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Grade 5 titanium alloy receives CL certification for laser melting in dental applications

Concept Laser GmbH : 16 August, 2013  (New Product)
Rematitan CL is a titanium alloy now available as an implantable material for use with Concept Laser's generative laser melting process. It supplements the available spectrum of cobalt-chromium alloys.
Grade 5 titanium alloy receives CL certification for laser melting in dental applications

Dentaurum, Ispringen, manufacturer of the powder and Concept Laser, Lichtenfels, manufacturer of LaserCusing systems, have successfully completed the certification process. The Grade 5 titanium alloy has been used in dental prosthetics and implantology for many years. The products produced using this process comply with the requirements pursuant to the German Medical Products Act and the relevant standards DIN EN ISO 9693 and DIN EN ISO 22674. Certificates to this effect are provided to users along with the rematitan CL alloy.

Dental technology is currently undergoing radical change. Digital process networking is linking dentists, laboratories and dental manufacturing more closely than ever. The entire process chain, from impression-making to prosthetic restoration, is undergoing a dynamic transition — a trend away from casting and toward digital, additive manufacturing.

Dentaurum, located in Ispringen, manufactures the pulverised alloy for use in the laser melting process. As explained by Dr. Jürgen Lindigkeit, Head of Development for Prosthetics and Metallurgy at Dentaurum, additional dental restoration applications are now possible. “The mechanical properties of Rematitan CL are comparable to cobalt-chromium alloys; however its elastic modulus is half that of cobalt-chromium. Because of its material properties, Rematitan CL requires that the framework design be specific to precious metals.”

According to Dr. Jürgen Lindigkeit, the very fine-grained microstructure of the laser-molten parts of this titanium alloy allows greater firmness than conventional castings. The generative structure also allows for secure durable veneers: the innovative Ceramotion Ti veneer from Dentaurum. Surface defects associated with casting, such as shrink holes, are no longer a problem with the laser melting process. Moreover, the technique opens up new possibilities for dental technicians and dentists in terms of accuracy, geometrical freedom and finer braces. Both users and patients benefit from the time advantages of the process. Prosthetic restorations are essentially ready “overnight.”

The LaserCusing process makes it possible to economically produce crown copings, bridges and cast parts, as well as primary and secondary structures from the pulverised titanium alloy Rematitan CL. In addition to mechanical equipment, the alloy powder used is essential for a high-quality prosthetic framework. The composition, powder form, grain size and grain size distribution determine the quality and precision of the parts produced. Manufacturers such as Dentaurum have gained extensive experience and expertise in powder-based production technology over many years of working in the orthodontics sector.

The Grade 5 titanium alloy is intended for restorations requiring a combination of high rigidity and firmness thin, removable partial prosthetics or parts with thin cross-sections or braces.


The LaserCusing process is used to create mechanically and thermally stable metallic components with high precision. Depending on the application, it can be used with stainless and tool steels, aluminum and titanium alloys, nickel-based superalloys, cobalt-chromium alloys or precious metals such as gold or silver alloys.

With LaserCusing, finely pulverised metal is fused using a high-energy fibre laser. After cooling, the material solidifies. Component contour is achieved by directing the laser beam with a mirror deflection unit (scanner). Construction takes place layer by layer (with each layer measuring 20-100 microns) by lowering the bottom surface of the construction space, then applying and fusing more powder. Economic consumption of materials is one advantage of the process, since it works according to additive principles. Only the amount of powder required for production is fused. 

The special feature of the systems from Concept Laser is stochastic activation of the slice segments (also called "islands), which are processed successively. The patented process significantly reduces tension in the production of very large parts.

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