DE102024114117A1 - Dental attachment for working on a dental implant - Google Patents

Abstract

The invention relates to a dental attachment (22) for processing dental implants (3), wherein the dental attachment (22) comprises: - a receiving shaft, in particular an RA shaft, (24) extending along an attachment axis (B) for receiving in a dental contra-angle handpiece (20), and - a sleeve-shaped functional part (26) supported by the receiving shaft (24), which is open at its front end (32), wherein the functional part (26) has a closed wall region (28) with an inner surface (29) and a functional surface (36) for processing a dental implant (3) is formed at a front end region (34) of the inner surface (29).

Description

The invention relates to a dental attachment for processing a dental implant.

Dental implants are used to anchor crowns or other dental structures in a patient's jawbone. For this purpose, a dental implant generally has an outer surface with an external thread and an interior to receive a crown or dental structure. The interior is generally designed as an internal thread into which the crown/dental structure can subsequently be screwed, for example, using a fitting. To achieve this, a connecting adapter, particularly an abutment, can first be screwed onto the implant, and then the crown/dental structure attached to it. The dental implant, with its external thread, is generally inserted into the jawbone using a self-tapping mechanism, similar to a dowel, so that the crown/dental structure can then be placed on top.

To insert a dental implant, the dentist or oral surgeon generally first folds back a layer of gum tissue to allow access for the implant. The gum tissue can then be repositioned against the implant and crown. This seals the implant from below, in the direction of insertion.

The external thread of the implant is generally designed with a specific surface roughness to facilitate subsequent bone ingrowth. This ensures a secure hold and firm position, preventing the formation of gaps between the external thread and the jawbone that could lead to the accumulation of bacteria or blood.

However, dental implants often lead to an inflammation of the gums around the dental implant and the crown or dental structure, known as mucovicitis, because bacteria and food debris accumulate in the areas between the surface and the gums.

Due to the inflammation, the gums lose their sealing function, the bacteria migrate along the implant deeper into the bone, eventually reaching the jawbone and inflaming it as well. The inflamed bone recedes and deteriorates in a bowl- or funnel-shaped pattern. The gums follow the bone loss. This process is called peri-implantitis. Studies show that as early as the first two years after implant placement, 20% of all implants are affected by peri-implantitis; in Germany, for example, this would amount to approximately 200,000 implants during this period.

This can loosen the dental implant, causing it to fall out. The roughness of the external thread is now a disadvantage, as it increases the surface area, facilitating the accumulation and adhesion of bacteria. While a dentist or oral surgeon can smooth the external thread of the implant, which now lies outside the bone and is covered with a stubborn biofilm, using a drill bit, this procedure is generally difficult due to limited access and the risk of injury to the patient, adjacent teeth, and neighboring implants.

The invention is therefore based on the objective of creating a dental attachment for processing dental implants that enables safe and easy processing of dental implants.

This problem is solved by a dental attachment according to claim 1. The dependent claims describe preferred embodiments. Furthermore, a set of dental attachments and a method for machining dental implants are provided.

According to the invention, a dental attachment is thus created that has a receiving shaft for insertion into a standard dental instrument, the so-called contra-angle handpiece. Such receiving shafts are known in particular as RA shafts (right angle shafts, contra-angle handpiece shafts) and are standardized in such a way that they can be quickly attached and exchanged in the usual manner and enable safe operation. This already achieves the advantage that a tool is created that can be used with standard dental instruments, thus simplifying handling for the user, i.e., the dentist or oral surgeon, and allowing the specific handling of the dental attachment to be learned quickly.

Adjoining the receiving shaft in the insertion direction, i.e., towards the front, is a sleeve-shaped functional part with a closed wall section. This closed wall section is closed, particularly in the circumferential direction, and especially has a round cross-section. The sleeve-shaped functional part can, for example, have an upper disc section, e.g., a round disc, and the closed wall section adjoining it towards the front. Here, the functional part is... Especially the wall area, preferably rotationally symmetrical, which makes a rotary drive easy.

The closed wall section has an opening at its front end, which is preferably round and surrounded by the front end of the closed wall section. The user can guide the closed wall section with this opening over the dental implant, so that an upper portion of the dental implant is received within the closed wall section or the interior of the functional part. The round opening is therefore preferably designed with a larger diameter than the dental implant being processed. The opening can be chosen to be large enough to allow the closed wall section to be guided over even a thickened upper portion of the dental implant.

By enclosing an interior space for the dental implant with a closed wall, the risk of slippage and damage to the oral cavity, such as the gums and jawbone, is reduced. This is because the closed wall secures the dental attachment's vertical position on the implant. This allows for safe and precise treatment, which is particularly advantageous compared to external treatment of a dental implant using, for example, a ball-head drill. Such instruments, when applied externally to the implant, can slip when guided circumferentially around it.

The implant is processed by a functional surface located on the front portion of the inner surface of the closed wall section. This prevents or minimizes damage to areas other than the external thread of the dental implant being processed. Specifically, it prevents damage to the external gum tissue or jawbone. The user guides the sleeve-shaped functional part over the dental implant in the insertion direction, ensuring that the inner surface only contacts the relevant areas of the implant's outer surface.

The user can thus guide the inner surface against the area of the external thread to be worked. To achieve this, the practitioner advantageously tilts the dental attachment slightly so that the axial direction no longer coincides with the longitudinal axis of the dental implant, and the functional surface approaches the relevant area of the external thread from the outside at an angle. While the functional surface in the lower part of the dental attachment works on the external thread of the implant, the user can, for example, be guided in the upper part – not the working area – on the opposite side of the implant.

A particular advantage lies in the fact that the user can process the external thread circumferentially by swiveling or rocking the dental attachment. During this rocking motion, the ring-shaped functional surface can be guided around the external thread with a simple handling movement. The user thus swivels the dental attachment, or performs a movement in which the axial direction of the dental attachment describes, for example, a conical surface or cone-shaped surface with respect to the longitudinal axis of the dental implant, resulting in a reliable cutting/grinding process circumferentially. The user can therefore grind the external thread circumferentially using the rocking motion and determine the desired height of the processing by adjusting the vertical position.

The functional surface is specifically designed to be abrasive and/or for material removal from the dental implant, particularly for one or more of the following processing steps: grinding, cutting, milling, polishing. The functional surface may be coated with a material approved for use in dental tools, such as diamond coating or carbide cutting edges, so that materials known per se, whose effects and material removal properties are familiar to the user, can be used in its manufacture.

Advantageously, the functional surface is only formed in the front end region of the inner surface of the closed wall section, i.e., preferably not above the end region and not on the outer surface, and preferably also not at the end face of the functional part or the wall section. Thus, areas above the functional surface, the outer surface of the wall section without a functional surface, and the end face are smooth. This also distinguishes the dental attachment from, for example, bone punches or similar devices. Bone punches, for instance, are used to obtain a core sample, so the cutting surface is only located on the end face.

This allows the machining point to be positioned very precisely. A momentary handling error will at most result in the external thread not being in the exact intended position. is hit by the functional surface, but this does not cause any further damage.

The sleeve-shaped functional part, both in the closed wall area and the upper disc area, can have through-holes for the introduction of water or saline solution to ensure reliable cooling. The closed sleeve design, preferably open only at the bottom, largely prevents water from splashing sideways and into the mouth. The water can then drain primarily forward or towards the gums.

According to a preferred design, a scale is provided on the outer surface of the closed wall area, i.e., an arrangement of markings at different height positions. This allows the practitioner to see at what height the functional surface is currently operating. Furthermore, a marking can indicate the position of the functional surface itself. This simplifies and improves handling.

The closed wall section can be cylindrical, i.e., with a constant cross-section in the longitudinal direction. However, the wall section can also be curved, particularly convexly bulging outwards. This allows for a different pivoting behavior during machining, as the implant's upper portion is positioned further away from the wall section. In the case of a convexly bulging wall section, the functional surface can be located at the front end of the wall section.

According to the invention, a set of several dental attachments can also be provided, which complement each other functionally. For example, dental attachments of different axial lengths and diameters can be provided to allow for the treatment of various implants. Furthermore, the functional surfaces can be provided with different grit sizes or different grinding/cutting properties to quickly remove material or, for example, to subsequently polish the outer surface. The user can thus successively pick up different dental attachments, as is possible, for example, during a dental procedure.

The shaft of the dental attachment, which includes a holder for a dental contra-angle handpiece, can also be provided in different lengths, depending on the available space in the mouth.

• 1 die Darstellung eines Zahn-Implantates mit Krone bei Einsatz in einem Kiefer;
• 2 eine Seitenansicht eines Dental-Einsatzes gemäß einer ersten Ausführungsform;
• 3 einen Axialschnitt durch den Dental-Einsatz der 2;
• 4 eine Aufsicht auf den Dental-Einsatz der 2, 3;
• 5 eine Seitenansicht eines Dental-Einsatzes gemäß einer zweiten Ausführungsform;
• 6 einen Axialschnitt durch den Dental-Einsatz der 5;
• 7 eine Aufsicht auf den Dental-Einsatz der 5, 6;
• 8 die Bearbeitung eines Zahn-Implantates mit einem Einsatz gemäß einer Ausführungsform; und
• 9 die Bearbeitung eines Zahn-Implantates mit einem Einsatz gemäß einer weiteren Ausführungsform.

The invention is explained in more detail below with reference to the accompanying drawings, which illustrate several embodiments. The drawings show:

• 1 The illustration of a dental implant with a crown when used in a jaw;
• 2 a side view of a dental insert according to a first embodiment;
• 3 an axial section through the dental insert of the 2 ;
• 4 supervision of the dental use of the 2 , 3 ;
• 5 a side view of a dental insert according to a second embodiment;
• 6 an axial section through the dental insert of the 5 ;
• 7 supervision of the dental use of the 5 , 6 ;
• 8 the processing of a dental implant with an insert according to one embodiment; and
• 9 the processing of a dental implant with an insert according to a further embodiment.

1 Figure 1 shows a dental implant setup 1 in which a dental implant 3, e.g., made of a metal, generally a titanium alloy or a ceramic composition, is inserted into a jawbone 2. The dental implant 3 extends downwards in the insertion direction with its longitudinal axis A and with an external thread 4.

To insert the dental implant 3, a hole is generally pre-drilled in the jawbone 2, and then the dental implant 3, with its external thread 4, is screwed into the jawbone 2 using a self-tapping mechanism, so that the dental implant 3 is received in a form-fitting and friction-fit manner. The dental implant 3 may have a threadless shaft section 5 at its upper end, i.e., the rear end 3a in the insertion direction, and may be flush with the upper surface 2a of the jawbone 2 during insertion.

The surface 4a of the external thread 4 is designed with a surface roughness specific to, for example, the implant manufacturer, which enables the jawbone 2 to grow onto the external thread 4, thereby accelerating and improving the absorption and stabilization of the dental implant 3.

The dental implant 3 also has an internal bore 8 with an internal thread 9, the bore 8 being located away from the upper page 3a, i.e., at the lower end of the dental implant 3, extends downwards along the longitudinal axis A, but does not continue continuously to the lower end 3b of the dental implant, so that the bore 8 is a blind bore. The crown 10 is screwed into the internal thread 9 either directly or with the aid of an intermediate segment, a so-called abutment 13. As in 1 For example, a screw 12 can be inserted from above through a bore in the abutment 13 and the crown 12 can be placed on the abutment 13, e.g. with cement or as a screw connection.

The crown 10 thus protrudes upwards and serves as the patient's dental prosthesis. In a healthy patient, a layer of gingiva 6 is formed on the upper surface 2a of the jawbone 2, which rests against the crown 10 all around and thus forms a sealing effect similar to a Simmerring, preventing the penetration of fluid and bacteria downwards towards the external thread.

In such cases of dental implant formation 1, inflammation of the gums 6 around the dental implant 3 often occurs later, a condition known as mucoiditis. This inflammation can spread along the crown of the dental implant 6, causing inflammation of the jawbone 2 around the dental implant 3, a condition known as peri-implantitis. This can lead to bone loss in the jaw, with the following consequences: 1 Line 2b represents the surface of the resorbed jawbone 2. A depression 16 thus forms in the jawbone 2, through which the upper tooth-implant area 18 of the tooth implant 3 is exposed, and an upper part of the external thread 4 is accordingly no longer covered by the jawbone 2.

The resorption or resorption of the jawbone 2 around the dental implant 3 can occur in a bowl-shaped or funnel-shaped pattern, or as a combination of both. The gum tissue 6 and the periosteum of the jawbone 2 also follow this resorption.

Thus, due to bone loss, parts of the external thread 4 with the rough surface 4a protrude into the oral cavity. The rough surface 4a is quickly colonized by a harmful biofilm, which migrates further into the depths of the dental implant 3. The gum tissue 6, which becomes increasingly inflamed due to the biofilm, attempts to seal the threads of the external thread 4 and the rough surface 4a, but this is generally no longer successful. Consequently, peri-implantitis progresses, which can lead to the loss of the dental implant 3 and, in some cases, also to the loss of adjacent structures.

If bone loss 2 and peri-implantitis are observed, the dentist or oral surgeon can first surgically open the gum tissue 6 around the dental implant 3 and then grind down the upper portion 18 of the dental implant 3, including the exposed part of the external thread 4, to remove the threads of the external thread 4 and smooth the rough surface 4a. A dentist typically uses a dental instrument, usually with a contra-angle handpiece 20, into which the dentist can insert a drill bit, such as a ball bur, to manually smooth the upper portion 18 of the dental implant 3, thus providing a new seal for the gum tissue and removing the biofilm.

According to the invention, a dental attachment 22, 122 is provided, which is in particular made of metal and is inserted into the dental contra-angle handpiece 20 of the dental drill. 2 to 4 and 5 to 7 show corresponding embodiments. According to 2 to 4 The dental attachment 22 has a shaft 24 with a shaft end 25, which is designed for insertion into the standardized RA receptacle of a 2 The indicated contra-angle handpiece 20 is suitable. The shaft 24 thus preferably represents an RA shaft according to general technical standards, for positive-locking engagement with the contra-angle handpiece 20. Furthermore, the dental attachment 22 has a sleeve-shaped functional part 26 at its front end, which can connect directly to the RA shaft 24. According to the first embodiment, the sleeve-shaped functional part 26 can be 2 to 4 be cylindrical, with, for example, a circular upper disk area 27, to which, in the direction of the mounting axis B, i.e., in the insertion direction or in 2 downwards, a closed wall section 28 adjoins the sleeve-shaped functional part 26, which surrounds an interior space 40 and forms an opening 32 at the front end 30 of the closed wall section 28. The dental attachment 22 is thus open at the front.

On the inner surface 29 of the closed wall area 28, an abrasive functional surface 36 for grinding, cutting, and/or polishing is formed in a front end area 34. The functional surface 36 can, for example, be formed with a diamond coating or carbide cutting edges, as is common with dental drill bits for grinding and/or polishing teeth or crowns. Thus, the functional surface 36 can, in particular, represent a grinding, cutting, or polishing internal coating. The area The inner surface 29 above the end region 34 and on an outer surface 41 of the closed wall region 28 or the sleeve-shaped functional part 26 is in particular not formed with the functional surface 36; thus, the functional surface 36 is in particular only formed in the front end region 34 of the inner surface 29.

Preferably, through-holes 38 are formed in the closed wall area 28, e.g., circular and in a regular arrangement, e.g., as shown in circumferential rings, so that air and liquid can enter the interior 40 of the sleeve-shaped functional part 26 from the outside, and correspondingly also exit to the outside. This allows cooling water/saline solution, in particular during operation, to enter the interior 40 from the outside. Advantageously, through-holes 40 can also be formed in the upper disc area 27, e.g., as shown in the top view of the 4 in a ring-shaped arrangement, with one or more rings.

5 to 7 shows a dental attachment 122 as a further embodiment, which is basically the embodiment of the 2 to 4 corresponds and is provided with the same or similar reference numerals, wherein the dental attachment 122 is formed as a non-cylindrical, sleeve-shaped functional part 126, e.g., with a convex closed wall region 128, i.e., in particular, bulging outwards. Thus, the interior space 140 widens initially from above and then narrows again around the front end 30.

In the embodiment of the 5 to 7 The functional surface 36 is preferably formed in the area up to the front surface or the lower edge area of the closed wall area 128, so that the functional surface 36 can also be easily positioned and used by the user here.

In principle, the sleeve-shaped functional part 28, 128 can also be non-planar at its rear end, i.e., without a planar disk area 27. 8 and 9 Formations with a step-shaped transition from the shaft 24 to the sleeve-shaped functional part 26, 126 are indicated.

8 and 9 The figures indicate the use of dental attachments 22 and 122 in the subsequent processing procedure. During treatment, the crown 10 is unscrewed from the dental implant 3 to allow access to the implant 3 from the top. The dental attachment 22, 122 serves to remove and smooth the upper area 18 of the dental implant 3, and thus in particular a portion of the external thread 4. The user, i.e., in particular a dentist or oral surgeon, guides the dental attachment 22 from above, i.e., downwards in the direction of the attachment axis B and the direction of use, over the dental implant 3, so that the dental implant is received in the interior space 40, 140. The interior space 40, 140 has a larger diameter than the diameter of the dental implant 3. Thus, for example, the crown 10 is removed from the dental implant 3. B. the inner diameter of the wall area 28 is in the range of 9 mm and the outer diameter of the dental implant 3 is in the range of 8 mm, so that a sufficient distance between the dental implant 3 and the inner surface 29 is formed and subsequently the in 8 and 9 The handling and swiveling movement of the dental attachments 22 and 122 shown is possible. The dental attachment 122 of the embodiment of the 5 to 7 Due to the convex wall design, the interior diameter increases upwards by 140 mm, which facilitates handling and makes removal possible even with conical implants.

The user guides the dental attachment 22, 122 from above over the dental implant 3 and then moves it in a wobbling motion, adjusting the attachment axis B, for example, on a conical surface around the dental axis A of the dental implant 3. This allows the functional surface 36, 136 to remove, cut, grind, and/or polish or smooth the external thread 4. During processing, the upper disc area 27 preferably does not come into contact with the top surface of the dental implant 3, so that the user can perform an undisturbed wobbling motion. However, it is also possible to place the upper area of the dental attachment against the implant and allow it to be guided. Since the upper area does not have a functional surface, material removal is preferably not possible here. Thus, the axial length of the sleeve-shaped functional part 26, 126 is large enough to be able to remove the external thread 4 even in deeper areas of the dental implant 3, i.e. in larger depressions 16.

• - unterschiedlichen axialen Längen der hülsenförmigen Funktionsteile 26, 126, und/oder
• - unterschiedlichen Ausbildungen der Funktionsflächen 40, 140, d.h. insbesondere auch unterschiedlicher Körnung, und/oder
• - unterschiedlichen Formgebungen, d. h. zylindrisch, fassförmig bzw. ausbauchend.
• - unterschiedlichen Schaftlängen 24

According to a preferred training, a set of various dental attachments 22, 122 is provided, with

• - different axial lengths of the sleeve-shaped functional parts 26, 126, and/or
• - different designs of the functional surfaces 40, 140, i.e., in particular also different grain sizes, and/or
• - different shapes, i.e. cylindrical, barrel-shaped or bulging.
• - different shaft lengths 24

Thus, functional surfaces 36, 136 can have different cutting surfaces/different Grain grit is used to first remove or grind/cut the external thread 4, and subsequently to polish or surface finish.

Advantageously, a scale 44 is provided on the outer surface of the wall area 28, 128, extending in the direction of the attachment axis B and enabling the user to estimate the depth or the relative height position of the dental attachment 22 to the dental implant 3. This allows the user, for example, to see through the openings 38, 138 or to determine the insertion depth in comparison to the jawbone, since the lower part of the dental implant 3, where blood can accumulate, for example, is often difficult to see.

The scaling of 44 can be done using numbers and/or markings. Furthermore, as in 2 and 5 As can be seen, a marking 45, 145 is advantageously provided on the outer surface of the sleeve-shaped functional part 26, 126 to indicate the vertical position of the inner functional surface 40, 140.

The processing of the dental implant 3 by the dental attachment 22 is in 8 The adjustment of the dental attachment 22 is shown by two superimposed positions. The wobbling motion of the dental attachment 22 allows the external thread 4 to be selectively machined at the relevant points, i.e., ground, cut, and/or polished, without damaging other areas. In this way, one machining point 100 can be worked on at a time, ensuring that areas of the dental implant 3 above and below the machining point 100 are not machined or damaged. By guiding the dental attachment 22 in a wobbling motion or with its longitudinal axis B on a bowling track (?), the user can perform machining at this height all around, allowing the user to execute a wobbling motion with additional height adjustment corresponding to the height of the exposed implant area 18.

In the embodiment of the 9 , which are used to represent the 8 The bulging or convex shape of the wall area 128 helps to ensure that areas above the processing point 100 are not affected. Therefore, in the embodiment of the 9 Machining with less wobbling movement can be achieved, or conical implants can be machined better.

• Entfernen der Krone/dentalen Struktur 10 von dem Zahn-Implantat 3, gegebenenfalls Entfernen, z. B. Abklappen, des Zahnfleisches 6 von den zu behandelnden Bereichen,
• Aufsetzen des Dental-Aufsatzes 22, 122 von oben über das Zahn-Implantat 3 und Positionieren ohne Kontakt,
• Antreiben des Winkelstückes 20 und somit Rotieren des Dental-Aufsatzes 22, 122 um die Aufsatz-Achse B;
• Schwenken der Längsachse B des Dental-Aufsatzes 22, 122 relativ zur Längsachse A des Zahn-Implantates 3 unter Kontakt der aktiven Funktionsfläche 36, 136 des Dental-Aufsatzes 22, 122 an dem Außengewinde 4 des Zahn-Implantates 3 in einer Bearbeitungsstelle 100, schwenkende und/oder taumelnde und/oder kreisförmige Bewegung des Dental-Aufsatzes 22 unter Bearbeitung des Außenbereichs des Zahn-Implantates 3, insbesondere des Außengewindes 4,

wobei der Benutzer gegebenenfalls den Dental-Aufsatz 22, 122 für verschiedene Bearbeitungen wechseln kann.The inventive method for processing a dental implant 3 thus includes the following steps:

• Removal of the crown/dental structure 10 from the dental implant 3, if necessary removal, e.g. by flapping, of the gum tissue 6 from the areas to be treated,
• Place the dental attachment 22, 122 from above over the dental implant 3 and position it without contact,
• Driving the contra-angle piece 20 and thus rotating the dental attachment 22, 122 around the attachment axis B;
• Pivoting the longitudinal axis B of the dental attachment 22, 122 relative to the longitudinal axis A of the dental implant 3 with contact of the active functional surface 36, 136 of the dental attachment 22, 122 on the external thread 4 of the dental implant 3 in a machining point 100, pivoting and/or wobbling and/or circular movement of the dental attachment 22 while machining the outer surface of the dental implant 3, in particular the external thread 4,

the user may, if necessary, change the dental attachment 22, 122 for different processing operations.

After processing the dental implant 3, the initially folded-back gum 6 can be folded back into place and sewn shut, and - if necessary after a waiting period - the crown 10, or another dental structure, can be screwed back in.

• Schaftlänge d24 des Schaftes 24 im Bereich von d24 = 6 mm - 20mm Durchmesser des Schaftes 24 (normiert) 2,3 mm
• Zylinder-Innendurchmesser b26, b126 des Funktionsteils 26 z.B. 3 mm - 10 mm
• Länge d26, d126 des Funktionsteils 26, 126 z.B. im Bereich 8 mm - 20 mm
• Höhe d36 der Arbeitsfläche 36 z.B. im Bereich 2 mm bis 8 mm

The dimensions of dental implant 22, 122 are:

• Shank length d24 of the shank 24 in the range of d24 = 6 mm - 20 mm; diameter of the shank 24 (standardized) 2.3 mm
• Cylinder inner diameter b26, b126 of the functional part 26 e.g. 3 mm - 10 mm
• Length d26, d126 of the functional part 26, 126 e.g. in the range 8 mm - 20 mm
• Height d36 of the work surface 36 e.g. in the range 2 mm to 8 mm

Reference symbol list

1

Dental implant training

2

jawbone

2a

Upper surface of the jawbone 2

2b

Surface of the resorbed jawbone 2

3

Dental implant

3a

Top/back end of the dental implant 3

3b

Underside/front end of the dental implant 3

4

external thread

4a

Surface roughness

5

shaft area

6

gum layer

8

Drilling

9

internal thread

10

crown

12

screw

13

Abutment

16

in-depth

18

upper dental implant area

20

dental handpiece

22, 122

Dental attachment

24

shaft

25

shaft end

26, 126

sleeve-shaped functional part

27

upper disc area

28, 128

closed wall area

29

Interior surface area of the closed wall area 28

30

front end of the sleeve-shaped functional part 26

32

opening

34

front end area

36

Functional surface, grinding surface

38, 138

Through holes

40, 140

Interior of the sleeve-shaped functional part 26

44

Scaling

45, 145

mark

100

Processing point

A

Longitudinal axis, dental axis

B

Axial direction

Claims (13)

Dental attachment (22, 122) for processing dental implants (3), wherein the dental attachment (22, 122) comprises: - a receiving shaft (24) extending along an attachment axis (B) for receiving in a dental contra-angle handpiece (20), and - a sleeve-shaped functional part (26, 126) supported by the receiving shaft (24), which is open at its front end (32, 132), whereby the functional part (26, 126) has a closed wall region (28, 128) which has an inner surface (29, 129) and surrounds an interior space (40, 140), whereby a functional surface (36, 136) for processing a dental implant (3) is formed at a front end region (34) of the inner surface (29, 129). Dental attachment (22) according to one of the preceding claims, characterized in that the sleeve-shaped functional part (26, 126) and/or the closed wall area are rotationally symmetrical about the attachment axis (B). Dental attachment (22) according to Claim 1 , characterized in that the functional surface (36) is designed to be abrasive and/or for material removal from the dental implant (3), in particular for one or more of the following processing steps: grinding, cutting, milling, polishing. Dental attachment (22) according to Claim 3 , characterized in that the functional surface (36) is formed with a coating made of a material approved for use in dental tools, e.g. diamond coating or carbide cutting edge. Dental attachment (22, 122) according to one of the preceding claims, characterized in that - areas of the inner surface (29, 129) above the end area (34) and/or - an outer surface (41, 141) of the closed wall area (28, 128) or of the sleeve-shaped functional part (26, 126) and/or - an annular front end (30) of the sleeve-shaped functional part (26, 126) is smooth and/or without serration and/or without the functional surface (36, 136). Dental attachment (22, 122) according to one of the preceding claims, characterized in that through holes (38, 138) for the passage of liquid, in particular for the introduction of water and/or saline solution, are formed in the sleeve-shaped functional part (26, 126), in particular in the closed wall area (28, 128) and/or a disc area (27) above the wall area (28, 128). Dental attachment (22, 122) according to Claim 6 , characterized in that the through holes (38, 138) are arranged in a ring shape in several rows at are provided for the closed wall area (38, 138). Dental attachment (22) according to one of the preceding claims, characterized in that the closed wall area (28) is cylindrical. Dental attachment (122) according to one of the Claims 1 until 7 , characterized in that the closed wall area (128) is convexly bulging outwards, and the front end (30) of the closed wall area (128) has a smaller diameter than a central area of the closed wall area (128), wherein the functional surface (136) is preferably formed on an end face inner surface of the convexly curved wall area (138). Dental attachment (22, 122) according to one of the preceding claims, characterized in that on an outer surface (41, 141) of the closed wall area (28, 128) is formed - a scale (44) extending in the direction of the attachment axis (B) for marking a height position, and/or - a marking (45, 145) for indicating the position of the functional surface (36, 136). Dental attachment (22, 122) according to one of the preceding claims, characterized in that the dimensions of the dental implant (22, 122) have one or all of the following value ranges: - shaft length (d24) of the shaft (24) in the range of 6 mm to 20 mm, - diameter of the shaft (24); 2.3 mm, in particular standardized, - cylinder inner diameter (d26) of the functional part (26) in the range of 3 mm to 10 mm, - length (L26) of the functional part (26) in the range of 8 mm to 20 mm, - height (L34) of the working surface (34) in the range of 2 mm to 8 mm. A set of multiple dental attachments (22, 122) according to one of the preceding claims, wherein the multiple dental attachments (22, 122) differ in one or more of the following properties: - diameter of the wall region (28, 128), - shape of the wall region (28, 128), in particular cylindrical or convex, - longitudinal extent of the wall region (28, 128), - of the functional surface (36, 136), in particular grain size and/or material of the functional surface (36, 136), - length of the shank. Method for processing dental implants (3), comprising the following steps: providing and attaching a dental attachment (22, 122) according to one of the Claims 1 until 11 on a dental contra-angle handpiece (20), guiding the closed wall section (28, 128) over an upper section of the dental implant (3) so that the dental implant (3) is received in the interior (40, 140) of the closed wall section (28, 128), driving the dental attachment (22, 122) in the direction of rotation, inclined and/or wobbling and/or pivoting and/or circular guidance of the dental attachment (22, 122) to place the functional surface (36) at each processing point (100) on the outer surface of the dental implant (3).