Introduction to the stability of dental zirconia blocks

Dental zirconia blocks have attracted much attention in the field of dental restoration due to their excellent performance, and their stability is mainly manifested in the following aspects:

First, chemical stability

Excellent chemical stability: Zirconia ceramics have good stability in acid-base environment and humidity environment, and no chemical reaction will occur. This means that in the complex and changeable environment of the mouth, zirconia blocks are stable, do not release harmful impurities, and do not deteriorate due to bodily fluids. This chemical stability is an important basis for its use as a dental restorative material.

Biocompatibility: Zirconia blocks have good biocompatibility and can integrate well with oral tissue without causing rejection. This makes the zirconia block will not cause damage to the oral tissue during long-term use, ensuring the long-term stability and safety of the prosthesis.

Second, physical stability

High strength and hardness: Compared with traditional metal materials, zirconia blocks have higher strength and hardness. This allows teeth repaired with dental zirconia blocks to better resist chewing forces and reduce the risk of tooth wear. For example, the strength of Lava zirconia has reached an astonishing 1440MPa, much higher than the level of general zirconia, and this high strength characteristic makes it difficult to crack or damage during use.

High toughness and impact resistance: Zirconia ceramics have high toughness, can resist shock and vibration, and are not easy to break. This characteristic is particularly important in dental restoration, because teeth need to withstand a variety of complex chewing forces and impact forces during use.

Third, aesthetic stability

Color stability: The color stability of zirconia blocks is very good, and it can maintain good aesthetic effect for a long time. This is particularly important for anterior tooth restoration, as the aesthetic appearance of the anterior teeth directly affects the patient's facial appearance and self-confidence.

Fourth, other stability performance

Long-term performance stability: zirconia block has a long service life, which can generally reach more than 10 years or even longer. This is due to its excellent wear resistance and corrosion resistance, so that zirconia blocks can maintain stable performance for a long time.

Low shrinkage: Zirconia blocks show low shrinkage during the production process, which means that they can maintain accurate size and shape after sintering molding, which is conducive to improving the fit and stability of the restoration.

In summary, dental zirconia blocks show excellent performance in the field of dental restoration due to their excellent chemical stability, physical stability, aesthetic stability and long-term performance stability. These stability characteristics make zirconia blocks one of the preferred materials for dental restoration by dentists. However, it should be noted that although zirconia blocks have many advantages, they still need to be reasonably selected and designed according to the specific situation and repair needs of patients during use.