When it comes to materials used in dental applications, zirconia and ceramic are two of the most common options.
5 Key Points to Know About Zirconia and Ceramic
1. Composition and Structure
Zirconia:
- Made up of tiny white crystals containing zirconium dioxide.
- Exhibits three major crystal structures: monoclinic, tetragonal, and cubic.
- The transformation from monoclinic to polytetragonal during sintering enhances its strength and translucency.
Ceramic:
- Comprises porcelain fused to a metal base.
- Offers a combination of aesthetic appeal and structural support from the metal.
2. Sintering Process
Zirconia:
- Requires high temperatures (around 1,100°C to 1,200°C) to transform from a chalk-like monoclinic structure to a dense polytetragonal state.
- This process increases its hardness and strength, making it difficult to mill or contour.
Ceramic:
- Sintering in ceramics also reduces porosity and increases density.
- Involves a different material composition and transformation process.
3. Properties and Applications
Zirconia:
- Known for its high toughness and strength.
- Widely used in dentistry for crowns due to its compatibility with human tissues, lack of allergenic properties, and aesthetic appeal.
- Zirconia crowns are typically more expensive but offer superior durability and a natural appearance.
Ceramic:
- While also used in dentistry, ceramic materials, especially those fused with metal, may not match zirconia's strength and lightness.
- However, they are often less expensive and still provide a good balance of aesthetics and durability.
4. Durability and Lightness
Zirconia:
- Favored for its superior strength, lightness, and biocompatibility.
- Ideal for dental restorations where durability and aesthetics are critical.
Ceramic:
- Offers a more cost-effective solution with a balance of aesthetic and structural properties.
5. Cost Considerations
Zirconia:
- Typically more expensive due to its superior properties.
Ceramic:
- Often less expensive, providing a good balance of aesthetics and durability.
Continue exploring, consult our experts
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