Description:
zirconia block Compatible for Wieland ZENO milling system1.high quality of dental powder
2.high bending strength
zirconia blockCompatible for Wieland ZENO millingsystem
ZIRConIA BLOCKS (OD98mm ROUND), compatible witWieland
Zeno, Roland, Origin, VHF, Yena, Imes-Icore,etc
First grade Zirconiapowder
Brand:Zirconstar
Blocks come in packagesof 1 per box
Our ZirconstarZirconia blocks are dedicated to being used in the Dentallaboratory field to make crowns or copingsfor final restoration in the aestheticzone. It is a consumable required byspecific CADCAM milling system machine. By itself it ispresintered zirconia blank.
Characteristics:
-First grade Zirconiapowder
-Made under COLD ISOSTATICUNAXIAL PRESSING AND MACHINING which gives a more uniformfit.
- High mechanical strength reaches as high as 1400 Mpa callednon-fracture zirconia
- Excellent translucent withlight transmittance higher than 30%
-Shrinkage adjusted for 20%
Weprovide highly level quality while keep competitive inprice!
- Sinterization temperature 1530 Celcius 2hours
We choose the best Zirconia powder and utilize a COLDISOSTATIC PRESSING system to form shapes. Isostatic pressing is themethod of creating ceramic blocks from dry powder and applyinguniform pressure from all directions. The process involvesenclosing the powder into a deformable mold and collapsing the moldusing a fluid medium to apply hydrostatic pressure. The mainadvantage of isostatic pressing is the uniform application ofpressure, which leads to a very homogeneous density and shrinkage,yielding a very reproducible process. The production cost by usingIsostatic pressing is much higher than UNIAXEL DRY PRESSING. Butthe quality is also much higher.
Chemical compositions:
ZrO2 HfO2 Y2O3 Al2O3 > 99.9wt%
Y2O3 5.15 /-0.20wt%
Al2O3 0.25 /-0.10wt%
Bending Strengh 1400 Mpa
Sintereddensity:6.07
Hardness(HV10) 1250
FiringInstruction Firing time:
Sinteringindividual crown | |||
Temperaturerising K/min | Temperature C | Timespan hour | Totaltime hour |
0.0 | 20 |
| 0.0 |
10.0 | 900 | 1.5 | 1.5 |
0.0 | 900 | 0.5 | 2.0 |
3.3 | 1450(1530) | 2.8 | 4.8 |
0.0 | 1450(1530) | 2.0 | 6.8 |
10.0 | 900 | 1.0 | 7.8 |
Sintering 3~4bridge | |||
Temperaturerising K/min | Temperature C | Timespan hour | Totaltime hour |
0.0 | 20 |
| 0.0 |
5.0 | 900 | 3.0 | 3.0 |
0.0 | 900 | 0.5 | 3.5 |
2.5 | 1450(1530) | 3.7 | 7.2 |
0.0 | 1450(1530) | 2.0 | 9.2 |
5.0 | 900 | 1.8 | 11.0 |
Sinteringmulti-circular bridge | |||
Temperaturerising K/min | Temperature C | Timespan hour | Totaltime hour |
0.0 | 20 |
| 0.0 |
2.5 | 900 | 5.9 | 5.9 |
0.0 | 900 | 0.1 | 6.0 |
1.7 | 1450(1530) | 5.5 | 11.5 |
0.0 | 1450(1530) | 2.0 | 13.5 |
3.33 | 600 | 4.5 | 18.0 |
BloomdenBioceramics
www.bloomden.com
Zirconia caseshow
