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Metal-free implantology with zirconia devices is a relatively new technology. Nevertheless, more and more patients demand this kind of implant in place of the ones made out titanium due to the better aesthetics, lower risk of perimplantitis, concerns about metallic ions release. This paper analyze concisely the present situation of zirconia dental implants, and overviews the developments in progress on devices made out alumina/zirconia composites that will likely replace zirconia in the next future. Besides ceramics, Polyetheretherketone (PEEK) is now proposed for metal-free dentistry, the ceramic-loaded formulation of this high-performance polymer are especially interesting for dental implantology.
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Piconi et al. (2017) studied this question.