Новости - zirkonzahn. NEW AND POLYCHROMATIC! Right on time for the tenth anniversary of our Prettau ® zirconia we are launching the new Prettau ® 2 Dispersive ® and Prettau ® 4 Anterior ® Dispersive ®, two pre-coloured, high quality zirconia materials with a natural colour transition.Soon the Prettau ® 2 zirconia will follow with its special combination of translucency and ...