Description:
ZirkonzahnM3/ M5 Prettau zirconia blocks 1.Nano zirconia;biocompatible2.High translucent &super translucent availabl
Zirkonzahn M5Prettau zirconia blocks
We offer zirkonzahn 5-TECCAD/CAM milling system 100% compatible zirconiadiscs.
*Size:OD95x25
*Blocks havethe edge groves required for a zirkonzahn 5-TEC machine *Blockscome in packages of 1 per box *First grade zirconiapowder
*Made underCOLD ISOSTATIC PRESSING AND MACHINING which gives a more uniformfit lifetime
*Shrinkagefactor:Carefully determined and put on dics at each productionbatch *Super translucency and mechanical strength, reliablestability; Suitable for crowns & bridge, and anterior &posterior denture.
*CE and FDAapproved
Shipping:
1.you can choose TNT, DHL, FedEx, EMS, UPS or SF.W offer very good discount
For shippingcost.
2.the goodsgenerally can be ready within 72 hours after
You place theorder.
3.we will offer theshipping tracking number once the goods are sent to you.
Physical and Chemical Properties
Property | BloomZir | Requirements for ISO 13356 |
Chemical compositions: ZrO2 HfO2Y2O3 ZrO2 Y2O3 HfO2 Al2O3 Other oxide |
99.6 91.6 5.0 3.0 0.25 <0.15 |
>99.0
4.5 to 5.4 ≤ 5 <0.5 <0.5 |
3-Point Bending strength | 1200 /-50MPa | ≥500MPa |
Sintering density | 6.07~6.09g/cm3 | ≥6.0 g/cm3 |
Young`s modulus | 210 GPa | |
Crystallite size | 32nm | |
Particle size | 0.43um | |
Granule size | 52um | |
Fracture Toughness | 9 Mpa.m1/2 | |
Thermal conductivity | 3.0 W / mK | |
Coefficient of thermal expansion ( 100 -500°C) | 10.5 *10-6 / K | |
Chemical solubility | 2.5µg/cm2 | <100µg/cm2(ISO 6872) |
Radioactivity | 0.015Bq/g | ≤0.2 Bq/g(ISO 6872) |
Biocompatibility1.Introduction
| Bloomzir is a yttrium-stabilized zirconium oxide (Y-TZP). Y-TZPis considered to be a highly compatible material, which has alreadybeen used in medical applications such as artificial hip joints anddental implant abutment. The biocompatibility results recorded forY-TZP also apply to Bloomzir blocks. |
2 .Chemicaldurability
| Dental materials are exposed to a large variety of pH valuesand temperatures in the oral cavity. Chemical durability istherefore a highly important prerequisite for all dental materials.According to Anusavice1, ceramics are among the most durable dentalmaterials. |
Chemical durabilityaccording to ISO 6872:
| Chem. Solubility [μg/cm2] | Limit value according to standard [μg/cm2] | |
| Bloomzir | 2.5 | < 100 |
The chemicalsolubility of Bloomzir block is far below the limit value accordingto the relevant standard. 3.Biocompatibility of yttrium-stabilizedzirconium oxide2 The following tests were conducted on Bloomzirblock Tests into vitro: Cytotoxicity (cell cultures) Chromosomedamage (mutagenicity test, Ames test) Haemolysis Test into vivo:(with rabbits, mice, guinea pigs, and sheep) Haemolysis Acutetoxicity (systemic) Irritation (intracutaneous) SensitizationPyrogenicity test
Test report: (This report is supplied by National Food& DrugAdministration Medical Devices Quality supervision and testingcentre of Peking University)
| Test item | Test criteria | Test result | Test compliance | |
| Bending strength | ≥900Mpa | 1230 | Complied | |
| Chemical solubility | ≤100ug/cm-2 | 2.5ug/cm-2 | Complied | |
| Radioactivity | ≤0.2Bq/g | 0.015 Bq/g | Complied | |
| Biocompatibility | Cytotoxicity test | Cytotoxicity should be grade 0. | Cytotoxicity is 0; there is no Cytotoxicity on specimen. | Complied |
| Short-term systemic toxicity test | This material shall be no toxicity. | During the test, no obvious differences were found between thetest sample and the control group. It shows the test sample has nosystemic toxicity. | Complied | |
| Sensitization test (Delayed-type hypersensitivity test ) | The test sample should be no sensitization. | The reaction grade of 10 animals’ skin scored 0, less than 1.This indicates the test sample has no sensitization. | Complied | |
| intracutaneous irritation test | No irritation | Irritation index: less than 1; the test sample has nointracutaneous irritation. | Complied | |
None of these testsshowed a potential of Bloomzir Block to cause adverse healtheffects.
4.In vitro toxicity /in vitro genotoxity
| Josset et al3 investigated the biocompatibility of two implantmaterials – zirconium oxide and aluminum oxide in osteoblast cellcultures. Both materials were reported to have neither a toxic nora genotoxic |
5.Radioactivity
| The radioactivity of Bloomzir block was measured at theresearch center in China. The measured value of 0.015 Bq/g is muchlower than the maximum value of 0.2 Bq/g permitted by ISO6872. |
6.Conclusion
In the view of the present data and today’s level of knowledge,it can be stated that Bloomzir block does not feature a toxicpotential. If the material is used according to the Instructionsfor Use, it does not pose any risk to the health of patients,dental technicians, and dentists.
Bloomden zirconia case |
