Is zirconia radioactive?
The zirconiumoxide used for medical applications is not radioactive. This material has been in use for the last twenty years in hip implants in more than 1.8 million patients. Several hundred thousand root posts, crowns, bridges and implant abutments have also being used. The material is under strict radioactivity monitoring. The maximum level is set at 250 mS/y (Milli-Sievert per year). The material produced by Metoxit has the lowest radiation levels compared to other manufacturers, and is constantly at 5.4 mS/y. This is only marginally more than human bone surface, with human bone surface naturally at 3.1 mS/y.
