The Most Life-like Zirconia Crown And Bridge Option
May 16, 2019| 
Bring the real strength of full-contour zirconia into the cosmetic zone with crowns and bridges. Our revolutionary new zirconia formulation provides the ultimate in translucency. The crowns, while its 650 MPa flexural strength is nearly twice that of lithium disilicate.
CAD/CAM-fabricated to match all 16 VITA® Classic shades with the industry-leading precision of our digital workflow. It is the next generation of zirconia, which is perfect for patients who want quality and durability.
Indications for zirconia
The zirconia place anywhere you use a lithium disilicate. An ideal combination when you want high aesthetics anterior, single crowns. It is typically not used for veneers. Instead, we would stick to a more bond-able ceramic, like lithium disilicate, or IPS Empress. We recommend this for crowns on premolars, again, part of the aesthetics, or even crowns on molars. The zirconia is ideal for molars because it is more aesthetic than the traditional zirconia due to the translucency.
The zirconia is also an ideal option for 3-unit bridges as well as anterior bridges. For example: Let’s say you are replacing a central, or premolar replacement, and the patient was missing the mandibular second premolar. You could use a bridge, which is very translucent, from the molar to the first premolar.
Advantages
0.8mm of reduction required
Highly aesthetic material with high translucency and natural teeth color
Minimal preparation required
What Kinds of Materials Are in Zirconia Crowns?
One of our flagship materials at our company is our Dental Zirconia, which is also known as our Zirconium Crown. If someone indicates that they are going to order a zirconium crown, really what they are saying is that they are ordering zirconium dioxide. Zirconium dioxide is a blend of heavy metal zirconium, from the periodic table with oxides. When mixed, they become a ceramic material. Often mentioned that zirconium dioxide is metal based. It is metal based before it becomes an oxide, but by definition, it is a non-metallic substance.
Zirconia Ceramic Transformational Toughening
The unique aspect of this material is that it is very stable and reliable. In fact, the zirconium dioxide that we see with our zirconia gets stronger as it is stressed. It is what we call transformational toughening, and as you apply pressure or force on the restorative material, the zirconium dioxide, you get increased cross-linking of the material. This cross-linking eliminates further propagation of fractures, which is why we seek traditional ceramics or ceramic on metal that won’t break under stress.
Durability and Strength
The zirconia is durable. It is something that is predictable and something that you, as a clinician can rely on for your patients. The flexural strength of a zirconia is about 1100 megapascals. The zirconia is about 650, even though that is only half when you compare it to material like the empress, which has excellent clinical performance, it is a flexural strength is only 200. That is 1/3 of that of our zirconia, a 1/7 of that of our emax is about 400, so 400 megapascals flexural strength is less than 60% what we see with our zirconia and less than 30% of what we see with our zirconia.