PROCEDURE FOR THE DIGITAL MANUFACTURE OF PARTIAL DENTURES.

IT202600034216T2Active Publication Date: 2026-08-19IVOCLAR VIVADENT AG
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Patent Information

Application Number
IT502026000034216
Authority / Receiving Office
IT · IT
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-03-09
Publication Date
2026-08-19
Estimated Expiration
2043-03-09

AI Technical Summary

Technical Problem

The conventional production of partial dentures is time-consuming and prone to errors due to the complexity of multiple materials and work steps, requiring several models and manual processes that can lead to transfer errors.

Method used

A digitally manufacturing system that includes a user interface for designing a prosthetic framework with coupling elements, a manufacturing device for automatic production of the framework, base, and teeth using additive and/or subtractive processes, and a positioning system with positive elements for precise assembly, allowing for model-free assembly and efficient production.

Benefits of technology

This approach simplifies the production of partial dentures by enabling immediate delivery of finished products, reducing errors, and allowing for precise, efficient assembly of components tailored to individual patient needs, thereby streamlining the manufacturing process.

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Abstract

The present invention relates to a manufacturing system (100) for producing partial dentures (101), comprising a user interface (103) for digitally designing a denture framework (105) with coupling elements (119) to the remaining tooth structure, a denture base (107) and denture teeth (109).
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Description

[0001] The present invention relates to a manufacturing system for the digital production of partial prostheses, a manufacturing method for the digital production of partial prostheses.

[0002] Partial dentures consist of several parts and different materials. The extent or size of the partial denture depends on the number of teeth present in the patient's mouth. Compared to complete edentulism, the dental situation can vary from individual to individual with regard to the number and extent of gaps. The production of partial dentures is time-consuming and prone to errors due to the multitude of materials and work steps involved.

[0003] Currently, several models are required for the conventional fabrication of partial dentures. The metal framework is created, modeled, and cast using an investment material model. The metal framework is then applied to the master model. The gingival portions are then wax-modeled and the teeth are set up in the articulator. The partial denture, for example, is then completed using a lost-wax technique, in which gum-colored plastic is injected instead of wax. Modeling the gingival and tooth portions in wax and transferring them is error-prone and time-consuming.

[0004] The final finishing takes place in the articulator, with an occlusion check, known as primary remounting. After removing the partial denture from the articulator, it undergoes final finishing and polishing. This procedure is also complex, and working with multiple models can lead to transfer errors.

[0005] The technical object of the invention is to simplify the production of partial prostheses.

[0006] This technical problem is solved by the subject matter according to the independent claims. Technically advantageous embodiments are the subject matter of the dependent claims, the description, and the drawings.

[0007] According to a first aspect, the technical problem is solved by a manufacturing system for the digital production of partial dentures, comprising a user interface for the digital design of a denture framework with coupling elements to the remaining tooth structure, a denture base, and denture teeth. The manufacturing system can be formed by software that combines all design elements for the components of the partial denture. The coupling elements are formed, for example, by double crowns (telescopes), attachments, anchors, clasps, magnets, and / or bars. The correct assembly of the individual elements reduces complexity.

[0008] In a technically advantageous embodiment of the manufacturing system, the manufacturing system comprises a manufacturing device for automatically manufacturing the denture framework, the denture base, and / or the denture teeth. This achieves the technical advantage, for example, that after a final polishing, the finished partial denture can be immediately delivered to the dentist for integration into a patient's dentition.

[0009] In a further technically advantageous embodiment of the manufacturing system, the manufacturing device is designed to produce the prosthetic framework, the prosthetic base and / or the prosthetic teeth by means of an additive and / or subtractive manufacturing process.

[0010] In a further technically advantageous embodiment of the manufacturing system, the manufacturing device comprises a first manufacturing unit for producing the prosthetic framework and a second manufacturing unit for producing the prosthetic base and / or the prosthetic teeth, or the manufacturing device is designed to produce the prosthetic framework, the prosthetic base, and / or the prosthetic teeth using a single manufacturing unit. The first manufacturing unit can use a first manufacturing method, and the second manufacturing unit can use a second manufacturing method. The first and second manufacturing methods can be different. This achieves, for example, the technical advantage that a particularly suitable manufacturing unit can be used depending on the component to be manufactured.

[0011] In a further technically advantageous embodiment of the manufacturing system, the manufacturing system comprises an export interface for exporting data of the designed prosthetic framework, the designed prosthetic base, and / or the designed prosthetic teeth. This provides the technical advantage, for example, that the data on the individual components can be further processed by other devices.

[0012] In a further technically advantageous embodiment of the manufacturing system, the manufacturing system is configured to digitally design a positioning system for the mutual positioning of the prosthetic framework, the prosthetic base, and / or the prosthetic teeth via the user interface. This can be done manually by the dental technician or automatically via the software. The intraoral patient situation for the digital design of the aforementioned components is provided to the software either via an intraoral scan or a scan of a dental model. The dental model is obtained from an impression of the patient; this is particularly useful for patients with severe edentulism. A model can be created from the data of the intraoral scan, on which the individual elements could be assembled.This provides the technical advantage, for example, that the components can be assembled easily and precisely.

[0013] In another technically advantageous embodiment of the manufacturing system, the positioning system comprises positive-locking positioning elements. This achieves the technical advantage, for example, of enabling play-free positioning of the components.

[0014] In another technically advantageous embodiment of the manufacturing system, the positive positioning elements can be locked against each other, inserted, or inserted into each other. This achieves the technical advantage, for example, that the components are automatically fixed in the correct position.

[0015] In a further technically advantageous embodiment of the manufacturing system, the positive positioning elements comprise projections and / or recesses. This provides the technical advantage, for example, of achieving particularly precise alignment of the components.

[0016] According to a second aspect, the technical problem is solved by a manufacturing method for producing partial dentures, comprising the steps of digitally designing a denture framework with coupling elements to the remaining tooth structure using a user interface; digitally designing a denture base using the user interface; and digitally designing denture teeth using the user interface. The manufacturing method achieves the same technical advantages as the manufacturing system according to the first aspect.

[0017] In an advantageous embodiment of the manufacturing process, the denture framework, the denture base, and / or the denture teeth are manufactured automatically by a manufacturing device. This also provides the technical advantage, for example, that the finished partial denture can be delivered immediately to the dentist for insertion.

[0018] In a further advantageous embodiment of the manufacturing method, the prosthetic framework is manufactured by a first manufacturing unit, and the prosthetic base and / or the prosthetic teeth are manufactured by a second manufacturing unit. This achieves the technical advantage, for example, that the individual parts of the design can be manufactured in different production orders depending on the materials used. Each part is coupled to the other part and adapted to it. In a further advantageous embodiment of the manufacturing method, data of the designed prosthetic framework, the designed prosthetic base, and / or the designed prosthetic teeth are exported via an export interface. This achieves the technical advantage, for example, that the data can be further processed by other devices.

[0019] In a further advantageous embodiment of the manufacturing method, a positioning system for the mutual positioning of the denture framework, the denture base, and / or the denture teeth is digitally designed via the user interface. This achieves, for example, the technical advantage that the components can be assembled correctly in a simple and quick manner.

[0020] According to a third aspect, the technical problem is solved by a positioning system for the mutual positioning of a prosthetic framework, a prosthetic base, and / or prosthetic teeth, comprising at least one spatial positioning element arranged on the prosthetic framework, the prosthetic base, and / or the prosthetic teeth. This achieves the technical advantage that the components can be assembled precisely and with the correct shape.

[0021] According to a fourth aspect, the technical problem is solved by a computer program with instructions which, when executed by a computer, cause the computer to carry out the method according to the second aspect. The computer program achieves the same technical advantages as the manufacturing system according to the first aspect.

[0022] In a technically advantageous embodiment, the computer program is designed to calculate a proposal for the spatial shape of the prosthetic framework with coupling elements to the remaining tooth structure, a prosthetic base, and / or prosthetic teeth. This achieves the technical advantage, for example, that the spatial design can be carried out more quickly.

[0023] Embodiments of the invention are illustrated in the drawings and are described in more detail below.

[0024] They show: Fig. 1 is a schematic representation of a manufacturing system for a partial denture; Fig. 2 is a schematic representation of a partial denture; Fig. 3 is an enlarged schematic representation of the partial denture with a representation of the joining geometry between the denture framework and the denture base; Fig. 4 is a further schematic representation of a partial denture with a representation of the joining geometry between the denture framework and the denture base; Fig. 5 is a further schematic representation of a partial denture with a representation of the joining geometry between a denture framework and a denture base and between a denture base and a tooth portion; Fig. 6 is a further schematic representation of a partial denture with a representation of the joining geometry between the denture framework and the denture base, in which the denture framework has been omitted in the saddle area; Fig. 7 is a further schematic representation of a partial denture with a representation of a positioning system; Fig.Fig. 8 shows a further schematic representation of further partial prostheses with a representation of another positioning system; and Fig. 9 shows a block diagram of the manufacturing method for digitally manufacturing partial prostheses.

[0025] Fig. 1 shows a schematic representation of a manufacturing system 100 for digitally manufacturing a dental partial prosthesis 101. The manufacturing system 100 is formed, for example, by a coordinated and adapted CAD / CAM system.

[0026] The manufacturing system 100 includes a user interface 103 for digitally designing a prosthetic framework with coupling elements, a prosthetic base, and prosthetic teeth as various components of the partial denture 101. The partial denture 101 can be constructed completely and with all components using the digital manufacturing system 100. This enables highly precise assembly of the components of the partial denture 101. The manufacturing system 100 allows the prosthetic teeth of the partial denture 101 to be individually tailored to the patient. This achieves better results than the use of prefabricated teeth, as better individuality, function, and aesthetics are achieved.

[0027] Once the components of the partial denture 101 have been digitally designed, they can be manufactured using a manufacturing device 111, either by building up or removing material. The manufacturing system 100 includes an export interface 121 for exporting data of the designed denture framework with the coupling elements (model casting framework), the designed denture base (gingival portion), and / or the designed denture teeth. This allows for automatic export for the respective components: denture framework with coupling elements, denture base, and denture teeth. Exporting combined components to a manufacturing device, such as a multi-material printer (inkjet printer), is also possible. However, the manufacturing device can also use a specially designed blank from which the respective component is milled, such as a two- or multi-color blank or a multi-material blank.

[0028] The manufacturing system offers the possibility of producing the various components of the partial prosthesis 101 using one or more manufacturing units 113-1 and 113-2. Different manufacturing processes can be used in the manufacturing units 113-1 and 113-2. In general, the components of the partial prosthesis 101 are manufactured monolithically from a single piece, subtractively or additively. A single manufacturing device can also be used to produce all components, such as three-dimensional multi-material printing (inkjet printing). This allows the partial prosthesis to be manufactured efficiently in a single work step. However, depending on the component to be manufactured, different manufacturing processes can be used to optimally utilize the material properties of different manufacturing materials.

[0029] The prosthetic framework 105 with coupling elements can be manufactured from metal using an additive or subtractive process by means of a first manufacturing unit 113-1. However, the prosthetic framework 105 can also be made from other materials, such as polyetheretherketone (PEEK) or other high-performance thermoplastic polymers. For the high-performance thermoplastic polymers, a separate or special print head with heating elements is used in inkjet printing to bring the material to operating temperature.

[0030] Polyetheretherketone is a high-temperature-resistant, thermoplastic, semi-crystalline resin with a melting point of 343 °C and a glass transition temperature of 143 °C. The physical, chemical, and biological properties of polyetheretherketone enable the fabrication of permanent dental prostheses for all indications. However, other materials are also generally conceivable.

[0031] The denture base and denture teeth can be manufactured using an additive or subtractive process by means of a second manufacturing unit 113-2. To increase efficiency, a denture base and denture teeth could be manufactured in a single manufacturing step, for example, subtractively or additively with at least two colors and two materials using 3D printing.

[0032] This can be achieved in a subtractive manufacturing process using a special two-color and / or multi-material blank (ceramic disk). An additive manufacturing process uses a three-dimensional multi-color / multi-material printing process. At least two materials and two colors are used for the three-dimensional printing process and selectively applied (inkjet process). A further increase in efficiency can be achieved by manufacturing all components in a single step.

[0033] After manufacturing several components for the partial prosthesis 101, they can be easily assembled to form the partial prosthesis. Thanks to the digital design, the precise assembly of the individual components of the partial prosthesis 101 can be done without a model. The manufactured components of the partial prosthesis are joined or glued together using a positioning system. The positioning system, for example, is constructed using plug-in connections and allows for precise, model-free assembly of the individual components.

[0034] Fig. 2 shows a schematic representation of a partial denture 101. The partial denture 101 comprises coupling or holding elements 119 with which the partial denture 101 is coupled to and supported by the remaining teeth. Furthermore, the partial denture 101 comprises connecting elements, a denture base 107, and denture teeth 109.

[0035] Fig. 3 shows an enlarged schematic representation of the partial denture 101. The manufacturing system 100 is also designed to digitally design a positioning system 115 for the mutual positioning of the denture framework 105, the denture base 107 and / or the denture teeth 109 via the user interface 103.

[0036] The positioning system 115 comprises positive-locking positioning elements 117 that can be locked against one another or clicked, inserted, or plugged into one another. In this case, the prosthetic framework 105 comprises projections 123 as positioning elements 117, which are inserted into corresponding recesses 125 of the prosthetic base 107. A joining medium 121 is located between the positioning element 117 and the prosthetic base 107. The joining medium 121, such as a cement or adhesive, creates the additional chemical bond between the components.

[0037] The positioning system 115 enables a snap-in or joining system between the denture framework 105, the denture base 107, and the denture tooth 109, allowing for model-free work. This optimizes the manufacturing process, for example, by eliminating the investment model.

[0038] Fig. 4 shows a further schematic representation of a partial denture 101. The partial denture 101 comprises a mandrel as a positioning element 117 for a denture base 107, which has been manufactured using a three-dimensional printing process. The denture base 107 and the denture tooth 109 can also be milled in one milling step from a two-color pre-designed blank.

[0039] The denture base 107 and the denture teeth 109 are manufactured, for example, using a three-dimensional multi-color / multi-material printing process in a water-soluble support structure. Two or more materials and two colors are used for the three-dimensional printing process. Specifically, three materials can be printed to produce the denture base 107. The denture framework can also be made of plastic and be tooth-colored. Thus, no opaque material is required, and there is a chemical bond between all components of the denture.

[0040] A multi-color / multi-material printing process can also be used to manufacture the entire partial prosthesis 101. In this case, two or more materials and / or two or more colors are used for the three-dimensional printing process and selectively applied (inkjet process). The materials can be dyed or further colored using color printing heads. In this case, all components can be manufactured in a single work step, and it is possible to combine several different materials.

[0041] The mandrel of the prosthetic framework 117 forms a positioning aid that is inserted into a corresponding recess in the prosthetic base 107. This mandrel is, for example, conical in shape. The design of the positioning aid depends on the requirements of the particular design of the partial prosthesis or the nature of its prosthetic base section with respect to the patient situation. This also creates a positioning system 115. A joining medium 121 is located between the positioning element 117 and the prosthetic base 107.

[0042] A composite-based cement, for example, is used as the bonding medium 121. The curing of the cement can be controlled, for example, through photopolymerization. To cover the metal components of the partial denture 101, the bonding medium exhibits high opacity. In this case, the use of an opaque can be omitted, thus increasing efficiency in the dental laboratory. The high opacity of the cement eliminates the need for an opaque firing.

[0043] Fig. 5 shows another schematic representation of a partial denture 101. The partial denture 101 is composed of three components. The denture teeth 109 are formed, for example, from milled individual teeth or groups of teeth. A positioning system 115 is arranged both between the denture teeth 109 and the denture base 107 and between the denture base 107 and the denture framework 105. The joining medium 121 is located between the respective components.

[0044] Fig. 6 shows a further schematic representation of a partial prosthesis 101, in which the prosthetic framework 105 is not located below the prosthetic saddle, but is arranged laterally. The prosthetic framework 105 comprises projections that engage in corresponding recesses in the prosthetic base, thus forming a spatial positioning system.

[0045] The lower pin, as a positioning aid, can also engage further into the prosthesis base 107. This ensures greater stability. The partial denture 101 also functions without a lower reinforcement. This design reduces material costs due to the smaller proportion of prosthetic framework material.

[0046] Fig. 7 shows a further schematic representation of a partial denture 101 with a representation of a positioning system 115. The positioning of the denture framework 105 takes place horizontally and / or vertically, laterally, below and / or within the denture base 107 and / or the denture teeth 109. With a model-free fixation of the coupling elements, different geometric shapes can be used, such as a push-button design or Lego brick principle, a plug-in strip or click strip (clickable), a bar-shaped or elongated arrangement.

[0047] In the illustrated case, the prosthetic framework 105 comprises a positioning system 115 with a bar as the positioning element 117. The bar has a stepped structure in cross-section. The bar has a central elevation that is stepped laterally. The prosthetic base 107 has a corresponding recess and is placed on the bar in a form-fitting manner.

[0048] Fig. 8 shows a further schematic representation of partial dentures 101 with a representation of another positioning system. Positioning can also be achieved using one or more mandrels 129 as positioning elements 117 of different lengths. The mandrel 129 is, for example, conical, round, or oval. A two-color blank or a manufacturing process using an inkjet process makes it possible to place the positioning elements 117 close to one another even in the area of ​​the tooth and denture material. Since there is no need to connect the tooth material to the denture material after separate production, a stable system is achieved. By combining tooth material and denture material, minimum wall thicknesses can be created together. This also opens up degrees of freedom for special patient situations. The positioning system 115 enables a highly precise connection by means of a positive and / or non-positive connection.especially when using the joining medium 121.

[0049] In addition, adhesive channels can be incorporated during the design process so that when the denture framework is inserted into the denture base and / or denture teeth, excess adhesive material can drain through the adhesive channels, allowing easy insertion of the denture framework. This would also prevent bubbles in the adhesive material.

[0050] In general, the partial denture 101 may comprise a positioning system 115 for mutually positioning a denture framework 105, a denture base 107 and / or denture teeth 109, which has at least one spatial positioning element 117 arranged on the denture framework 105, the denture base 107 and / or the denture teeth 109.

[0051] The positioning element 117 is, for example, a mandrel 129 or a bar 127 formed on the prosthetic framework 105. In addition to the mandrel 129 or bar 127, the prosthetic framework 105 can comprise a projection 131 onto which a recess in the prosthetic base 107 and / or the prosthetic teeth 109 is pushed, for example, when pushed onto the mandrel 129 or bar 127. The prosthetic base 107 and / or the prosthetic teeth 109 can have a recess for receiving the mandrel 129 or bar 127. This recess can extend along a row of teeth. The mandrel or bar can have an oval, rectangular, square, or stepped cross-section.

[0052] The positioning element 117 can be formed by a projection or a recess in the prosthetic framework 105, the prosthetic base 107, and / or the prosthetic teeth 109. The projection or recess can have a conical or cylindrical shape. The positioning elements 117 can each be arranged on different components of the partial denture 101, such as the prosthetic framework 105, the prosthetic base 107, and / or the prosthetic teeth 109. Two positioning elements 117 can interact in a form-fitting or force-fitting manner.

[0053] The positioning system 115 comprises, for example, a joining medium 121 for connecting the prosthetic framework 105, the prosthetic base 107, and / or the prosthetic teeth 109. The joining medium 121 is, for example, opaque, non-transparent, or impermeable to light. Furthermore, a method for the mutual positioning of a prosthetic framework 105, a prosthetic base 107, and / or prosthetic teeth 109 can comprise the step of positioning by means of at least one spatial positioning element 117 arranged on the prosthetic framework 105, the prosthetic base 107, and / or the prosthetic teeth 109.

[0054] Fig. 9 shows a block diagram of the manufacturing process with models or for the model-free production of partial dentures 101. After taking an impression of the remaining dentition and determining the jaw relationship, the partial denture is designed based on the digitally acquired data.

[0055] The manufacturing method for the partial denture 101 comprises step S101 of digitally designing the denture framework 105 using one of the user interfaces 103; step S102 of digitally designing the denture base 107 using the same user interface 103; and step S103 of digitally designing denture teeth 109 using the user interface 103. The user interface 103 comprises, for example, a display with an operating device, such as a mouse. A user can interact with the manufacturing system 100 via the user interface 103 in order to spatially and color-design the denture framework 105, the denture base 107, and / or the denture teeth 109 in a digital environment.

[0056] All components of the 101 partial denture can be designed in a single step. This eliminates the need to import or export different design elements and the use of different software with different interfaces.

[0057] For the analysis of gaps in the dentition and the correct arrangement of holding and coupling elements 119 or the spatial design of the partial denture 101 and / or the components, a computer program using an artificial intelligence algorithm can be used. The artificial intelligence algorithm can, for example, comprise an artificial neural network that has been trained using a large amount of training data. The training data here includes, for example, data about a spatial shape of the dental arch and the remaining teeth, each of which is assigned a spatial shape of the partial denture 101 and the components. If the artificial neural network is trained using this training data, it can then automatically calculate a spatial shape of the partial denture 101 and the components based on the spatial shape of the dental arch and the remaining teeth. This shape can be presented to the user as a suggestion.

[0058] In this way, user errors during planning can be reduced. In conjunction with the positioning system 115, the computer program can analyze the arrangement of the positioning elements 117 in conjunction with the infinite possibilities of framework designs and automatically calculate and suggest designs for the partial denture 101. The computer program can be executed on a computer with a processor and a digital memory for storing the computer program and other data.

[0059] The automated manufacturing process, with subsequent possible model-free combination of components, significantly simplifies the manufacturing process for partial prostheses 101. The automated design and manufacturing process for partial prostheses 101 is achieved through software that combines all design elements and functions for the components of the partial prosthesis 101. The software (computer program) can be executed on a suitable computer, which thereby forms the manufacturing system 100.

[0060] The manufacturing process enables an automated design and manufacturing process for partial prostheses. The components of the partial prosthesis 101 can be manufactured in one piece (monolithic), subtractively, and / or additively. This enables a highly precise, model-free assembly of the components of the partial prosthesis 101. In addition, a positioning system 115 is used for the individual components.

[0061] The individual components can be created by controlling different materials. Corresponding data sets for the respective components adapt to each other, eliminating the need to split or separate them. The digital design of a positioning system simplifies the assembly and joining of components.

[0062] All features explained and shown in connection with individual embodiments of the invention can be provided in different combinations in the subject matter according to the invention in order to simultaneously realize their advantageous effects.

[0063] All method steps can be implemented by devices suitable for performing the respective method step. All functions performed by physical features can be a method step of a method.

[0064] The scope of the present invention is given by the claims and is not limited by the features explained in the description or shown in the figures. LIST OF REFERENCE SYMBOLS

[0065] 100Manufacturing system 101Partial denture 103User interface 105Prosthetic framework 107Prosthetic base 109Prosthetic teeth 111Manufacturing device 113Manufacturing unit 115Positioning system 117Positioning element 119Coupling or holding elements 121Joining medium 123Protrusion 125Recess 127Bar 129Mandrel

Claims

1. Manufacturing system (100) for the digital production of partial dentures (101), comprising: - a user interface (103) for the digital design of a denture framework (105) with coupling elements (119) to the remaining tooth hard substance, a denture base (107) and denture teeth (109).

2. Manufacturing system (100) according to claim 1, wherein the manufacturing system (100) comprises a manufacturing device (111) for automatically manufacturing the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109).

3. Manufacturing system (100) according to claim 2, wherein the manufacturing device (111) is designed to produce the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109) by means of an additive and / or subtractive manufacturing process.

4. Manufacturing system (100) according to claim 3, wherein the manufacturing device (111) comprises a first manufacturing unit (113-1) for manufacturing the prosthetic framework (105) and a second manufacturing unit (113-2) for manufacturing the prosthetic base (107) and / or the prosthetic teeth (109) or the manufacturing device (111) is designed to manufacture the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109) by means of a single manufacturing unit.

5. Manufacturing system (100) according to one of the preceding claims, wherein the manufacturing system (100) comprises an export interface for exporting data of the designed prosthetic framework (105), the designed prosthetic base (107) and / or the designed prosthetic teeth (109).

6. Manufacturing system (100) according to one of the preceding claims, wherein the manufacturing system (100) is designed to digitally design a positioning system (115) for mutually positioning the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109) via the user interface (103).

7. Manufacturing system (100) according to claim 6, wherein the positioning system (115) comprises positive positioning elements (117).

8. Manufacturing system (100) according to claim 7, wherein the positive positioning elements (117) can be locked against one another, inserted or inserted into one another.

9. Manufacturing system (100) according to claim 8, wherein the positive positioning elements (117) comprise projections and / or recesses.

10. A manufacturing method for producing partial dentures (101), comprising the steps of: - digitally designing (S101) a denture framework (105) with coupling elements (119) to the remaining tooth hard substance by means of one of the user interfaces (103); - digitally designing (S102) a denture base (107) by means of the user interface (103); and - digitally designing (S103) denture teeth (109) by means of the user interface (103).

11. Manufacturing method according to claim 10, wherein the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109) are manufactured automatically by a manufacturing device (111).

12. Manufacturing method according to claim 11, wherein the prosthetic framework (105) is manufactured by a first manufacturing unit (113-1) and the prosthetic base (107) and / or the prosthetic teeth (109) are manufactured by a second manufacturing unit (113-2).

13. Manufacturing method according to one of claims 10 to 12, wherein data of the designed prosthetic framework (105), the designed prosthetic base (107) and / or the designed prosthetic teeth (109) are exported via an export interface.

14. Manufacturing method according to one of claims 10 to 13, wherein a positioning system (115) for mutually positioning the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109) is digitally designed via the user interface (103).

15. Positioning system (115) for the mutual positioning of a prosthetic framework (105), a prosthetic base (107) and / or prosthetic teeth (109), comprising: at least one spatial positioning element (117) arranged on the prosthetic framework (105), the prosthetic base (107) and / or the prosthetic teeth (109).

16. A computer program comprising instructions which, when the computer program is executed by a computer, cause the computer to carry out the method according to one of claims 10 to 14.

17. Computer program according to claim 16, wherein the computer program is designed to calculate a proposal for the spatial shape of the prosthetic framework (105) with coupling elements (119) to the remaining tooth hard substance, a prosthetic base (107) and / or prosthetic teeth (109).