Dental Cerec Block-Lithium Disilicate

Sirona Cerec System Dental Block In Lithium Disilicate

Our Lithium Disilicate Blocks are designed for use with the Sirona Cerec CAD/CAM system, offering a blend of aesthetics, strength, and ease of use in both chairside and laboratory settings. These blocks are known for their glass-ceramic composition, which provides exceptional properties for dental restorations.

Product Features:

• Material Composition: Lithium disilicate, known for its high strength and aesthetic appeal.
• Compatibility: Fully compatible with the Sirona Cerec System for both milling and processing.
• Appearance: Initially light purple (blue porcelain blocks), indicating a partially crystallized state which facilitates easier milling.

Processing Details:

• Milling: The blocks are easy to mill due to their lower hardness in the pre-crystallized state, extending the life of milling burs.
• Crystallization: Post-milling, the restoration undergoes a crystallization process at 840°C for about 20 minutes, achieving full strength with minimal shrinkage.

Block Specifications:

• Sizes: Available in C14 (12x14x18mm) and B40 (40x15x14mm).
• Translucency Options: High Translucency (HT) at 58% and Low Translucency (LT) at 52%.
• Shades: Offered in VITA Classical shades plus additional bleach shades for a wide range of aesthetic needs.

Advantages of Lithium Disilicate:

1. Aesthetic Excellence: High translucency options mimic natural teeth, providing superior cosmetic results.
2. Durability: Exhibits high chemical stability and binding strength, ensuring long-lasting restorations.
3. Efficiency: The quick crystallization process reduces chairside time, enhancing workflow efficiency.
4. No Glazing Required: The material’s unique color change during crystallization eliminates the need for glazing, simplifying the process.

Mechanical Properties:

• Hardness: Vickers hardness of 5400±400 MPa, closely mimicking natural tooth hardness.
• Fracture Toughness: 2.23 MPa m^1/2, indicating resistance to fracture.
• Flexural Strength: Minimum biaxial flexural strength post-crystallization is 300 MPa, ensuring durability under chewing forces.

Functional Benefits:

• Wear Resistance: The hardness matches that of natural teeth, reducing wear on opposing teeth.
• Fit and Finish: The nano-micron crystallization structure enhances edge stability and fit, simplifying the seating process and reducing the need for adjustments.

Aesthetic and Functional Integration:

• Transparency: Provides more intuitive aesthetic outcomes with near-zero shrinkage, facilitating precise digital design and processing.
• Comfort and Efficiency: Ensures a comfortable experience for patients with rapid diagnosis and treatment capabilities.

Crystallization timetable