Introduction: Dental glass ceramics, Main ingredients are Lithium Disilicate, through special process. Because of its simple, rapid crystallization process and the effect of ultra high aesthetic repair, as the CAD high intensity of repair materials selection Advantages: * High aesthetic repair effect; * High chemical stability and binging strength; * Easy milling,prolong the service life of burs; * Simple and rapid crystallization process to reduce operating time; * Unique chameleon property guarantees excellent restorative effect. Range of applications: Indications:Include Inlay,Onlay,Veneer,Partial crown,Anterior crown,Posterior crown. Contraindications: Not indicated for bridge,post-and-core;not suitable for limited preparation space.