Yttria-stabilized zirconia is the most commonly used type in dentistry. This is due to its high strength, biocompatibility, and aesthetic properties. It is particularly favored for its ability to resist fracture and its excellent fit with human tissue. This makes it ideal for use in dental implants, crowns, bridges, and other prostheses.
4 Key Benefits of Yttria-stabilized Zirconia in Dentistry
1. High Strength and Durability
Yttria-stabilized zirconia exhibits high fracture strength and durability. This is crucial for dental applications where materials are subjected to significant mechanical stress.
The material's ability to transform from a tetragonal to a monoclinic phase under stress enhances its resistance to cracking and fracture. This transformation results in a volume expansion that can close the tips of any advancing cracks. This prevents further propagation and increases the material's longevity.
2. Biocompatibility
Zirconia is highly biocompatible. This means it is well-tolerated by the human body and does not cause allergic reactions. This property is essential for dental materials, which are in direct contact with oral tissues and saliva.
The compatibility of zirconia with human tissues makes it a safe choice for long-term dental restorations.
3. Aesthetic Properties
Unlike metal-ceramic crowns, zirconia has a homogeneous color and does not contain any metal. This makes it more aesthetically pleasing.
The absence of a metal substructure allows light to pass through the crown more naturally. This closely mimics the appearance of natural teeth. This aesthetic advantage is particularly important in anterior dental restorations where appearance is a critical factor.
4. Processing and Sintering
The use of zirconia in dentistry also involves advanced processing techniques. These include milling and sintering in high-temperature furnaces. These processes are crucial for achieving the desired strength and precision fit of zirconia restorations.
Dental furnaces capable of precise temperature control are essential for sintering zirconia to the correct density and strength. This ensures the final product meets the high standards required for dental applications.
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