Characterisation and Properties of Lithium Disilicate Glass Ceramics in the SiO₂-Li₂O-K₂O-Al₂O₃ System for Dental Applications

Figure 5

SEM micrographs of (a) LD1, (b) LD2, (c) LD3, and (d) LD4 after heat treatment at different temperatures for 2 hrs.

(a)

(b)

(c)

(d)