Dental zirconia density introduction

Dental zirconia density is described as follows:

1. Density of zirconia:

In general, the density of zirconia is about 6.05g/cm³, which is about twice the density of alumina.

2. Density of different crystal states:

Zirconia has three crystal forms: monoclinic (m-ZrO₂), tetragonal (t-ZrO₂), and cubic (c-ZrO₂), and their densities are 6.65g/cm³, 6.10g/cm³, and 6.27g/cm³, respectively.

3. Application and Features:

The high density of zirconia makes it a material with high hardness and strong wear resistance, which is very suitable for dental restoration, such as making all-porcelain teeth and porcelain Bridges.

In practical applications, in order to obtain the required crystal shape and performance, different types of stabilizers are usually added to make different types of zirconia ceramics, such as partially stabilized zirconia (PSZ) and tetragonal zirconia polycrystalline ceramics (TZP).

4. Density change during preparation:

In the process of preparing zirconia ceramics, sintering temperature will affect its density. For example, in some experiments, when the sintering temperature reaches 1400℃, the relative density of the specimen is close to the theoretical density. However, as the temperature continues to rise to 1500℃, the ceramic body density may show a downward trend, which may be due to the high sintering temperature leading to a decline in material properties.

In general, dental zirconia is widely used in the field of dental restoration due to its high density, high hardness and excellent wear resistance. During preparation and application, the process conditions need to be strictly controlled to ensure the best performance.