What Is Zirconia Ceramic
What Is Zirconia Ceramic?
Zirconia is a white crystalline oxide of zirconium. The term "zirconia" is also used to refer to zirconium dioxide, which is a white crystalline mineral. Zirconia ceramics are used for a wide variety of applications and are very durable.
Physical-chemical Zirconia Ceramic
Zirconia ceramics exhibit excellent physical-chemical properties and biocompatibility. They are also known for their high aesthetic qualities. These properties are further enhanced by a variety of treatments, including physical sandblasting, chemical bonding with the functional monomer 10-MDP, and additive manufacturing. However, the bonding performance of zirconia ceramics needs to be confirmed with rigorous experiments and long-term follow-up of clinical cases.
Zirconia is a polycrystalline material with cubic and tetragonal phases. The cubic phase is the main phase of zirconia, and the tetragonal phase is a minor phase. It has excellent mechanical properties, including low thermal conductivity. It is highly resistant to corrosion, making it an excellent candidate for thermal barrier coatings.
Mechanical Zirconia Ceramic
Zirconia is a common material that is used in numerous applications. Its properties are impressive, including good biocompatibility and chemical inertness. It also has excellent mechanical and tribological properties. However, zirconia-based ceramics exhibit low fracture toughness, a property that can be improved with a ductile phase.
Zirconia is also corrosion and wear-resistant. It has a high elastic modulus of 100 GPa and a tensile strength of 300 MPa. It is also magnetoelectric field-resistant, making it an ideal material for high-voltage components, such as computers.
Optical Zirconia Ceramic
Zirconia Ceramic is a type of optical material. It is a non-crystalline optical material that can be colored to produce various effects. The optical properties of this optical material are measured using the CIEDE2000 formula. The translucency parameter (TP) of the optical materials is the color difference between a white and black background.
In 2001, the author Ruys became involved in the research of ZTA and presented papers on the subject. Until about two years later, he continued his involvement in the field. At the time, pure alumina was still viewed as a functional material, whereas zirconia was considered superior.
Bond strength Zirconia Ceramic
The bond strength of zirconia ceramics is determined through a combination of two main methods. One method entails applying a resin cement to the zirconia disks and the other requires the use of a composite resin. The first method involves bonding two zirconia disks that have the same density.
Bond strength of zirconia ceramics was assessed using a universal testing machine. This machine uses a jig with two parts. A crosshead is used to test the shear bond strength. The crosshead speed was kept at 1.0 mm/s. Afterwards, the test surface was treated according to the manufacturer's instructions.
Zirconia Ceramic Optical properties
Optical properties of zirconia and dental resin composites are influenced by scattering anisotropy. However, the two materials exhibit similar spectral behavior. The difference lies in the scattering anisotropy factor (SAF), which varies significantly depending on the type of composite material.
This is because zirconia is a nonuniform material with random grain orientation and different refraction indexes. As a result, light passes through zirconia in one direction and scatters when it strikes another grain.
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