With the industrial computer tomograph exaCT S from WENZEL , Neo Dens, a manufacturer of dental implants, is raising its quality assurance to the highest level. Every day, the Croatian company produces an average of around 20 individual single parts and 500 series parts using state-of-the-art manufacturing technologies.
Neo Dens products are used in dental implantology and dentistry. In addition to providing the desired esthetics, they also help end users replace the parts of the teeth or jawbone elements that have naturally degraded. Managing Director Marko Živko explains the high quality requirements for implant prosthetics: "The abutment, for example, serves as an abutment as well as a fastening element and provides stability for the dental prosthesis as a supporting pillar. Our products guarantee treatments of the highest quality. The permanent tooth preservation of our customers is our focus."
The parts vary in size and weight, e.g. implant screws can be 3.5 mm long and gingiva formers 12 mm long. The parts are usually very delicate and weigh only a few grams. The surface roughness values of the manufactured workpieces are in the order of 0.001-0.0001 mm. The tolerance of certain dimensions is about 0.01 mm and concerns any part that is a mating surface in relation to another part.
"Since our parts are very small and therefore often difficult to measure using conventional methods, as well as due to their geometric complexity, it was necessary to perform measurements that capture the entire dimension of the products, including inside the component," says Marko Živko. Medical parts must have special mechanical properties, as they are exposed to various forces and loads. Therefore, it is often necessary to be able to inspect the inside of the product to check for possible material deterioration that would not be visible without CT.
Previously, quality assurance used conventional methods such as calipers or micrometers, or commissioned measurements with computer tomographs from external providers. Now the products are fully scanned directly in the company after production using the exaCT S 130 computed tomograph from WENZEL . After the measurement, Neo Dens uses the exaCT Analysis software to inspect the inside of the part, then triangulates the volume and creates cross-sections that can be easily and quickly measured using the proven WM | Quartis measurement software.
"We chose a CT from WENZEL because of its ability to perform fast and reliable measurements." Marko Živko, Managing Director Neo Dens.
"We also appreciate the quality of the hardware and the user-friendly software interfaces. The short-term responses to requests sent by us and the qualified and uncomplicated cooperation with support technicians and engineers have completely convinced us."
Neo Dens d.o.o., based in Zagreb, Croatia, manufactures both single and serial parts used in dental implantology. Products include parts such as abutments (connecting element between a dental implant and a prosthetic restoration such as a dental crown), Ti base links, temporary cylinders, healing abutments, implant screws. Special products such as customized abutments, customized multi-unit all-on-X solutions, customized copings/bridges and/or crowns/bridges, customized partial frameworks are all manufactured using CNC milling machines and the SLM metal printing process.
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