MULTILAYERED OXIDE CERAMIC BODIES WITH ADAPTED SINTERING BEHAVIOUR

摘要

The invention relates to multilayered oxide ceramic bodies, and in particular to presintered multilayered oxide ceramic bodies and green oxide ceramic bodies which comprise at least two different layers and are suitable for dental applications, wherein at least one layer contains La₂0₃ and the at least two different layers differ in their La₂0₃ content. These bodies can be thermally densified without distortion by further sintering and are therefore particularly suitable for producing dental restorations. The invention also relates to a method for producing such multilayered oxide ceramic bodies and to a method for producing dental restorations by using the multilayered oxide ceramic bodies. The oxide ceramic is based on zirconia, preferably on stabilized tetragonal zirconia polycrystal.