The outstanding properties of ZLS (zirconia-reinforced lithium silicate) are a function of
its unique microstructure. The presence of 10% zirconia in the glass phase in atomically
dissolved form provides high strength and ensures safe and long-lasting restorations. The
zirconia is essentially responsible for the nucleation of crystal phase.
The result is a large number of very fine-grained lithium silicate crystals, whose high
glass content give the material its excellent light-optical and mechanical properties.
Translucency, opalescence, fluorescence and the chameleon effect all benefit, with high
edge stability and excellent polishability being an added plus. This ultra fine microstructure
allows Celtra to be processed quickly and efficiently in a dental laboratory in its crystalline
state and in the appropriate tooth shade.