FIELD: manufacturing technology.SUBSTANCE: group of inventions relates to lithium-silicate glass-ceramic, methods of its production and application. Disclosed is a method for manufacturing a lithium-silicate glass-ceramic comprising a pentavalent metal oxide, selected from Nb2O5, Ta2O5 and mixtures thereof, and from 11.0 to 21.0 wt % Li2O, and including from 0 to less than 2.0 wt % K2O, in which (a) the initial glass comprising glass-ceramic components is subjected to thermal treatment at a temperature of 480–500 °C for a period of 10 minutes to 120 minutes to form a glass with germs that are suitable for forming lithium disilicate crystals, and (b) glass with germs is subjected to heat treatment at a temperature of 650–750 °C for a period of 10 minutes to 120 minutes to form a glass-ceramic with lithium disilicate as the main crystalline phase. Also disclosed is a lithium-silicate glass-ceramic, obtained using said method, and the use of such glass ceramic as a dental material, in particular, for the restoration of teeth and for the manufacture of materials for restoration of teeth.EFFECT: implementation of said method enables to obtain glass-ceramics with lithium disilicate suitable for use in dentistry said lithium disilicate being the main crystalline phase, as a result of short thermal treatments at sufficiently low temperatures of nucleation and crystallisation processes.22 cl, 11 ex, 1 tblГруппа изобретений относится к литиево-силикатной стеклокерамике, способам ее изготовления и применения. Предлагается способ изготовления литиево-силикатной стеклокерамики, включающей в себя оксид пятивалентного металла, выбранный из Nb2O5, Ta2O5 и смесей таковых, и от 11,0 до 21,0 масс.% Li2O, и включающей в себя от 0 до менее 2,0 масс.% К2О, в котором (а) исходное стекло, включающее компоненты стеклокерамики, подвергают термической обработке при температуре в 480-500°C в течение периода времени в 10 мин - 120 мин для формирования стекла с зародышами, которые являются приго
