The effect of spark plasma sintering on lithium disilicate glass-ceramics

Lithium disilicate glass-ceramics are now well established for the construction of dental appliances using heat extrusion and computer-aided design/computer-aided machining (CAD–CAM). Depending on the manufacturing process these materials are produced as ingots (IPS e.max Press, IPS Empress 2, Ivoclar-Vivadent, Schaan, Liechtenstein) or blocks (IPS e.max CAD, Ivoclar-Vivadent). A colored pressure cast block used for CAD/CAM applications is produced in a partially crystallized state with a 40% lithium metasilicate phase (Li2SiO3), to allow ease of machining and reduced tooling costs.

Source: Dental Materials - July 23, 2015 Category: Materials Science Authors: Fatima Al Mansour, Natalia Karpukhina, Salvatore Grasso, Rory M. Wilson, Mike J. Reece, Michael J. Cattell Source Type: research