FIELD: chemistry.
SUBSTANCE: invention relates to lithium silicate glass ceramics and glass for use in dentistry. Lithium silicate glass ceramic contains a monovalent metal oxide selected from Rb2O, Cs2O and mixtures thereof, from 0 to less than 5.1 wt% Al2O3 and from 0 to less than 1.0 wt% K2O.
EFFECT: reduced temperature of crystallisation.
24 cl, 1 tbl
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