WO2019110671A1 - Dental prosthetic arrangement and method for producing a dental prosthetic arrangement - Google Patents

Abstract

The invention relates to a dental prosthetic arrangement and to a method for producing a dental prosthetic arrangement, having an abutment which comprises a main part (GK), as a first part for ensuring the mechanical stability of the abutment, capable of being connected on its underside (US) to an implant (IM), wherein the upper side (OS) of the main part is provided with an elastic cover (UZ), as a second part, that is rigidly connected to said upper side (OS) of the main part (GK).

Description

 Dental prosthetic assembly and method of making a dental prosthetic assembly

The invention relates to a dental prosthetic arrangement and a method for producing a dental prosthetic arrangement.

Arrangements for dental prostheses are known from the prior art, in which a non-rigid, in particular elastic connection is made between a dental crown or a denture and a carrier anchored in the jaw of a patient for receiving impact forces.

For example, DE 10 2006 021 181 B3 discloses a dental prosthesis carrier implant which consists of a carrier post and a carrier element arranged thereon with a certain amount of movement for receiving a tooth crown or a dental prosthesis. Between the support post and the support element, a support element is disposed axially away from the support post and away from the support post. The support post and the support element are connected to one another via an elastomeric material which, after introduction in liquid form, is tied off in place between the support post and the support element and completely fills the gap between the support post and the support element.

However, such a configuration of a dental prosthesis carrier implant is very complicated, in particular by the incorporated spring element.

EP 0 382 771 B1 discloses a pin for attachment to an endosteal part of a dental implant which has a central core with a head part and a lower part provided with fastening means for fastening the pin to the implant. Furthermore, a cap is provided which is true to cover at least a portion of the head portion, further comprising a first elastic member disposed at the interface between the cap and the central core at the upper end of the head portion, the unit being configured to provide relative movement of the cap with respect to the central core, and wherein laterally arranged holding members are provided in order to limit the vertical relative movement of the cap with respect to the central core. Furthermore, a second elastic member is provided, which is arranged at the interface between the cap and the central core in a slot located at the periphery of the head portion of the central core at the level of the lower end of the cap, for vertical support and to allow lateral support of the cap.

This embodiment of a pin is very expensive, which in addition from a use in connection with conventional implants is not readily apparent.

Based on this prior art, the inventor has now taken on the task to provide a dental prosthetic arrangement or to provide a method for producing a dental prosthetic arrangement, so that a damping effect can be provided in a simple manner, without complicated mechanical structures to have access.

This object is solved by the features of claims 1 and 15, respectively. Further advantageous embodiments of the invention are each the subject of the dependent claims. These can be combined in a technologically meaningful way. The description, in particular in conjunction with the drawing, additionally characterizes and specifies the invention. According to the invention, there is provided a dental prosthetic assembly comprising an abutment comprising, as a first part for determining its mechanical stability, a base body which is connectable to an implant on its underside and the second part having a deformable coating on its upper side is provided, which is firmly connected to the top of the body.

Accordingly, it is provided in the invention to carry out the dental prosthetic arrangement with a two-part abutment, in which a basic body designed as a base defines the mechanical stability of the abutment, while the overlying coating of elastic material, the desired damping between an overlying zahnprothetischen Creation and an underlying implant creates. The deformable, for example, elastic coating is firmly connected to the base body, so that only by choosing the material of the coating, the setting of a desired hardness is made possible, without having to provide complicated mechanical structures.

According to one embodiment of the invention, the base body is made of metal, polymer or zirconium dioxide.

Metallic abutments are widely used in dental technology, so that the invention can also be used with this material but also with the other materials mentioned.

According to a further embodiment of the invention, the coating is made of silicone, a soft-elastic mass or a rubber-elastic mass. Alternatively, the coating may be made of a deformable mass, in particular a thermoplastic polymer, preferably PEEK. In addition to the manufacture of silicone, whose hardness can be adjusted, for example, by the addition of hydrofluoric acid, it is also possible to use other soft or rubber-elastic masses. In general, these are substances that are deformable so that the material can be displaced to allow, for example, applying and holding a denture over a projecting component.

In addition to the above-mentioned material, however, it is also possible to use, for example, deformable materials which are not based on the principle of displacement. In this case, in particular thermoplastic materials are provided, in particular PEEK, which are slightly deformable and can be applied to a base body as a coating.

According to a further embodiment of the invention, the coating is polymerized, over-pressed, sprayed on, glued or bonded via a bonding agent.

Accordingly, it is possible to firmly connect the coating with the body, so that it can not be detached from the body when using the tooth-prosthetic arrangement.

In particular, when using thermoplastic polymers, a hot pressing of the coating on the body lends itself to. Here, too, a secure connection and coating and body can be achieved.

It may be possible in other embodiments, to provide the base body with a primer before applying the coating. The adhesion promoter can be a chemical compound with the material of the coating received. Accordingly, the connection between the coating and the body can be improved. Furthermore, the base body may be roughened on the surface facing the cover on its surface. With the use of thermoplastic polymers, it has proven useful to roughen the surface to be hot-pressed in order to achieve better adhesion of the thermoplastic material to the base body. The base body can be introduced into a mold, with a correspondingly shaped muffle shape making it possible to produce a coating in the desired geometric shape. In this case, it is provided, in particular, to form the coating in the form of an outer cone, so that a prosthesis can be placed on the coating by means of cone inhibition and held thereon. According to a further embodiment of the invention, the upper side of the main body is formed with cylindrical, conical or oblique surfaces, whereby mixed forms are conceivable.

The design of the upper side of the main body can be designed differently depending on the application, in particular about one longitudinal axis rotationally symmetrical configurations are easy to produce. The layer thickness of the coating can be selected according to the requirements for the formation of a male part. According to a further embodiment of the invention, an opening on the base body and an opening on the coating are formed opposite to the implant. Accordingly, it is possible to introduce into the dental prosthetic arrangement a fastening means, for example a screw, occlusally or to insert a screwdriver in order, for example, to fix the abutment on an implant.

According to a further embodiment of the invention, the coating is provided with a retention element.

As a retention element, for example, a circumferential collar can be used, which is formed in the elastic material of the coating. Accordingly, the coating can be issued in such a way that, when used as a male, the desired withdrawal force of a dental prosthesis or a crown is established. According to a further embodiment of the invention, the base body is formed from the underside with an annular portion, the outer edge of which can be designed as a driving profile.

Accordingly, the coating is not completely guided to the bottom of the basic body, so that at least partially the material of the base body is exposed at the outer edge. At these sections, a driving profile can be formed, which can be used as a tool approach example of a wrench. Alternatively or additionally, the basic body can also be hollow-shaped along its longitudinal axis and be provided on an inner surface with a driving profile. Accordingly, a tool attachment is formed on an inner surface of the base body, so that, for example, a screwdriver configured with a corresponding entrainment profile can be inserted in the occlusal direction in order to fasten the abutment to an implant. According to a further embodiment of the invention, the base body is provided on its underside with an internal thread, which can form an angled abutment with a preferably angled lower part with a corresponding external thread.

The attachment on the lower part can be achieved with the above-described entrainment profiles, wherein in addition to the use of an angled lower part, a straight abutment can be formed. According to a further embodiment of the invention, a connecting element for a straight abutment is formed on the underside. Furthermore, the tooth-prosthetic arrangement can be designed for fastening in an implant with the aid of an occlusal screw. Thus, the use of the dental prosthetic arrangement according to the invention is possible with almost all known implant systems, wherein known as connection element geometries for fixing an abutment can be used in an implant, which may comprise, for example, structured outer surfaces or cams.

According to a further embodiment of the invention, the coating is fixed in a prosthesis or crown. In this case, the coating can be provided with a cap which can be inserted into a prosthesis or crown. In particular, together with the cap, the system of male and female mold known in the dental art is transferred to the arrangement according to the invention. The coating forms the male, whereby instead of a cap, this can also come directly to lie in the prosthesis or crown. According to the invention, a method is also provided for producing a dental prosthetic arrangement with an abutment which as a first part for fixing its mechanical stability comprises a base body having on its underside a fastening means for an implant and on its upper side as a second part an elastic coating is provided, which is firmly connected to the top of the body by polymerization or adhesive bonding.

Furthermore, a one-piece implant is also provided, which has a construction post for receiving a crown or prosthesis, which is provided on its upper side with an elastic coating which is connected to the upper side of the basic body by polymerization, adhesive bonding or via a bonding agent is firmly connected. The invention will be explained in more detail with reference to the drawing with reference to some embodiments. Show it:

1 shows a first embodiment of a dental prosthetic arrangement according to the invention in a perspective side view,

2 shows the embodiment of FIG. 1 with identification of hidden parts,

3 shows a part of the dental prosthetic arrangement from FIG. 1, FIG.

4 shows a further embodiment of the invention in a sectional view,

Fig. 5 shows the embodiment of FIG. 1 in a partially broken Presentation,

6 shows a further embodiment of the invention in a sectional view,

7 shows a further embodiment of the invention in a sectional view,

Fig. 8 shows a further embodiment of the invention in a sectional view, and

9 shows a further embodiment of the invention in a sectional view. In the figures, identical or functionally identical components are provided with the same reference numerals.

1 shows a dental prosthetic arrangement ZA according to a first embodiment of the invention in a perspective side view. The tooth-prosthetic arrangement ZA has a main body GK, which is designed starting from a lower side US with an annular section RA. The annular portion RA is shown in the embodiment of FIG. 1 as a circumferential outer edge of the body, but may also be formed only in sections in other embodiments. The ring-shaped section RA is provided on its outer side with a driving profile MP, which can be used as a tool holder, for example a wrench. Depending on the desired type of fastening, carrier profiles MP of different shapes or designed in different numbers can be provided. io

Above the annular portion RA, an elastic coating UZ is formed, which in the example shown has a frustoconical shape in the lower region and is closed towards an opening OE by a retention element RE. In the example shown, the retention element RE is designed as a completely circumferential collar, although other configurations would also be possible here. The tooth-prosthetic arrangement ZA is connected to the underside US with an implant (not shown in FIG. 1), wherein the coating UZ can be used as a patrix for a crown or a prosthesis

From FIG. 2, the structure of the main body GK is shown in more detail again, with the elements hidden by the coating UZ being shown in dashed lines. It can be seen that the base body GK merges on an upper side OS, which adjoins the annular portion RA, into a region with mutually tapered side surfaces SF, which in the example shown are of frusto-conical form. The upper side OS is completely covered with the coating UZ, wherein the coating UZ is firmly connected to the main body GK. The compound of the coating UZ with the main body GK can be prepared for example by polymerization or by gluing.

In this case, the main body GK can also be provided with an air-bonding agent in the region of the upper side OS, so that the coating UZ adheres better to the base body GK. As shown in Fig. 2, the base body GK may be provided below the opening OE in the coating UZ with a further opening OE ', for example, for introducing an occlusal screw in the attachment the tooth-prosthetic arrangement ZA can be used on an implant.

In Fig. 3 that part of the dental prosthetic arrangement is shown, which is formed by the main body GK. In a preparation of a dental prosthetic arrangement, this would correspond to the state before the application of the coating UZ. The main body GK is typically made of metal, suitable materials being known to the person skilled in the art. The base body can also be made of zirconium dioxide or a hardened polymer. The coating UZ would be applied to the main body GK according to FIG. 3, for example by means of a suitable mold. The coating UZ is typically made of silicone, but other rubber or soft elastic materials are not excluded. FIG. 4 shows a further exemplary embodiment in which the dental prosthetic arrangement ZA forms an angled abutment together with a lower part UT. As can be seen from the sectional view according to FIG. 4, the main body GK seats with its underside US on the bottom part UT, wherein the connection between bottom part UT and main body GK is produced by means of corresponding internal thread IG and external thread AG. The internal thread IG is formed on the inside of the base body GK, while the external thread AG is arranged on a projecting portion of the bottom part UT. For fixing the basic body GK on the lower part UT, for example, the configuration of the driving profile MP described above can be used. The angled abutment thus formed can be fixed by means of a screw SR on an implant (not shown in Fig. 4), wherein for tightening the screw SR the above-described openings OE and OE ' allow insertion of a screwdriver. The coating ZU for example of silicone forms as the second part of the abutment a male, on which a crown or a prosthesis can be placed. The embodiment of the dental prosthetic arrangement ZA according to FIG. 4 is again shown in FIG. 5 in a partially broken representation. In this two-part representation, starting from a vertical parting line, both the outer shape and the inner shape are shown. Starting from the upper side OS, frustoconical side surfaces SF can be seen, on which the coating UZ is mounted. The main body GK is hollow in its interior, so that the projecting element of the lower part UT can engage with its external thread AG in the internal thread IG.

Referring to Fig. 6, another embodiment of the invention is shown. Here again, a lower part UT is provided which, at its in

Direction of an implant facing end is provided with a connecting element VE. By means of the connecting element VE, a rotationally secure fixing of the lower part UT in an implant can take place. The bottom part UT in turn has an external thread AG, wherein in Fig. 6, a state before connecting the external thread AG is shown with the internal thread IG in the main body GK. In contrast to the previously described embodiments, the base body at its lower edge on no carrier profile, this is rather at the upper end of the body on an inner surface as a driving profile MP formed. Accordingly, it is possible to fix the base body by means of a screwdriver, which is introduced into the driving profile MP, on the lower part UT that the underside US comes to rest on the lower part UT gap-free. The coating UZ with retention element RE in turn serves as a patrix for receiving a crown or a prosthesis. With reference to FIG. 7, an embodiment is shown in which a connecting element VE is arranged starting from the underside US of the dental prosthetic device ZA, so that the dental prosthetic device ZA can form a straight abutment. At the upper end of the basic body GK, in turn, a carrier profile MP is formed, wherein, as already described above, the coating UZ with retention element RE is used as a male for a crown or a prosthesis. The coating UZ is in turn above the top OS firmly connected to the body

Referring to Fig. 8, use is shown with a so-called miniature implant IM. Here, the main body GK is designed such that a fastening element BE arranged at the upper end of the implant IM is surrounded, wherein an occlusal screw (not shown in FIG. 8) can be introduced within the opening OE in order to place the main body GK on the implant IM to fix. Above the body GK turn the coating UZ is arranged with the retention element RE.

Instead of a two-part implant according to FIG. 8, it is also possible to use a one-piece implant which has a mounting post for receiving a

Crown or prosthesis as the main body GK, which is provided on its upper side OS with an elastic coating UZ, which is firmly connected to the upper side OS of the body GK by polymerization, bonding or connection with an NEN FLUFF.

The previous embodiments each show coatings UZ with a curvilinear retention element RE. It should be noted that in this case, however, other configurations are possible. Furthermore, it can be provided, the dental prosthetic arrangement ZA in the region of the coating UZ with a cap provided as a template of a denture or a crown. Due to the inventive design of a dental prosthetic arrangement with an elastic male part, which is used as an integral part of an abutment, a connection between crowns and prostheses as well as implants can be produced in many different ways.

In Fig. 9, another embodiment of the invention is shown. In this dental prosthetic arrangement, which is again shown in a sectional view in FIG. 9, the coating UZ is again applied to the main body GK. The coating UZ in the embodiment according to FIG. 9 can be made from a thermoplastic material which is applied to the base body GK Top of the body was applied, for example by means of Fleißverpressens. It is also possible to roughen the corresponding side of the basic body GK facing the coating UZ in order to achieve an improved fastening of the thermoplastic polymer to the basic body GK. PEK, for example, which can be used in the mouth of a patient without irritation because of its biocompatibility, can be used as the thermoplastic material. In addition, PEEK, like other high-performance polymers, has a high load-bearing capacity, so that high fracture stabilities can be achieved.

The tooth-prosthetic arrangement ZA shown in FIG. 9 has been produced in contrast to the embodiment according to FIG. 4 without retention element RE. The coating UZ is shaped such that its outer surface forms an outer cone AK, which can be introduced by means of cone inhibition into an inner cone of a dental prosthesis, not shown, so that the dental prosthesis can be fastened to the abutment. In addition, it is also conceivable to provide a circumferential groove or the like, for example in the area near the base body GK, so that an additional fastening can be achieved by means of an elastic ring. In contrast to the The embodiments described with rubber or soft-elastic masses described hereinbefore are not based on displacement by means of a coating UZ of thermoplastic material, as must be achieved in overcoming the retentive element RE according to FIG. 4. The thermoplastic see plastic material but still represents a certain deformability, with suitably selected geometries of the outer cone AK yet a secure attachment of the denture on the abutment is possible.

Furthermore, the embodiment shown in FIG. 9 in an angled abutment with lower part UT can, of course, also be combined for the other embodiments of the invention described in connection with FIGS. 1 to 3 and 5 to 8, that is also with one-piece implants , angled abutments or mini-implants. The features indicated above and in the claims, as well as the features which can be seen in the illustrations, can be implemented advantageously both individually and in various combinations. The invention is not limited to the exemplary embodiments described, but can be modified in many ways within the scope of expert knowledge.

List of reference numbers:

AG external thread

BE fastening element GK basic body

IF inner surface

IG internal thread

IM implant

MP carrier profile

OE opening

 OE 'further opening

OS top

RA annular section RE retention element

SF areas

 SR screw

US base

UT lower part

UZ coating

VE connection element

ZA dental prosthetic arrangement

Claims

Claims: A dental prosthetic assembly comprising an abutment comprising as a first part for determining its mechanical stability a base body (GK) which is connectable on its underside (US) with an implant (IM) and on its upper side (OS) as second part is provided with a deformable coating (UZ), which is firmly connected to the top (OS) of the body (GK). 2. Dental prosthetic assembly according to claim 1, wherein the base body (GK) is made of metal, polymer or zirconia. 3. Dental prosthetic assembly according to claim 1 or 2, wherein the  Cover (UZ) made of silicone, a soft elastic mass or a rubber-elastic mass or in which the coating (UZ) of a deformable mass, in particular a thermoplastic polymer, preferably PEEK is made. 4. Dental prosthetic arrangement according to claim 3, wherein the coating (UZ) polymerized, pressed, sprayed, glued or connected via a bonding agent. 5. Dental prosthetic arrangement according to claim 4, wherein the base body (GK) provided with a bonding agent or roughened on the side facing the coating (UZ) on its surface. 6. dental prosthetic arrangement according to one of claims 1 to 5, wherein the upper side (OS) of the main body (GK) with cylindrical, conical shaped or with oblique surfaces (SF) or mixed forms thereof. 7. Dental prosthetic arrangement according to one of claims 1 to 6, wherein the implant opposite to an opening (OE ') on the base body (GK) and an opening (OE) on the coating (UZ) is formed. 8. Dental prosthetic arrangement according to one of claims 1 to 7, wherein the coating (UZ) is provided with a retention element (RE). 9. Dental prosthetic arrangement according to one of claims 1 to 8, wherein the base body (GK) from the bottom (US) forth with a ringförmi- gene section (RA) is formed, the outer edge of which can be designed as Mitnahmepro- fil (MP) , 10. Dental prosthetic arrangement according to one of claims 1 to 9, wherein the base body (GK) is designed hollow-shaped along its longitudinal axis and on an inner surface (IF) with a driving profile (MP) is provided. 11. Dental prosthetic arrangement according to one of claims 1 to 10, wherein the base body (GK) on its underside (US) with an internal thread (IG) is provided with a preferably angled bottom (UT) with corresponding external thread (AG) can form an angled abutment. 12. Dental prosthetic arrangement according to one of claims 1 to 11, wherein on the underside (US) a connecting element (VE) for a straight of the abutment or which is designed for fastening in an implant (IM) with an occlusal screw. 13. Dental prosthetic arrangement according to one of claims 1 to 12, wherein the coating (UZ) is mounted in a prosthesis or crown. 14. Tooth prosthetic arrangement according to claim 13, wherein the coating (UZ) provided with a cap which can be inserted into the prosthesis or crown bar. 15. A method for producing a dental prosthetic arrangement with an abutment, which contains as a first part for determining its mechanical stability a basic body (GK), on its underside (US) with an attachment means for an implant (IM) and on its upper - Side (OS) is provided as a second part with an elastic coating (UZ), which is firmly connected to the top (OS) of the body (GK) by polymerization, gluing or bonding with a bonding agent. 16. A dental prosthetic assembly comprising a one-piece implant having a mounting post for receiving a crown or prosthesis as a base body (GK), which is provided on its upper side (OS) with an elastic coating (UZ) with the top (OS) of the Base body (GK) is firmly connected by polymerization, bonding or bonding with a bonding agent.