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DentalJet – Direct Manufacturing of Dental Prosthetics from Zirconium Ceramics by Water Jet Milling

Funded Project

This research and development project is funded by the German Federal Ministry of Education and Research (BMBF) within the KMU-innovativ: Research for Manufacturing (funding number 02P21K570) and implemented by the Karlsruher Institut für Technologie (KIT). The author is responsible for the content of this publication

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Highlights

  • Water-jet milling
  • Zirconium ceramics for dental prostheses
  • Single step production.

Benefits

  • Significantly lower manufacturing effort
  • Higher production-time efficiency
  • Substitutes conventional process chain milling and sintering of ceramics
  • Higher quality with less effort
  • Easy to substitute.

Overview

Dentures made of high-strength and body-compatible zirconium ceramics are considered as the best-in-class solution for patients – however, the costs of such a synthetic tooth are very high. Up to now, such dental ceramics can only be produced at great expense and in many individual steps. For this purpose, a chalk-like starting material of the ceramic has to be processed under high wear by milling or grinding, then has to be solidified by firing and brought to its final state. With the waterjet, on the other hand, even solidified ceramics can be processed directly. Furthermore, short treatment times and an improvement in patient care with high-quality dental prostheses are also envisaged.

The aim of the KMU-innovativ project dentalJET is to develop a complete technological package consisting of waterjet milling machine, machining process and dental ceramics to enable direct machining of dental ceramics already in their final state. Moreover, it will be possible for the user to automatically create complex machine programs for the production of dental restorations

Highlights

  • Water-jet milling
  • Zirconium ceramics for dental prostheses
  • Single step production.

Benefits

  • Significantly lower manufacturing effort
  • Higher production-time efficiency
  • Substitutes conventional process chain milling and sintering of ceramics
  • Higher quality with less effort
  • Easy to substitute.

In addition to the development of a new type of machine system for the efficient machining of small dental workpieces, a concept for the process-reliable application of waterjet milling is being developed. Parallel to this, a computer program is being programmed, the task of which is to control the waterjet milling machine. Therefore, zircon ceramics optimized for

waterjet milling are being developed in this project to perfectly replace the natural tooth. With the new possibilities, the advantages of ceramics such as compatibility, longevity and beauty should be fully exploited. For the patient, this material allows the best possible treatment.

When the project is successfully implemented, it will be possible to produce dental restorations quickly and sustainably in the future. Waterjet milling can also be transferred to other areas where materials are difficult to process, such as ceramics. Typical fields of application for the new technology include aerospace, medical, micro and precision engineering.

Project Timeline

Project Start: October 2022

Project End: September 2024

Partners

The project is being conducted together with the two partners:

H.G. Ridder Automatisierung GmbH is providing the necessary hardware and system engineering capabilities to exploit the water-jet milling technology.

pritidenta

Pritidenta GmbH is a manufacturer of materials used for dental applications. In this project Pritidenta is responsible for post processing and evaluation of the water-jet milling in terms of material characteristics.

Contact

Dipl.-Ing. Thorsten Schreiner

AixPath GmbH Henricistraße 50 52072 Aachen

+49 241 9978 3349