Z-Systems has introduced a completely metal-free implant and set of surgical instruments for placement of these implants made from 95% Ziconium dioxide and 5% Yttrium tri-oxide. Zirconium is one of five metals shown to support osseointegration (the others are: Titanium, Niobium, Tantalum and Platinum). This new approach has been certified for use in Germany, but FDA clearance for use in the United States is planned. A few animal and human based studies suggest that the bone-to-implant contact percentages (a measure of the degree of osseointegration) are similar to those achieved with titanium-based implants.