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For more than 30 years, PEEK has been used in human medicine as an
implant material (fi nger prostheses, intervertebral discs and hip
joint prostheses). The benefi ts lie in the highly biocompatible
material properties, which make fusion with the bone possible. What
is more, the mechanical material properties are very similar to
that of the bone skeleton.
As a rule, PEEK is used in medicinal products, in order to achieve
greater benefi ts: in order to make a product lighter, have a
higher level of design freedom and a higher level of functional
integration on the one hand, but also as a cheaper alternative to
precious metal or other materials, on the other hand. Its
performance characteristics include biocompatibility, chemical
stability, resistance to gamma and X-ray radiation and radiological
transparency (no production of artefacts).
PEEK (polyetheretherketone) is the most signifi cant representative
of polyaryletherketone (PAEK). This is a partially crystalline,
thermoplastic high temperature-resistant high-performance plastic
with a melting temperature of approx.
Its insolubility in water makes it a biocompatible material, which
is ideal for patients with allergies. High-performance polymers
have a great potential as framework material, both for fi xed and
removable dental prostheses. On the one hand, they are considerably
cheaper than gold and on the other hand, they are lighter and
easier to work with in dental laboratories compared to NPM,
titanium or ceramics. Moreover, demand for metal-free dental
prostheses is on the increase, with more and more cases of metal
334°C. PEEK is therefore suited for processing in extrusion and
injection moulding procedures, but can also be used to manufacture
tense rotating parts and milling parts. The material is highly
stable and can bear pressures of up to 3.6 GPa.