Medium opaque zirconium oxide discs for use when high mechanical strength, low wall thicknesses and very high aesthetics are required. Suitable for the production of monolithic and veneered crowns and bridges for the anterior and posterior regions. Due to a stability of between 850 and 1,200MPa and high fracture toughness, the wall thicknesses of all-ceramic restorations can be reduced to a minimum, meaning more natural tooth structure can be preserved during preparation.