1. A method of making a dental restorative material containing a glass material or glass ceramic based on lithium silicate, characterized in that: a) amorphous glass sostava50-70% by weight of SiO, 10-25% by weight of LiO, 8-20% by weight of stabilizer, selected from the group consisting of oxides of Zr, Hf, Ge, La, Y, Ce, Ti, Zn or mixtures thereof, 0-10% by weight of AlO, 0-10% by weight of KO and / or NaO, i0-20% dobavokobespechivayut by weight of a preform, b) said blank is converted into a dental restorative material by means of at least one pre process rofessional, wherein during said at least one conversion process occurs at least partial crystallization due to elevated temperatur.2. A method according to claim 1, wherein the amorphous glass has the following composition:. 55-64 wt% SiO, 15-22% by weight, preferably 17-20% by weight of LiO, 8-20% by weight, preferably 10- 15% by weight of stabilizer from the group consisting of ZrO, HfO, or mixtures thereof, 0-10% by weight, preferably 0.1-8% by weight, and more preferably 1-5% by weight of AlO, 0-10% by weight, preferably 0.1-5% by weight of KO and / or NaO, 0-8% by weight PO, i0-20 weight%, preferably 0.1-10% by weight dobavok.3. The method of claim. 1, characterized in that during the conversion process, the preform is subjected to heat, preferably at a temperature of at least 800 ° C, more preferably at a temperature of from 850 ° C to 1100 ° C, preferably for a period of from 10 120 minut.4. The method of claim. 1, characterized in that in a further step c), following the conversion process, the dental restorative material is subjected to heat treatment at a temperature of from 850 ° C to 1100 ° C.5. Cn
