Fully integrated dental solutions from EOS permit the manufacture of final dental products and a process with high reproducibility and constantly high quality.
It doesn't matter whether you are producing crowns and bridges or removable partial dentures, with EOS Additive Manufacturing solutions you always get exceptional value for money. Laboratories and manufacturing services providers can thus work much more efficiently.
Sample Application from the Dental Industry on a EOS M 100 Building Platform
Additive Manufacturing: The laser fuses the metal powder layer by layer with 200 W and a temperature of 1400°C
Polished dental bridge made from EOS CobaltChrome SP2
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)
Productive: A building platform can be charged with up to 450 units
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)
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)
Removable partial denture with support structures made from EOS CobaltChrome RPD
Dental model made from PA 2105 in the form of a solid complete jaw model to check for occlusions
The successful realisations of reproducible industrial quality standards at great value for money are the result of EOS`s integrated quality management system, which ensures the quality of EOS products, processes and service.
- Fully certified processes and products e.g. EOS Cobalt Chrome SP2, certified as a class II medical material for dental applications (Directive 93/42/EEC)
- EOS Research and Development Center: Development and manufacture of materials and processes for applications in dentistry (ISO 13485: 2003)
- Advice and support during the validation process (EOS service products)
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 & models
Additive manufacturing is a 3D printing process that builds 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 EOS 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 characterized by a consistently high quality. It meets the needs of precision and aesthetics and satisfies budgetary/financial requirements.
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 etc.). 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 & bridges
Additive Manufacturing 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 very accurately and can produce around 450 units at low cost within 24 hours. 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 EOS 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 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.
Removable partial dentures
Compared to conventional production methods the digital production method 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 Additive Mnuafcturing, the modeling software is not restricted by the manufacturing technique. High strength, rigid and at the same time filigree geometries can be produced and casting errors can be ruled out.
Precise and at the same time economical technology
The EOS system works very very accurately and therefore makes laboratory work easier. The removable partial denture that is produced 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.
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 end products comply with the relevant standards EN 1641 as well as EN ISO 22674.