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Dental

It doesn‘t matter whether you are producing crowns and bridges, plastic dental models or removable partial dentures, with EOS solutions you always get exceptional value for money. Laboratories and manufacturing services providers can thus work much more efficiently. The productivity of the EOS systems has a positive effect on the cost of parts and the quality of the final products is reliably high.

   
Dental Prostheses
Dental prostheses (steps in production from left to right: with support structures,surface ready for veneer, after ceramic veneer) on a dental model and removable partial denture (right)
Building Platform
Productive: A building platform can be charged with up to 450 units
Jaw Model
Design variety thanks to digital production: Complete jaw model in form of a solid piece to check for occlusions, saw-cut model with pinholes, model with removable stumps (left to right)
Additive Manufactured Removable Partial Denture
Stages of production for an additive manufactured removable partial denture: Dental prosthesis directly after manufacturing, with support structures removed and surface polished, after completion (left to right)
Laser
Additive Manufacturing: The laser fuses the metal powder layer by layer with 200 W and a temperature of 1400°C
Bridge
Polished bridge made from EOS CobaltChrome SP2
Partial Denture
Removable partial denture with support structures made from EOS CobaltChrome RPD
Dental Model
Dental model made from PA 2105 in the form of a solid complete jaw model to check for occlusions
Digital technologies have become established in several fields of dentistry and are already a firm part of the industry. Laser sintered dental prostheses have almost completely replaced precision casting in some countries. A further stage in the process has been digitized with the optical impressions, and more will follow. In future, more and more dental technicians will thus pick up a computer mouse instead of a wax knife and use an intraoral scanner instead of an impression tray - this saves time and makes work processes more efficient.

EOS systems are able to manufacture medical devices.
However, EOS cannot offer any guarantee that these devices meet all requirements.

Additive Manufacturing (AM) for Dental Prostheses and Models


Laser sintering is an Additive Manufacturing process to build up parts layer by layer and differs greatly from conventional manufacturing techniques. It uses 3D data on the oral situation of the patient as a basis; this is generated using intraoral scanners or by impression or model scans. The data set is processed directly with no loss of accuracy, such as is experienced with conventional impression methods, to produce the dental prosthesis or model and then 'sliced' into layers. The laser sintering system, which contains a bed of metal or plastic powder, generates the desired geometry layer-by-layer. A focused laser beam then fuses the powder material on the basis of the digital data provided. Once one layer has been completed, the powder bed is lowered by a few hundredths of a millimetre and the process begins again. The final product is characterised by a consistently high quality. It meets the needs of precision and aesthetics and satisfies budgetary/ financial requirements.

Open Process

The EOS process chain offers great flexibility since it has open system interfaces. The users can select the module of their choice and exchange data with this. The EOS systems work with STL data (STL = Surface Tessellation Language, a standard file format for 3D data) so that the dental technician can use a wide variety of computer-assisted design programs (e.g. from 3Shape, Dental Wings, Exocad). Thanks to the independent system structure, the digital CAD/CAM process in design and data processing can be adapted to the economic, indication-specific and dental technology requirements of practices or laboratories so as to achieve and optimum production process.

Crowns and Bridges


Direct Metal Laser Sintering (DMLS) has been available to produce crowns and bridges since 2005. With over 60 installed systems worldwide, it is the most widespread solution on the market. Around 6.8 million units are currently being produced with these machines every year. Proof enough that the hardware and process have established themselves in dental technology. The CE-certified material EOS CobaltChrome SP2 (CE 0537) and the EOSINT M 270 system are used for the digital production of crowns and bridges. Both elements of the process chain come from EOS and satisfy the high quality standards for medical products. The finished products comply with the relevant standards EN 1641 as well as EN ISO 22674.

Fast and economical production of top-quality dental prostheses

The EOS systems work with an accuracy of +/– 20 μm and can produce around 450 units at low cost within 24 hours. This corresponds to an average construction time of around 3 min per unit. The digitally produced dental prosthesis is of a constantly high quality. Following the construction process, the dental prosthesis only has to be separated from the platform and finished. The composite strength of the ceramic veneer is outstanding compared to other manufacturing techniques. Hardly any personnel are needed to operate the DMLS system. This means that two production cycles can be run per day depending on the daily number of units and capacity utilisation and up to 80,000 units can be produced each year. People are only needed to set up and unload the system. The Additive Manufacturing (AM) of dental prostheses is an industrial production process and, thanks to the high productivity of the system, the production costs fall whilst the quality of the final products remains consistently high.

Dental Models


The EOS system FORMIGA P 110 and the material PA 2105 are used to produce dental models. 40 to 70 complete jaw models can be manufactured within 14 hours (excl. cooling time) depending on the design and size. The high production capacity is a result of the multiple layer design. Not only are the individual parts connected by support elements, they are only fixed by the surrounding, non-fused powder. On account of the support-free method of production, no manual finishing is necessary, apart from a brief blasting. The dental model is ideally produced parallel to the corresponding crown or bridge. Through the time efficient production method the manufacturing time can be reduced on average by one working day and the dispatch times for conventional impressions can be eliminated fully from the manufacturing chain.

Removable Partial Dentures


If several teeth are missing in a set of teeth, a removable dental prosthesis is the cheapest solution for the patient. For the dental laboratory, on the other hand, the conventional manufacture of model cast prostheses means a lot of work. The preparation of the cast model and the wax modeling based on this often takes more than one hour and the complete casting procedure including finishing is laborious and time-consuming. The digital production method, on the other hand, saves a lot of time: the design for the removable partial denture is ready in around 15 minutes with only a few mouse clicks. Thanks to the flexibility of design of Direct Metal Laser Sintering (DMLS), the modeling software is not restricted by the manufacturing technique. High strength, rigid and at the same time filigree geometries can be produced. Casting errors can be ruled out.

Precise and at the same time economical technology

The EOS system is very accurate and therefore makes laboratory work easier. The removable partial denture that is produced has an accuracy of +/– 20 μm and is of a consistently high quality. But the method is at the same time economical too. Around 48 units can be produced within 24 hours. This corresponds to an average construction time of around 30 minutes per unit.

Certified process chain with a specially developed material

Removable partial dentures are made with the EOSINT M 270, which is already established on the market. The fine powder particles of the material produce a finegrain structure compared to that of the casting and the material characteristics are matched to the application. The removable partial dentures produced with the aid of computers have a higher strength than a conventional model cast and the risk of a clamp breakage is lower. The high level of detail supports the reproduction of pitted structures. Both the material and system come from EOS and satisfy the high quality standards that apply for medical products. The finished products comply with the relevant standards EN 1641 as well as EN ISO 22674.

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Dental process chain

Dental process chain
From data generation to digital manufacturing.

Dental process chain

Dental process chain
From data generation to digital manufacturing.

Dental process chain

Dental process chain
From data generation to digital manufacturing.

Dental process chain

Dental process chain
From data generation to digital manufacturing.

Customer Case Study

Economic production of patient specific restorations made of a high-performance alloy.

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