Phosphosilicate glass ceramic comprises: many fluoroapatite crystals； many leucite crystals； and components comprising: silicon dioxide (57.6-62 wt.%)； aluminum oxide (12-16 wt.%)； boron oxide (0.0-1.5 wt.%)； potassium oxide (9-13 wt.%)； sodium oxide (5-8 wt.%)； lithium oxide (0.0-1.5 wt.%)； barium oxide (0-0.5 wt.%)； calcium oxide (0.6-2.4 wt.%)； zinc oxide (0-3 wt.%)； titanium dioxide (0-1.5 wt.%)； zirconium oxide (0-3.5 wt.%)； cerium oxide (0-1 wt.%)； phosphorus pentoxide (0.4-2.5 wt.%)； and fluorine (0.3-1.5 wt.%). Independent claims are included for: (1) a preparation of the phosphosilicate glass ceramic comprising: melting a glass comprising the components at a temperature of 1500-1550[deg] C, pouring the glass melt obtained into water to form a glass granulate, optionally comminuting the glass granulate to a glass powder with an average particle size of less than 90 mu m, preferably 10-40 mu m, and subjecting the glass granulate or the glass powder to a heat treatment in a temperature of 500-1000[deg] C, for a period of 30 minutes to 6 hours to form the glass ceramic； (2) a dental material shaped from the phosphosilicate glass ceramic； and (3) a dental product shaped from the phosphosilicate glass ceramic.
