5-year warranty on Zirconia

In the last edition of Australasian Dental Practice, an author implied that 3M ESPE's Lava system was the only system to offer a 5-year warranty on its CAD/CAM Zirconia copings.

However, all of the CAD/CAM systems on offer in Australia offer a 5-year replacement warranty on their Zirconia products. Kavo offer a 5-year warranty on Everest Zirconia copings and bridges (soon to be 6 years); Dentsply offer a 5-year warranty on Cercon Zirconia copings and bridges; Glacier Technologies offer a 5-year warranty on their Bio-Infinitum Zirconia copings and bridges; and Nobel Biocare offer a 5-year warranty on all Procera copings and bridges.