Bloomden’s zirconia discs are designed for use in dental laboratories and milling centers for the production of crowns, copings, bridges and custom abutments. Discs with increased as well as ultra-high transparency are available. Ultra-high transparency discs have a light conductivity of 42-49%. Zirconium discs are made of fine powder, which ensures the highest quality zircon with flexural strength up to 800-1200MPA.
High level of transparency: 42-49%
Maximum strength level: 800-1200 MPa
Application: For single and bridge structures, including anatomical ones
Characteristics:
Density before sintering: 3.15±0.05 g/cm3
Density after sintering: 6.07±0.02 g/cm3
Coefficient of thermal expansion (25-500°C)(K1): 10.5±0.5
Flexural strength after sintering: >>800 MPa
Monoclinic phase content at artificial accelerated aging: <<15%
Light transmission: <<49%
Solubility after sintering:< <100 μg.cm2
Cytotoxicity: level 0
Radioactivity: <<0.1 Bq.gr-1
Sintering temperature (°C): 1450-1510
ZrO2+ HfO2+ Y2O3: ≥99%
Y2O3: 4,5%-10%
Al2O3: <0,15%
Other oxides: <<0.05%
