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1. What is White Zirconia Blocks?
White zirconia block is a high-performance ceramic material used in the fabrication of dental restorations such as crowns, bridges, veneers, inlays and implant abutments, etc. Within the dental industry, it is common to refer to unstained zirconia block as white zirconia block, and pre-stained block as colored block, white zirconia block is relatively inexpensive, and it can be stained through the post-staining process to achieve the coloring, which is well known for its excellent strength, stability, and natural looking teeth. The blocks are mainly used in dental laboratories where they are milled using CAD/CAM milling machines and then sintered at high temperatures to achieve the final hardness and translucency.
2. Advantages of White Dental Zirconia Blocks Materials
High strength: Suitable for both anterior and posterior restorations, including long-span bridges.
Natural translucency: Closer to natural teeth in shade and brightness, especially in our ST, SHT, and UT series.
Biocompatibility: Safe and well-tolerated by gum tissue.
Stable performance: Minimal shrinkage, reliable in large-scale production.
Flexible applications: From monolithic crowns to layered restorations.
3. Material of White Zirconia Blocks
All our zirconia blocks are made from premium quality Yttria-stabilized zirconium oxide (3Y, 4Y, 5Y), carefully selected for dental applications. We strictly control powder particle size, purity, and homogeneity to ensure stable quality across all batches.
| Component | Content | Function |
| ZrO₂ + HfO₂ + Y₂O₃ | ≥99% | Forms the main structure, ensuring high strength and durability. |
| Y₂O₃ | 4.5% – 6.0% | Acts as a stabilizer to improve toughness and crack resistance. |
| Al₂O₃ | <0.15% | Enhances sintering behavior and mechanical properties. |
| Other oxides | <0.15% | Maintains uniformity and quality without affecting translucency. |
4. Application of White Zirconia Blocks
Our blocks are suitable for:
Crowns & bridges
Veneers & inlays
Implant-supported abutments
Customized full-arch restorations
Temporary and permanent dental prosthetics
We offer four series to meet different clinical needs:
HT (High Strength): Ideal for long-span bridges and posterior teeth.
ST (Super Translucent): Balances strength and esthetics, good for posterior crowns.
SHT (Super High Translucent): Best for anterior restorations with high esthetic demand.
UT (Ultra Translucent): Maximum translucency, designed for top-level esthetic cases.
5. Sintering Curve of White Zirconia Blocks
Each zirconia series has its recommended sintering curve. A typical example:
Heating rate: 8–10°C/min
Holding temperature: 1500–1550°C (depends on block type)
Holding time: 2 hours
Cooling rate: Natural cooling
We provide detailed sintering curves with every shipment for best results.
6. Process of White Zirconia Blocks
Design: Scan the impression and design restoration via CAD.
Milling: Choose the appropriate zirconia block size and type, mill with CAM machine.
Drying: Remove moisture before sintering.
Sintering: Heat treatment as per recommended curve.
Coloring (optional): Pre-shaded or dipped depending on desired effect.
Finishing: Polish, glaze or layer porcelain as needed.
7. Best Practices for Handling and Storing White Zirconia Blocks
Store in a clean, dry place to avoid moisture absorption.
Handle blocks with clean gloves to avoid contamination.
Keep away from direct sunlight and strong acids/alkalis.
Use before expiration date for best performance.
8. How to Cooperate with Us
We support OEM/ODM services and worldwide supply:
MOQ: Flexible for new partners
Free samples: Available for testing
Lead time: Usually 3–7 working days
Support: Technical guides, marketing materials, custom branding
We believe in long-term partnerships and stable supply chains.
9. Our Certifications
CE Certification
ISO 13485 Quality System
FDA Registration
RoHS and REACH Compliance
Chinese National Medical Device Certification
Each production batch undergoes strict quality inspection before leaving the factory.
10. Our Factory
Located in Changsha, China, our factory is equipped with:
Clean room production
Precision isostatic pressing
Automated shaping & pre-sintering lines
In-house lab for quality testing
Professional R&D and support teams
We welcome partners to visit and audit the production process.
11. Frequently Asked Questions about White Zirconia Blocks
Q: Can your blocks work on open CAD/CAM systems?
A: Yes, our blocks support open systems and are compatible with VHF, Roland, Imes-Icore, Wieland, and more.
Q: Do you offer pre-shaded options?
A: Yes, all series are available in both white and pre-shaded types (A1-D4, bleach shades).
Q: How long is the shelf life?
A: 3 years under proper storage conditions.
Q: Can I customize size or packaging?
A: Absolutely. We accept customized orders for both block sizes and private label packaging.
12. White Zirconia Blocks Packaging
Each block is individually packed with:
Vacuum-sealed anti-moisture packaging
Hard paperboard box for protection
Label with product details (series, lot number, shade, size)
Optional customized outer box for OEM orders
