Zirconia granularpowder for dental pre-sintered porcelain

Introduction:

Dental presintered zirconia granulation powder (R50K) is a promising dental all-ceramic material. With the improvement of aesthetic requirements, beautiful and durable dental all-ceramic prosthesis has attracted much attention. The application of all-ceramic materials is limited because of its high brittleness, beauty and safety. The dental zirconia granulated powder produced by our company is known as ductile ceramics because of its stress-induced phase transformation toughening properties, and it has high strength and good biocompatibility. It is a new all-ceramic material superior to alumina. 3mo1 yttrium oxide stabilized tetragonal zirconia granulation powder R50K is the most widely used biomedical material at present. It has high strength, high hardness, high stability and corrosion resistance. It is suitable for tooth crown and tooth bridge. Dental pre-sintered zirconia granulated powder after pressure-free pre-sintered zirconia ceramic block has a better whiteness and a strong jade texture. It is suitable for milling with manual grinder or CAD/CAM equipment. 3mo1 yttrium stabilized zirconia granulation powder R50KB is a kind of product with added adhesive, which is very suitable for mechanical pressing and isostatic pressing, which saves the user the trouble of adding adhesive. Compared with traditional dental ceramics, tetragonal zirconia granulated powder (t-ZrO2) polycrystalline ceramics (Y-TZP) with yttrium oxide (Y2O3) as stabilizer has higher toughness due to the stress induced toughening of tetragonal zirconia to monoclinic zirconia (m- ZrO2). And has received the universal attention. Dental presintered zirconia granulation powder is an excellent high-tech biomaterial. 

 

Technical indicators:

Model	R50K	R50KR	R50KRA	R50KRB
crystalline phase	3Y Tetragonal phase	3Y Tetragonal phase	3Y Tetragonal phase	3Y Tetragonal phase
ZrO2% (+ HfO2)	94.7±0.3	94.7±0.3	94.7±0.3	94.7±0.3
Y2O3（wt%）	5.3±0.3	5.3±0.3	5.3±0.3	5.3±0.3
Al2O3%≤	0.01	0.01	0.25	0.01
SiO2%≤	0.01	0.01	0.01	0.01
Fe2O3%≤	0.01	0.01	0.01	0.01
CaO%≤	0.005	0.005	0.005	0.005
MgO%≤	0.005	0.005	0.005	0.005
TiO2%≤	0.002	0.002	0.002	0.002
Na2O%≤	0.005	0.005	0.004	0.004
Cl- %≤	0.1	0.1	0.1	0.1
adhesive（wt%）	-	-	-	2(adjustable)
Average particle size um	Airflow powder 50nm	50±5um	50±5um	50±5um