Zirconia is a material that is widely considered safe for use in dental applications.
This is due to several key factors, including its biocompatibility, lack of allergic reactions, and superior mechanical properties.
Zirconia is a high-performance material that is well-suited for various dental applications such as crowns, bridges, and implants.
5 Key Reasons Why Zirconia is Safe for Teeth
1. Biocompatibility and Allergy Safety
Zirconia is compatible with human tissues and does not cause allergic reactions.
This is unlike some traditional materials used for dental crowns.
The biocompatibility of zirconia ensures that it is safe for use in the oral environment.
This reduces the risk of adverse reactions that could lead to complications like inflammation or rejection of the material.
2. Mechanical Properties and Durability
Yttria-stabilized zirconia is characterized by high thermal resistance, low thermal conductivity, chemical stability, and high fracture strength.
These properties make it an ideal material for dental restorations, particularly in areas of the mouth that experience high bite forces.
The material's high flexural strength of over 800 MPa classifies it as a Class 5 zirconia.
This provides an additional safety cushion for long-term use.
3. Crack Resistance and Volume Expansion
Zirconia has a unique property where external stresses can trigger the transformation of tetragonal zirconia to monoclinic zirconia.
This transformation is associated with a 3-4% volume expansion.
This expansion induces compressive stresses that close the tips of any advancing cracks, preventing them from propagating further.
This characteristic makes zirconia superior to other dental ceramics in terms of crack resistance and durability.
4. Sintering and Manufacturing
Zirconia sintering furnaces are used in dental laboratories to process zirconia into dental appliances.
These high-temperature furnaces are essential for the production of zirconia-based dental restorations.
The sintering process ensures that the zirconia is properly consolidated, maintaining its mechanical properties and ensuring the longevity of the dental restoration.
5. Proven Safety and Efficacy
Overall, zirconia is a safe and effective material for dental applications.
Its biocompatibility, lack of allergenic properties, and superior mechanical characteristics make it an excellent choice for dental crowns and other restorations.
The use of zirconia in dentistry has been supported by numerous studies and has a proven track record of safety and efficacy.
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