Glass-ceramics or Lithium silicate glass for Zirconia overlaying materials and preparation method thereof

摘要

The present invention relates to a lithium silicate glass or lithium silicate crystallized glass deposited on top of zirconia and a method for producing the same. More particularly, the present invention relates to a zirconia substructure, framework or coping top And a lithium silicate crystallized glass excellent in light transmittance and coloring property to be adhered to a glass substrate and a method for producing the same. For this purpose, the lithium silicate crystallized glass or lithium silicate glass deposited on top of the zirconia substructure of the present invention comprises 10 to 15% by weight of Li ₂ O, 71.1 to 85.0% by weight of SiO ₂ , P ₂ O ₅ 2- 1 to 5% by weight of Al ₂ O ₃ and 0.01 to 1.0% by weight of ZrO ₂ for increasing the glass transition temperature and softening point, improving the chemical durability of the glass, and improving the bonding strength of the zirconia substructure, .