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HT Zirconia Blocks



Advantage of Zirconia Block
A. High aesthetic effect, good transparency, natural tooth color.
B. High strength, hardness and durable, do not need the support of metal.
Main Ingredients
Compositions Silide Zirconia Blank ISO 13356 Standard
ZrO2+HfO2 +Y2O3 99.5% ≥99.0%
Y2O3 4.8% 4.5% ~5.4%
Al2O3 <0.5% <0.5%
Other Oxide <0.3% <0.5%

Physical & Chemical Performance
Item HT ISO 6872 Standard
Appearance White
Density Pre-Sintering (g/cm3) 3.13 >2.8
Density Post-Sintering (g/cm3) 6.10 ≥6.0
Fracture Strength (Mpa) 1400
Flexural Strength (Mpa) 1470 ≥800
Vicker’s Hardness  (Mpa) 1200
Shrinkage Factor (%) 19~22
Young`s Modulus (Gpa) 210
Light Transmittance (%) 40
Chemical Solubility (ug/cm2) 2.5 100
Radioactivity (Bq.g) ≤0.001 ≤1.0

Biological Performance
Item Silide Zirconia Blank ISO 6872 Standard Compliance Standard
Cytotoxicity test Grade of cytotoxicity: 0 Cytotoxicity: 0 Yes
Short term systemic toxicity test-oral route No significant differences were found between tested group and control group. Indicated tested sample has no systemic toxicity No toxicity Yes
Sensitization test (Delayed-type hypersensitivity test The scales of reactions of 10 animals were “0”, less than “1”. Indicated  tested sample has no sensitization No sensitization Yes
Intracutaneous reactivity test Tested product by sodium chloride extraction is “0”, by cotton seed oil extraction is 0.17, no irritation No intracutaneous reactivity Yes
Ames Test Mutation negative Negative Yes
Amann Girrbach System
89*71*10 89*71*18
89*71*12 89*71*20
89*71*14 89*71*22
89*71*16 89*71*25

Classification HT ST Pre-shaded Multi Layer
Indication Anterior ×
Inlay × ×
HT: High Translucent, ST: Super Translucent
“√” means best choosing
“×” means not best choosing