Dental Glass Ceramic Lithium Dislicate Blocks for Sirona Cerec Emax CAD CAM Milling Size: B40 40mmx15mmx15mm Model： HT–High Transparency A1 A2 LT–Low Transparency A1 A2 A3 Ivolclar Vivadent Shade Guide is ok for reference Physical properties Density 2.3-2.6g/cm³ Density (after sintering) 2.4-2.7g/cm³ Biaxial bending strength ＞300Mpa Thermal expansion coefficient (10±0.5)×10-⁶K-¹ The transition temperature <500℃±20℃ Chemical solubility <100μg/cm³ Radioactivity ≤1.0Bq/g Chemical property SiO₂ 58.5%-72.5% Si2O 13%-15% K2O 3%-5% Other oxides 7.5%-25% 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 Features: 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. 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. FDA STATEMENT The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.If so, you can bid on this item only if you are an authorized purchaser.If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item