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Ceramic Tools – Biocompatible and Guaranteed Metal-Free
This can be used to make cutting tools for the resection of bone material. Implants like hip joint sockets are made today from biocompatible and highly compatible materials like highly cross-linked polyethylene. So that they fit precisely and function reliably and durably, these sockets are individually adjusted. The medical products are often machined with carbide tools. The resulting metal abrasion can sometimes remain in the implant and find its way into the human body. This dilemma can be easily avoided – with machining tools made from a biocompatible high-performance ceramics like those developed by OxiMaTec. The material is based on an alumina matrix, embedded zirconium dioxide particles effecting higher mechanical strength and fracture toughness. During sintering, hexagonal lanthanum-aluminium-oxide platelets are produced, which additionally increases toughness. Praseodymium oxide as bonding agent increases the strength of the material. The resulting high-performance ceramic is not only biocompatible, but also bioinert, i.e. chemical or biological interaction between the ceramic material and the body tissue are excluded. Cutting tools made of these biocompatible ceramics are suitable not only to adjust the geometry of implants made of biocompatible plastics, but also for use in orthopaedic interventions, e.g. as a scalpel and saws in the resection of bone material. For boring in bones, special triangular drill bits have been developed that do not cut out the material, but just displace and compact it. They are suitable for use in dental applications to fix tooth implants in the jaw bone – safely and completely metal-free.
