[Investigations into ways of improving the ultimate strength of ceramic dental materials (author's transl)]

Despite major improvements, ceramic dental materials, as albite glasses, still show unsatisfactory strength properties. It has been found that the combination of Keradens type dentinal compounds with aluminum-oxide-containing core materials, because of internal stresses, results in a higher ultimate strength than is suggested by the strength values of the single components. In addition, it has been found that wetting the surface of the ceramic test specimen results in a significant decrease in ultimate strength.