Miserite crystallized glass for artificial tooth and method for coloring same

A miserite-based crystallized glass for an artificial tooth produced by a method comprising:

• (a) drying, weighing and ball-milling raw glass powders and coloring additive powders, wherein the raw glass powders includes SiO2, CaO, CaF2 and K2O;
• (b) introducing the ball-milled raw glass powders and coloring additive powders into a furnace, and calcining the powders therein at 950 to 1050° C. for 1 to 3 hours, and then cooling the powders to a room temperature;
• (c) melting the calcined powders to form a glass;
• (d) introducing the glass into a preheated mold at 450 to 550° C., preforming a thermal-stress removal heat-treatment of the glass at 450 to 550° C. for 1 to 3 hours, and cooling the glass to a room temperature;
• and
• (e) heat-treating the glass to crystalline the glass, and cooling the glass to a room temperature to form a crystallized glass,
• wherein the miserite-based crystallized glass is colored to have a shade of one of groups A, B, C, or D of a Vita shade guide as a tooth shade reference, and
• wherein the miserite-based crystallized glass has a miserite crystal phase as a main phase and has a hydroxyapatite crystal phase and a xonotlite crystal phase as additional phases.