FDA Zirconium Oxide Ceramic Super Translucent Multi - Layer Zirconia In Dentistry
Specifications
|
Wieland System |
Cerac in lab (Sirona)System |
|
D98*10 |
14*13*13 |
|
D98*12 |
20*14*15 |
|
D98*14 |
20*19*15 |
|
D98*16 |
40*14*15 |
|
D98*18 |
40*19*15 |
|
D98*20 |
55*19*15.5 |
|
D98*22 |
65*25*22 |
|
D98*25 |
65*40*22 |
|
|
85*40*22 |
FAQ
Q: Is the fit of a zirconia coping important since the zirconia ceramic is so strong?
A: The thicker the cement the weaker the all-ceramic restoration. Cements are not as rigid as zirconia ceramic, so a thicker cement layer will cause more flexural deformation of a ceramic core, increasing the potential for fracture.
Q: Is it ok to grind on a zirconia coping without water spray?
A: Water spray is necessary when grinding on a zirconia ceramic coping. The white light or hot spot you see between a diamond and a zirconia ceramic has been measured at 1500 ºC. If the temperature of zirconia ceramic rises above 1000 ºC, a phase change can occur that will induce cracking and surface defects, lowering the strength of the coping.
Q: Is preparation design of a zirconia coping important since the zirconia ceramic is so strong?
A: Preparation design of the zirconia coping is very important. The thickness of unsupported porcelain should not exceed 2 mm. The zirconia coping should be as thick as needed to avoid unsupported porcelain.
