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ST-M MultiLayer Zirconia Block

Advantage of Zirconia Block
A. High aesthetic effect, good transparency, natural layer tooth color.
B. Excellent biological compatibility, no metal odor, no black color, and no corrosion, anti allergy, protect the gums and avoid bleeding.

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 ST-M MultiLayer ISO 6872 Standard
Appearance White
Density Pre-Sintering (g/cm3) 3.1 >2.8
Density Post-Sintering (g/cm3) 6.08 ≥6.0
Fracture Strength (Mpa) 1050
Flexural Strength (Mpa) 1200 ≥800
Vicker’s Hardness  (Mpa) 1250
Shrinkage Factor (%) 19~22
Young`s Modulus (Gpa) 200
Light Transmittance (%) 43
Chemical Solubility (ug/cm2) 2.8 100
Radioactivity (Bq.g) ≤0.003 ≤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

For Open System, Amann Girrbach system, Zirkon Zahn System
D98/95*10 D98/95/71*18
D98/95/71*12 D9895/71*20
D98/95/71*14 D98/95/71*22
D98/95/71*16 D98/95/71*25
Classification HT ST ST-C Pre-shaded ST-M Multilayer
Indication Anterior ×
Inlay × ×
HT: High Translucent, ST: Super Translucent
“√” means best choosing
“×” means not best choosing