GC Initial LiSi Press is the first lithium disilicate ceramic ingot with High Density Micronization (HDM), a technology unique to GC that provides exceptional physical properties and the most natural, life-like aesthetics. Suitable for all types of restorations through all levels of transparency, HDM technology helps ensure the product remains extremely stable, without distortion or drop in value, even after multiple firings. Advantages of GC Initial LiSi Press include High fluidity, Long working time, Stable setting time, More flexible time to furnace, Time savings – great for lab work flow, Wider spruing capacity, Better internal adaptation, Easy removal of reaction layer and No hydrofluoric acid necessary.