All Z5 implants are made from TZP- A Bio-HIP® zirconium oxide. The material reaches its flexural strength, which is higher by far than conventionally used titanium, through the "Hot Isostatic Post compaction" process, among other things. In this step, the material is densified by sintering in a tunnel oven for three days at 2000 bar, so that the physical properties of the base material can be significantly improved.
Not only implants, but all instruments that come into direct contact with the surgical field are made of zirconium oxide. The cutting instruments are made of high strength ATZ high-performance ceramic (alumina toughened zirconium oxide). This zirconium oxide which is strengthened by aluminum oxide is ideal for the production of drills and taps. These ATZ drills have excellent cutting performance and low wear. Scalpels and raspatories are manufactured from zirconium oxide using an injection molding process.
Due to years of use of this material for dental reconstruction and its use in orthopedic, zirconium oxide is known to be highly biocompatible . This has been shown in a large number of clinical studies.
zirconium oxide has comparable bone integration to commercially pure titanium. Sennerby et al. (Gothenburg, Sweden) have shown in an animal study that the removal torque of zirconium oxide implants with a rough surface is comparable after 6 weeks to the removal torque of titanium implants with a rough surface.
Gahlert et al. (Munich, Germany) showed in an animal study that zirconium oxide implants with a roughened surface have better stability than machined zirconium oxide implants. The roughening of the surface increases bone apposition and has a positive effect on removal torque.