B40 Low Translucency Lithium Disilicate Blocks Cubes for Sirona Cerec Systems

The B40 low translucency (LT) lithium disilicate blocks cubes deliver outstanding masking power and natural aesthetics for Sirona Cerec chairside restorations. Each 4-piece pack is manufactured from premium lithium disilicate glass ceramic, providing superior opacity to conceal discolored substrates, metal posts, and dark core build-ups while maintaining a warm, tooth-like appearance after crystallization.

Key Features & Benefits

• Low Translucency (LT): B40 shade in LT offers enhanced opacity, ideal for masking discolored abutments and metal posts beneath the restoration.
• High Flexural Strength: Achieves ≥ 400 MPa after crystallization, providing dependable resistance to chipping, cracking, and occlusal wear.
• Efficient Chairside Processing: Single-stage crystallization program completes in approximately 20 minutes, keeping patient appointments short.
• Reliable Adhesive Bonding: Excellent etchability and silanization response ensure secure, long-lasting cementation to tooth structure.
• Proven Biocompatibility: Passes all ISO 10993 biological evaluation tests including cytotoxicity, sensitization, and oral mucosa irritation.
• Universal Machine Fit: Sized for Sirona Cerec MCXL, MCX5, and Primemill units, and compatible with numerous lab-based wet milling machines.
• Natural Warm Shade: B40 provides a warm, reddish-yellow tone that works beautifully for patients with naturally warm dentition.

Technical Specifications

Clinical Applications

• Crowns Over Metal Posts: Low translucency effectively masks underlying metal structures while delivering a natural-looking result.
• Posterior Crowns & Onlays: Combines high strength with reliable opacity for demanding posterior load-bearing situations.
• Restorations on Discolored Teeth: LT material conceals dark substrates from endodontically treated or heavily stained teeth.
• Bridge Abutment Crowns: Provides consistent shade match in multi-unit cases where substrate color varies between abutments.
• Implant-Supported Single Crowns: Masks titanium abutment gray-through while offering lifelike surface texture and shade depth.

Compatible Milling Machines

The B40 LT Lithium Disilicate Blocks Cubes fit all current Sirona Cerec MCXL and MCX5 milling chambers. They also work with laboratory wet milling systems from Roland DWX series, VHF, and IMES ICORE. Explore our complete lithium disilicate blocks cubes collection for all available shade and translucency combinations.

Frequently Asked Questions

Q: When should I choose LT over HT glass ceramic blocks?
A: Choose LT when you need to mask a dark or discolored substrate, such as metal posts, darkened dentin, or titanium implant abutments. HT is better for situations where the underlying tooth color is favorable and maximum translucency is desired.

Q: What is the recommended minimum wall thickness for B40 LT blocks?
A: A minimum wall thickness of 1.0 mm is recommended for crowns and 0.5 mm for veneers to ensure adequate strength and optical performance.

Q: Are these blocks compatible with stain-and-glaze finishing?
A: Yes. After crystallization, B40 LT restorations can be characterized with compatible stain and glaze materials to achieve individualized shade effects.

Q: How many units can I expect to mill from one block?
A: Each block yields one single-unit restoration. This pack contains 4 blocks for 4 individual restorations.

Q: What crystallization temperature is required?
A: The standard crystallization program reaches a final temperature of 840°C with a hold time of approximately 7 minutes, using any standard dental porcelain furnace.

For professional dental laboratory use only.