug-in receptacle from FIG. 12. Accordingly, the arrangement according to FIG. 17 consists of the implant 1, the cone secondary part 8 with the plug-in receptacle Cone pillar 83 and a crown cap 500. In the same way as in the impression cap 300 according to FIG. 12, the plug-in anchor 100 is designed and arranged in the interior of the crown cap 500.

Since it is a matter of fastening a tooth crown Zk, care will be taken to ensure that the separating force F _τ 'required for pulling off the tooth crown Zk is significantly greater than the separating force F _τ when taking an impression. In the example here, the increased separating force F _τ 'is set by narrowing the catch web diameter to the value d _R '. This means that different cone secondary parts 8 are required for the impression taking and for the tooth crown attachment. An alternative possibility to provide differentiated separating forces F _τ or F _τ 'for both tasks is to use different plug-in anchors 100, ie the To change the geometry or the material shadow.

If the tooth crown Zk is placed on the implant 1, the connecting part 502 of the crown cap 500 moves over the conical pillar 83 until the counter shoulder 501 on the Implant shoulder 14 sits. The clamping head 130 passes through the cylinder bore 805 synchronously and finally jumps under the locking web 808. To do this, the plug-in force F _s ' must be applied. It is easier to implement and there is no reason not to set an increased insertion force F _s 'with an increased separating force F _τ '. If the plug connection between the tooth crown Zk and the implant 1 is to be released, for example for cleaning, the clamping head 130 must be underneath

Apply the larger separating force F _τ 'over the obstacle of the locking web 808.

Fig r18

A conical secondary part 8 according to FIG. 13 and a crown cap 500 with a transversal screw connection, in a modified form from FIG. 11, are used for this connection arrangement, also a construction example for fastening an individual tooth crown Zk. A conical secondary part 8 is inserted into the implant 1, which has a shoulder part 86 resting on the implant shoulder 14, a radial groove 810 in the base cone 81 for receiving a clamping ring 900 and a radial groove 809 for the attachment of the tip 513 of a stud screw 516 for the transverse one Has screw connection. The tooth crown Zk consists of the framework-forming crown cap 500 with the transversal screw connection, which largely covers the crown cap 500

Gold sprue Go and the latter covering porcelain cover Po.

The plug-in anchor 100, which is directed downward with its clamping head 130, sits with the holding plug-in pin 150 in the Press-fit cylinder bore 522, and the upper part of the support segment 140 adjoining the pin 150 sits in the cylinder bore 511 adjoining the cylinder bore 522 coaxially and at the bottom. The shaft segment 120 with the clamping head arranged at the bottom extends downward from the support segment 140 130. The crown cap 500 itself consists of the cap housing with the conical bore 504 which adjoins the cylinder bore 511 coaxially, starting from the latter and beginning to open downwards. The crown cap 500 has a compact, thickened material leg 510 on the side, in which a downward one Pointing, continuous threaded bore 515 directed towards the radial groove 809 provided in the conical pillar 83 is present. A stud screw 516 is positioned in the threaded bore 515, the rounded tip 513 of which tangentially meets the upper edge of the radial groove 809, repels it and thus causes the crown cap 500 to be pressed onto the implant shoulder 14. A screwing tool can be used to engage the head slot 514 of the stud screw 516 for adjustment.

If the tooth crown Zk is placed on the implant 1 and the transverse screwing is carried out, then an additionally secured fixation of the tooth crown Zk on the implant 1 has been achieved. When the tooth crown Zk is attached, the snap connection between the clamping head 130 and the conical pillar 83 is first established; the latching flank 131 has jumped under the latching web 808. Then the stud screw 516 is screwed into the threaded bore 515 until the tip 513 of the stud screw 516 penetrates into the radial groove 809 and against the upper edge of the radial groove 809 bumps, the securing effect of the transversal screwing occurs. As a result of the lateral collision of the stud screw 516 and the conical pillar 83, the entire crown cap 500 with the tooth crown Zk applied is pressed in the direction of the implant 1. The counter shoulder 501 sits seamlessly on the implant shoulder 14.

The crown cap 500 with its conical bore 504 is guided on the conical outer contour of the conical pillar 83. A centering of the entire connecting arrangement is further effected by the clamping ring 900 and the support segment 140 which is positively seated on the one hand in the cylinder bore 511 and on the other hand held in the cylinder bore 805 Waigen tilting of the crown cap 500, caused by the force of the stud 516, opposes the support segment 140. The precise centering of the framework-forming crown cap 500 and the tooth crown Zk carried by it can therefore not be impaired by the transverse screw connection. If it is necessary to remove the tooth crown Zk, the first thing to do is to loosen the stud screw 516 and then the snap connection while applying the separating force F _τ '. In view of the additional securing provided by the transversal screw connection, it is not absolutely necessary here to take the precautions described above in order to increase the separation compared to F _τ

force F _τ '.

Figure 19

In contrast to Figure 18 - otherwise the constructions are completely identical - there is a standard according to crown cap 500 without the additional transversal screwing, and in the interior of the conical pillar 83 there is an internal thread 811 in front of the locking web 808 (cf. FIG. 14). The tooth crown Zk is now fixed on the implant 1 only by the plug-in connection between the plug-in anchor 100 and the latching web 808 in the interior of the cone secondary part 8. The radial groove 809 and the internal thread 811 currently have no function, ie they are not used in the example here. In view of the greater load on the plug connection when fastening a tooth crown Zk - compared to a less loaded impression cap 300 - one has to increase the height

Set separation force F _τ '. The relevant ones

Possibilities have already been explained. It is particularly useful to use a plug-in anchor 100 with an enlarged clamping head 130 in relation to the impression. Since the plug anchors 100 are firmly connected to the crown caps 500 in a press fit between the plug pin 150 and the cylinder bore 522, any risk of confusion is excluded.

Figure 20

The tooth crown Zk is screwed occlusally to the conical secondary part 8 inserted into the implant 1; the plug anchor 100 is now completely eliminated. In addition, an occlusal screw 400, in the form of a cap screw, as well as an access hole Zu through the modeled tooth Za to the crown cap 500 and a countersink 530 on the upper side of the crown cap 500 are required. Again, a standard crown cap 500 is used, which also has the applied gold sprue Go and porcelain coating Po to the tooth crown Zk was built up. The vertical access bore Zu runs from the occlusal surface of the tooth crown Zk through all layers of the tooth Za modeled on the crown cap 500. This access hole is for the insertion and also for the possibly necessary removal of the

Occlusal screw 400 from the Zk tooth crown is required. Once the screw connection has been made, the access hole Zu is closed with an appropriate mass.

The countersink 530 provided on the top of the crown cap 500 serves for receiving and as a seat for the head

420 of the occlusal screw 400. The threaded segment 410 of the occlusal screw 400 penetrates the cylinder bore 522 located in the ceiling of the crown cap 500 and engages in the internal thread 811, which for this purpose is in the

Cone pillar 83 is provided. The head 420 has an engagement contour for attaching a screwing tool

421 in the form of a slot, a cross slot or a multiple inner edge. With this type of connection, the detent web 808, the radial groove 809 and the countersink 812 have no function, so that these could be omitted. The clamping ring 900 inserted into the radial groove 810 is not absolutely necessary, but it does promote the centering of the conical secondary part 8.

The problem of the insertion or separation forces F _s , F _s '; F _τ , F _τ 'naturally does not arise here. The plug connection, which embodies the essential subject matter of the invention, is contained only in parts in the fastening of a tooth crown Zk just illustrated by occlusal screwing alone. Nevertheless, the invention also includes these connections Type of application, since in the previous work phases - for example taking an impression and producing the master model - a complete set of the alternatively available connecting elements is used and part of the previously used connecting elements are retained for the final crown fastening. This is also evident from the sequence of figures 21a to 32e to be dealt with.

Figures 21a to 2e

The sequence of figures aims to illustrate the individual, subsequent work phases, in which the connection arrangement according to the invention can be used efficiently by the dentist and the dental technician, in a complete overview. The system character of the elements of the connection arrangement also emerges from the illustration, which is evident in the diverse structural modifications, the variable usability and the ability to combine the elements. In the interest of the overview, all connection arrangements are only shown in the upward position; of course, the analog reversals can also be implemented as a downward position.

FIGS. 21a to 24e deal with the phase of taking the impression in order to geometrically record the mouth situation in the area of an inserted implant 1. The initial stage is in each case the mouth area with the implant 1 inserted in the jawbone K (images a). The final stage is the one placed on the impression cap 300. Pressed impression spoons 6 filled with impression compound 5 (pictures e).

FIGS. 25a to 28e contain examples for the production of master models Mo and tooth crowns Zk, which are finally fixed in the patient's mouth, using conical secondary parts 8. The initial stage is the placement of the manipulation implant 7 on the impression Ab (images a). The final stage is formed by the finished tooth crown Zk (images e) attached to the implant 1 inserted in the patient's mouth.

FIGS. 29a to 32e show further examples for the production of master models Mo and tooth crowns Zk and the fastening of the latter in the patient's mouth. Both octa secondary parts 2 and cone secondary parts 8 are used here. The starting stage is the already taken impression Ab (images a) and the final stage is the tooth crown Zk attached to the implant 1 in the mouth (images e). The essentials of the individual figures with the respective detailed images are listed below as follows:

Figure 21

Figure a: Implant 1 inserted in jawbone K;

B: Axially symmetrical conical secondary part 8 with a reduced base cone 81 and the centering sleeve 9 are screwed into the implant 1;

Figure c: Plug anchor 100 is inserted into the cone secondary part 8 and impression cap 300 is attached;

Image d: impression cap 300 is attached;

Figure e: Taking an impression, i.e. impression tray 6 filled with impression compound 5 is pressed on;

Figure 22 Figure a: Implant 1 inserted in jawbone K; Image b: angled cone secondary part 8 and

Centering sleeve 9 are screwed into the implant 1; Figure c: Plug anchor 100 is inserted into the cone secondary part 8; Image d: bevelled impression cap 300 is attached; Figure e: Taking an impression, i.e. filled with impression compound 5

Impression tray 6 is pressed on;

Figure 23

Figure a: Implant 1 inserted in jawbone K; Image b: Octa secondary part 2 with the plug-in anchor 100 already screwed in is screwed into the implant 1;

Figure c: impression cap 300 with connector part 302 complementary to octasegment 23 is attached; Image d: impression cap 300 is attached; Figure e: Taking an impression, i.e. impression tray 6 filled with impression compound 5 is pressed on;

Figure 24

Figure a: Implant 1 inserted in jawbone K; Figure b: Axially symmetrical conical secondary part 8 with radial groove 809 for possible later transverse screwing and with a reduced base cone 81 and the centering sleeve 9 are screwed into the implant 1; Figure c: Plug anchor 100 is inserted into the cone secondary part 8;

Image d: impression cap 300 with connection part 302 complementary to cone pillar 83 is attached; Figure e: Taking an impression, i.e. impression tray 6 filled with impression compound 5 is pressed on;

Figure 25

Fig. A: Plug-in anchor 100 is screwed into the conical pillar 783 of the one- or two-part manipulation implant 7 and inserted together into the impression Ab, ie into the impression cap 300 embedded therein with the complementary connecting part 302; Image b: manipulation implant 7 and impression Ab are connected; Figure c: the standard crown cap 500 with the countersink 530 and Cylinder bore 522 placed for later insertion of occlusal screw 400;

Image d: Sitting on the master model Mo, the crown cap 500 is screwed to the occlusal screw 400, the production of the dental crown Zk can begin;

Figure e: The finished tooth crown Zk is screwed onto the implant 1 with the occlusal screw 400;

Figure 26

Figure a: Push-in anchor 100 is screwed into the angled cone pillar 83 or 783 of the one- or two-part manipulation implant 7 and together into the impression Ab, i.e. inserted into the beveled impression cap 300 with the complementary connection part 302 embedded therein; Image b: manipulation implant 7 and impression Ab are connected;

Picture c: on the master model Mo the beveled

Crown cap 500 with countersink 530 and cylinder bore 522 for later insertion of occlusal screw 400; Figure d: Sitting on the master model Mo, the beveled crown cap 500 is screwed to the occlusal screw 400 and the production of the tooth crown Zk can begin; Figure e: The finished tooth crown Zk, which is inclined to the implant 1, is seated on it with the

Occlusal screw 400 screwed;

Figure 27

Figure a: identical to Figure 25, Figure a; Image b: identical to Figure 25, image b;

Figure c: a standard crown cap 500 is placed on the cone pillar 83 or 783 protruding from the master model Mo; Image d: the crown cap 500 is seated on the conical abutment 83 or 783 and the production of the tooth crown Zk can begin; Figure e: the finished tooth crown Zk is cemented firmly on the implant 1;

Figure 28

Image a: identical to Figure 26, image a; Image b: identical to Figure 26, image b;

Picture c: on the master model Mo the beveled

Crown cap 500 fitted; Image d: the beveled crown cap 500 is attached to the master model Mo and the production of the tooth crown Zk can begin; Image e: the finished, inclined to the implant 1

Tooth crown Zk is cemented sitting on it;

Figure 29

Figure a: as the impression Ab there is an impression cap 300 embedded in the impression slot 6 with a 24 inner edge in the connection part 302; Image b: the plug anchor 100 is seated firmly in the octasegment 23 or 73 of the manipulation implant 7 and is thus inserted into the impression Ab; Image c: on the master model Mo with the outstanding octasegment 23 or 73 and the plug anchor 100, a crown cap 500 with an inner one

Snap-in bar 508 and a 24 inner edge 503 attached; Image d: the crown cap 500 is attached to the master model Mo and the production of the tooth crown Zk can begin;

Figure e: the finished tooth crown Zk is fastened to the implant 1 with the plug-in anchor 100;

FIG. 30 picture a: as impression Ab there is an impression cap 300 embedded in impression tray 6 with a conical bore 304 in connection part 302; Image b: fixed in the conical pillar 83 or 783 of the manipulation implant 7, which has a radial groove 809 for a possible later transverse screw connection, the plug anchor 100 is seated and is thus inserted into the impression Ab; Image c: on the master model Mo with the protruding cone pillar 83 or 783 and the plug anchor 100, a crown cap 500 with an inner one

Locking web 508 and a conical bore 504 attached; Image d: the crown cap 500 is attached to the master model Mo and the production of the tooth crown Zk can begin; Figure e: the finished tooth crown Zk is fastened to the implant 1 with the plug-in anchor 100;

Figure 31 Figure a: identical to Figure 30, Figure a; Image b: identical to Figure 30, image b;

Figure c: A crown cap 500 with the attached material leg 510 for the transversal screwing is placed on the conical pillars 83 and 783 protruding from the master model Mo;

Picture d: the crown cap 500 is attached to the master model Mo and screwed transversely with the stud screw 516; so the production of the tooth crown Zk can begin; Figure e: the finished tooth crown Zk is fastened on the implant 1 by the transversely engaging stud screw 516;

Figure 32 Figure a: identical to Figure 29, Figure a; Image b: identical to Figure 29, image b;

Image c: identical to FIG. 29, image c, but with a different type of crown cap 500, which is provided for the manufacture of a provisional tooth crown Zk;

Image d: the crown cap 500 is attached to the master model Mo and the production of the provisional tooth crown Zk can begin, - image e: the provisional tooth crown Zk is fastened to the implant 1 with the plug-in anchor 100.

In addition to the previously described constructive modifications to the elements of the connection arrangement and to the combination possibilities shown so far, further variations in design and interchangeability can be realized. The following should also be expressly mentioned here: regardless of the upward or downward position of the provided plug anchor 100, the manipulation implants 7 can already contain the conical pillar 83, 783 or the octasegment 73, 23 in their head 71 as firmly integrated components or these components are insertable; - For latching for the clamping head 130, instead of a latching shoulder 307 or a latching web 308, 508, 708, a latching recess could also be machined into the corresponding inner wall; - The plug-in anchor 100 could form a piece with the secondary part 2, 8, the impression cap 300, the crown cap 500 or the manipulation implant 7 or could also be fastened in or on these parts by gluing, soldering or a positive connection; - It is also possible to manufacture the clamping head 130 from elastic solid material;

- Instead of the octa secondary part 2 with its octagonal octasegment 23 and the complementary contour as a 24-in corner 403 in the connection part 302, 502 of the impression cap 300 or crown cap 500, other non-circular geometries, e.g. incorporate a hexagon to prevent rotation; such rotation safeguards can also be attached to cone secondary parts 8;

- In the secondary parts 2, 8, one can also provide a threaded bore 24, 84, an adjoining latching web 808 or the equivalent contours and an adjoining section of a cylinder bore 805 ending in a blind hole, so that the threaded segment can be selected 110 or the clamping head 130 of the plug-in anchor 100 or an occlusal screw 400 can be used;

the carrier segment 140 and the upper part of the inner wall 706, 806 which come into engagement therewith can be provided with mutually complementary grooves in order to enable positioning; the connection arrangement according to the invention can be used not only in the illustrated implant shape, but in all possible configurations.

e

Claims

claims

1. Detachable plug-connection arrangement for implant-supported dentures with an elastic plug-in anchor that can be inserted axially into a plug-in receptacle, characterized in that a) the plug-in anchor (100) indirectly or directly vertically into the inserted implant (1) or one for the purpose of Production of a master model (Mo) of the manipulation implant (7) can be used, the elastic clamping head (130) is at the top and projects above the implant (1) or the manipulation implant (7) - referred to as the upward position - or b) the plug-in anchor (100) can be used indirectly or directly vertically inside an impression cap (300) or a crown cap (500) and the clamping head (130) is located at the bottom - referred to as the downward position - and c) in the upward position inside the impression cap (300) or the crown cap (500) as a lock for the

Clamping head (130) a locking shoulder (307), a locking web (308, 508) or a locking trough is provided or d) in the downward position directly in the implant (1) or manipulation implant (7) or in a secondary part (2 , 8) ^' a locking web (708, 808), a shoulder or a recess is provided as a locking means for the clamping head (130).

2. Plug connection arrangement according to claim 1, characterized in that a) as a locking device for the clamping head (130), instead of the locking shoulder, the web or the trough (307, 308, 508 708, 808), an inner wall (306, 506, 706, 806) constricting the clamping head (130) ) is formed in the respective counterpart of the plug-in connection arrangement, as a result of which, together with the clamping head (130) under spreading spring tension, a sufficient static friction is established for the connection and, as option b), the inner wall (306, 506, 706 , 806) and / or the

The outer surface of the clamping head (130) is provided with a surface roughness in order to increase the friction between the two.

3. Plug-connection arrangement according to claim 1, characterized in that a) the plug (100) from a final, thickened clamping head (130) and a tapered shaft segment (120) carrying the clamping head (130), to which a threaded segment is directly attached (110), connect a pin segment (150) or a joint ball (160) or b) the clamping head (130), the shaft segment (120), to which a thickened carrier segment (140) directly adjoins, on the other hand the threaded segment (110 ) or the pin segment (150) attaches, and there is a c) at the transition between the clamping head (130) and the shaft segment (120) a locking flank (131) is formed and as an option d) the clamping head (130) is divided into several elastic anchor lamellae (133) by dividing slots (132) extending from the clamping head (130) into the shaft segment (120), at the transition between the shaft segment (120) and the clamping head ( 130) a support shoulder (121) is provided and above the support shoulder (121) in the direction of the clamping head (130) there is a radially circumferential recess (122).

4. Plug-in connection arrangement according to claim 1, characterized in that in the upward position a) in the implant (1) a secondary part (2, 8) is used with or without a rotationally locking contour; b) an octa secondary part (2) is provided as the secondary part, which on a ledge (25), approximately in the amount of

Located implant shoulder (14), into an octagonal octasegment (23), which ends on the top with an octachain shoulder (26), the octagonal contour being analogously replaceable by a non-circular geometry; c) or a cone secondary part (8) is provided, which has a cone pillar (83) projecting above the implant shoulder (14), which ends on the upper side with a cone pillar shoulder (85); d) in the secondary part (2, 8), a top hole, axially downward, blind hole-shaped threaded bore (24, 84) for receiving the threaded segment (110) of the plug anchor (100) or the threaded segment (410) of an occlusal screw (400 ) is arranged.

5. plug-and-socket connection arrangement according to claim 1, characterized in that in the downward position a) in the implant (1) a secondary part (2, 8) is inserted with or without a rotationally locking contour; b) an octa secondary part (2) is provided as the secondary part, which on a ledge (25), approximately at the height of the implant shoulder (14), merges into an octagonal octane segment (23) which is provided on the top with an octane shoulder (26) closes, the octagonal contour being analogously replaceable by a non-circular geometry; c) or a cone secondary part (8) is provided which has a cone pillar (83) projecting above the implant shoulder (14) and terminating at the top with a cone pillar shoulder (85); d) in the secondary part (2, 8) there is a blind hole-shaped cylinder bore (705, 805) with the inner wall (706, 806) that is accessible from above and extends axially downward; e) is located on the inner wall (706, 806), radially circumferential, a locking web (708, 808), a locking shoulder (307) or a locking trough for the snap-in reception of the clamping head (130) and f) on the octane shoulder (26) or A countersink (812) is provided on the conical abutment shoulder (85) for partially receiving the support segment (140) present in the central part of the plug-in anchor (100).

6. Plug connection arrangement according to claim 4 or 5, characterized in that in the secondary parts

(2, 8) a) on the octasegment (23) or on an analog segment which is not circular, or on the cone pillar (83), an outer circumferential radial groove (809) is incorporated for a possible transverse screw connection; b) at the transition between the base cone (21, 81) and the octasegment (23) or the analog segment or the cone pillar (83) a shoulder section (86) is provided in the manner of a wing attachment, which has an inner circular ring of the implant shoulder (14 ) occupied and c) on the outer circumference of the base cone (21, 81), at the level of the implant shoulder (14), a radial groove (810) is provided for receiving a clamping ring (900) or a centering for centering in the implant cone (12) ¬ sleeve (9) is used.

7. Plug-in connection arrangement according to claims 4 to 6, characterized in that in the secondary parts (2, 8) are present: a) on the octane shoulder (26) or on the conical pillar shoulder (85) the countersink (812) , b) the vertically extending, blind-hole-shaped cylinder bore (705, 805), c) on the inner wall (706, 806) of the cylinder bore (705, 805) an internal thread (811) which extends from the countersink (812) to the locking web ( 708, 808), the locking shoulder (307) or the locking trough, d) the shoulder section (86) and e) the radial grooves (809 and 810).

8. Plug-in connection arrangement according to claim 1, characterized in that the impression cap (300) consists of: a) a cap housing open at the bottom, b) a counter shoulder (301) complementary to the implant shoulder (14) and c) a connecting part (302) with complementary inner contour which corresponds to the octasegment (23) projecting beyond the implant shoulder (14) or to the analog segment or the cone pillar (83) which is not circular, namely with an inner octagon (27) or an analog geometry or one Conical bore (304) and that as option d) the impression cap (300) in view of tolerances, based on the height of the ledge (25) of the octa secondary part (2) or the geometrically analogous secondary part, on the inner edge of the counter shoulder (301) has a radially circumferential recess (309).

9. Plug connection arrangement according to claim 8, characterized in that the impression cap (300) for the upward position a) one on the inner octagon (27) or the analog

Geometry or the conical bore (304) adjoining and extending axially upward, blind hole-shaped cylinder bore (305) for receiving the plug-in anchor (100) used in the secondary part (2, 8) and b) on the inner wall (306) of the cylinder bore (305), radially encircling a locking shoulder (307), a web (308) or a trough for the snap-in reception of the clamping head (130) and that the impression cap (300) for the Downward position c) at the bottom of the conical bore (304) has a narrowed cylindrical bore (311) for partially receiving the support segment (140) of the plug-in anchor (100); d) a threaded bore (312) for receiving the threaded segment (110) of the plug-in anchor (100) or e) a cylinder bore (322) as a fit for receiving the plug-in pin (150) of the plug-in anchor (100) or f) a narrowed through-hole ( 334) as a passage for the shaft segment (120) of the plug-in anchor (100) and an articulated socket (333) arranged above the through hole (334) for receiving the articulated ball (160).

10. Plug connection arrangement according to claim 9, characterized in that a) extends upward from the joint socket (333) an axial cylinder bore (322) which merges into a threaded bore (330) opening at the top of the impression cap (300) and b ) a screw (350) is inserted into the threaded bore (330) and exerts pressure on a spacer segment (340) inserted between the screw (350) and the joint ball (160).

11. Plug connection arrangement according to claim 1, characterized in that the crown cap (500) consists of: a) a cap housing open at the bottom, b) a counter shoulder (501) complementary to the implant shoulder (14) and c) a connecting part (502) with a complementary inner contour, which protrudes beyond the octane segment (23) or the this does not correspond to a circular, analog segment or the cone pillar (83), namely with an inner octagon (27), a 24 inner edge (503) or the analog geometry or a cone bore (504).

12. The plug connection arrangement according to claim 11, characterized in that the crown cap (500) for the upward position a) is located on the inner octagon (27), the 24 inner edge (503) or the analog geometry or the conical bore (304). adjoining and axially upward extending, blind-hole-shaped cylinder bore (505) for receiving the plug-in anchor (100) inserted in the secondary part (2, 8) and b) on the inner wall (506) of the cylinder bore (505), radially circumferential one, locking shoulder (507) , a locking bar (508) or a locking recess for the snap-in mounting of the

Clamping head (130) is provided; and that the crown cap (500) for the downward position c) at the bottom of the conical bore (504) has a narrowed cylindrical bore (511) for partially receiving the carrier segment

(140) of the plug anchor (100); d) a threaded bore (512) for receiving the threaded segment (110) of the plug anchor (100) or e) has a cylinder bore (522) as a snug fit for receiving the plug pin (150) of the plug anchor (100).

13. Plug connection arrangement according to claim 11, characterized in that the crown cap (500) a) in view of tolerances, based on the height of the ledge (25) of the octa secondary part (2) or the analog secondary part, on the inner edge of the counter shoulder (501) has a radially circumferential recess (509); b) for a transversal screw connection has a lateral, compact material leg (510), in which there is a threaded hole (515) for receiving a stud screw (516), which is threaded onto the radial groove (809) on the secondary part (2, 8) or is directed towards the radial groove (222) on the inserted screw bolt (200); c) for an occlusal screwing with a modeled tooth (Za) has a countersink (530) in the ceiling, from which an axial cylinder bore (522) extends into the interior of the crown cap (500), whereby the head (420) an inserted occlusal screw (400) receives its seat and the threaded segment (410) of this occlusal screw (400) penetrates the ceiling.

14. Plug connection arrangement according to claim 13, characterized in that a) the screw bolt (200) with its threaded segment (210) is screwed onto an octasegment (23) or the analog segment; b) the sleeve segment (220) of the screw bolt (200) in the cylinder bore (505) of the crown cap (500)

Has seat; c) the radial groove (222) on the screw bolt (200) is aligned with the threaded bore (515) located in the material leg (510) and d) the sleeve segment (220) has a threaded bore (221) accessible from above.

15. Plug connection arrangement according to claim 1, characterized in that for inclined positions instead of axially symmetrical cone secondary parts (8), impression caps (300) and crown caps (500) angled cone secondary parts (8), impression caps (300) with abge ¬ bevelled connection part (302) or crown caps (500) with bevelled connection part (502) are provided.

16. Plug connection arrangement according to claim 1, characterized in that it is used: a) for taking impressions on implants (1) used in the jawbone (K) in order to obtain the impression (Ab) and / or b) for producing the master model (Mo) and / or c) for fastening tooth crowns (Zk) or a more complex superstructure on the implants (1) inserted in the patient's mouth.

17. Plug connection arrangement according to one of the preceding claims, characterized in that a) for the taking of the impression and the manufacture of the master model (Mo) for removing the impression caps (300), a separating force (F _τ ) is set and man b) for a fixed tooth crown (Zk) provides an increased separating force (F _τ ') by using materials with a higher clamping effect and reduced elasticity or by changing the geometrical proportions.

18. Plug connection arrangement according to claim 17, characterized in that an increased separating force

(F _τ ') is provided by

a) the clamping head diameter is increased from (d _κ ) to (d _κ ') and / or b) the locking bar diameter is narrowed from (d _R ) to (d _R ') and / or c) the slot width (b _s ) in the clamping head (130 ) and shaft segment (120) narrowed to (b _s ') and / or d) the slot length (l _s ) in the clamping head (130) and shaft segment (120) are shortened and / or e) the angle of rise (α) the locking shoulder (307, 507, 707, 807) or the locking bar (308, 508, 708, 808) approximates the horizontal.