Bredent Medical of Germany have designed an implant system which allows the use of either a titanium or a zirconium implant. The surgical instruments are the same in either case. Their zirconium based `White-Sky` implant is made from `brezirkon` and is of the one-piece implant and abutment design. The implants come in 3.5mm, 4mm and 4.5 mm diameters with lengths from 8-12mm.