Introduction to dental yttrium-stabilized zirconia powder

Introduction to dental yttrium-stabilized Zirconia Powder:
- Main ingredients: Based on zirconium oxide (ZrO₂), an appropriate amount of yttrium (Y) element is added as a stabilizer to form yttrium-stabilized zirconia (YSZ), common ones include 3Y-TZP (3mol% yttrium-stabilized tetragonal zirconia polycrystals), 5Y-PSZ (5mol% yttrium-stabilized partially stabilized zirconia), etc.
- Appearance: Usually white or off-white fine powder, with uniform particle size, spherical or nearly spherical.

Product characteristics
- High purity: The purity is generally as high as 99% or more, and the impurity content is extremely low, ensuring the stability and performance of the product.
- Controllable particle size: The average particle size can be precisely adjusted in the range of nanometers to micrometers according to needs, such as 0.2-0.5μm, etc., to meet different processing technologies and application scenarios.
- Good dispersibility: It can be evenly dispersed in a solution or mixed system, not easy to agglomerate, and can ensure the uniformity of subsequent molding and sintering processes.

Production process
- Mostly use advanced processes such as chemical co-precipitation and hydrothermal method.

Application field
- All-ceramic crown: It is the main material for making all-ceramic crowns, which can provide good strength, aesthetics and biocompatibility.
- Dental bridge: It is used to connect the abutment teeth on both sides of the missing teeth to restore the chewing function and beauty of the teeth.
- Implant abutment: As a connecting part between the implant and the crown, it can be well combined with the implant and the crown to withstand chewing force.

Packaging and storage
- Generally, sealed packaging such as aluminum foil bags or plastic bottles are used to prevent the powder from getting damp, oxidized or contaminated. When storing, it should be placed in a dry, cool and ventilated place, avoiding direct sunlight and high temperature environment to ensure the stability of product performance.

Advantages of dental yttrium-stabilized zirconia powder:
1. Good biocompatibility
- It has excellent biocompatibility with human tissues, will not cause immune response or inflammation, can remain stable in the oral environment, has no irritation to gums, oral mucosa, etc., can be implanted in the human body for a long time, and has high safety.
2. Excellent mechanical properties
- High strength, can withstand chewing pressure in the mouth, not easy to crack or break, suitable for making various dental restorations.
- Good toughness, can resist wear and fatigue in daily use, and extend the service life of the restoration.
3. Excellent aesthetic performance
- It has a transparency and gloss similar to natural teeth, and can be personalized according to the patient's tooth color. After restoration, it is beautiful and natural, and can be well integrated into the oral environment.
- Good color stability, will not change color or fade in the oral environment, and can maintain the beautiful effect for a long time.
4. Good processing performance
- It can be accurately processed into various complex shapes and sizes of dental restorations through a variety of advanced processing technologies, such as computer-aided design and manufacturing (CAD/CAM) technology, to meet the needs of different patients.
- Easy to shape, can maintain high precision and accuracy during the processing process, ensure that the restoration fits closely with the patient's oral tissue, and improve comfort and functionality.
5. High chemical stability
- The chemical properties are stable in the acid-base environment of the mouth, not easy to be corroded or dissolved, and can maintain the integrity and performance of the restoration.
- Strong resistance to stains and bacteria adhesion, helps keep the oral cavity clean and reduce the occurrence of oral diseases.