Blending materials for dentures and dental prostheses, in particular metal and ceramic and all-ceramic blending materials; metals, precious metals and their alloys and ceramic compounds for dental and dental technology purposes; * preformed * blanks of ceramics, in particular of oxide ceramics, zircon oxides or aluminum oxides for the manufacture of prosthetic dental reconstructions; preformed blanks of metallic materials or composite materials for the manufacture of prosthetic dental reconst...