The trifecta of speed, strength, and esthetics in the dental laboratory
CEREC Tessera blocks achieve exceptional three-way performance through a unique chemistry that incorporates two complementary crystal structures within a glassy zirconia matrix. These two crystals work together to create an unprecedented fusion of strength and beauty in one block while significantly improving overall processing time.
Rod-shaped crystals provide strength in the same manner as rebar embedded in cement. These crystals increase the density of the material while helping protect against crack propagation.
Used in glass ceramics, these crystals are unique to CEREC Tessera material. They are activated through the matrix firing process and add strength while contributing to the outstanding esthetics that give the convincing appearance of natural teeth.
The ultra-fine microstructure makes all the difference
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, 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.