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

摘要

The present invention relates to lithium silicate glass or lithium silicate ceramics glass seated on the top end of zirconia and a method for producing the same. More specifically, the present invention relates to lithium silicate glass or lithium silicate ceramics glass and a method for producing the same, wherein the lithium silicate glass or lithium silicate ceramics glass has excellent permeableness and toning properties and is seated on the top end of a zirconia substructure, framework, or coping having excellent mechanical strength. To this end, the lithium silicate glass or lithium silicate ceramics glass seated on the top end of a zirconia substructure of the present invention comprises: 10-15 wt% of Li_2O; 71.1-85.0 wt% of SiO_2; 2-5 wt% of P_2O_5 serving as a nucleating agent; 1-5 wt% of Al_2O_3 increasing a glass transition temperature and a softening point and improving chemical durability of glass; and 0.01-1.0 wt% of ZrO_2 reinforcing a binding force of the zirconia substructure.