UT Multilayer Zirconia Disc(98mm) - Ultra Translucent Gradient Block

Milling & Processing Workflow:

Step 1: CAD Design & Milling (30-45 minutes)

• Design restoration with 20-25% enlargement to compensate for sintering shrinkage
• CRITICAL: Orient restoration correctly - ensure gradient flows from cervical (bottom/darker) to incisal (top/translucent)
• Use wet milling for optimal results and minimal tool wear
• Recommended bur: 1.0-2.0mm diameter carbide or diamond burs
• Milling speed: 20,000-40,000 RPM
• Feed rate: Moderate (adjust based on detail complexity)
• Mill in pre-sintered state (multi-layer gradient, porous material)
• Important: Ensure adequate thickness for veneers (minimum 0.5-0.8mm recommended)

Step 2: Sintering (8-10 hours) – NO STAINING NEEDED

• Place milled restoration directly in the sintering furnace (skip staining step)
• Follow the recommended sintering cycle at 1450°C (see table above)
• During sintering, the pre-integrated gradient becomes fully developed and fixed
• Material shrinks 20-25% and becomes fully dense and strong (650 MPa)
• Ensure proper support to prevent warping
• Allow complete cooling before handling

Step 3: Glazing (Optional) & Cementation

• Optional: Apply glaze for enhanced surface finish (fire at 800-900°C)
• Optional: Apply surface stains for fine characterization if needed
• Check fit and make minor adjustments if needed
• Clean thoroughly before cementation
• Use resin-modified glass ionomer or resin cement
• Consider airborne particle abrasion for improved bond strength

🎨 Gradient Orientation is Critical: Always ensure the restoration is oriented correctly during milling. The gradient should flow from cervical (darker, less translucent) to incisal (lighter, more translucent) to achieve natural-looking results. Incorrect orientation will result in reversed esthetics.

Why Choose UT Multilayer Zirconia?

The UT Multilayer Zirconia is developed for cases requiring absolute maximum anterior esthetics. Combining 49% ultra translucency (the highest in our series) with a 4-layer gradient structure, it provides:

• Maximum Esthetics: 49% ultra translucency provides the highest light transmission and most natural, enamel-like appearance in our series
• Natural Tooth Mimicry: 4-layer gradient replicates the natural color and translucency transition of real teeth
• Time Savings: Eliminate manual staining and layering (save 20-30 minutes per case)
• Consistent Results: Factory-controlled gradient ensures predictable, batch-to-batch esthetic outcomes
• Seamless Integration: Natural gradient creates restorations that blend perfectly with adjacent teeth
• Reliable Strength: 650 MPa strength suitable for veneers and anterior restorations

UT Multilayer vs SHT Multilayer vs UT Pre-shaded

Recommendation: Choose UT Multilayer for maximum veneer esthetics with natural gradient and ultra-translucency. Choose SHT Multilayer for cases needing more strength. Choose UT Pre-shaded for efficient production with uniform color.

Designed for Dental Laboratories

OnePro Dental works directly with dental laboratories worldwide, providing reliable CAD/CAM materials that combine performance, consistency, and cost efficiency.

The UT Multilayer Zirconia Disc is an excellent choice for labs seeking absolute maximum anterior esthetics with natural gradient effects, ultra-translucency, and streamlined workflows.

Frequently Asked Questions (FAQ)

💎 Product Features & Multi-Layer + Ultra Translucency Advantages

Q: What makes UT Multilayer different from SHT Multilayer?
A: UT Multilayer features 49% ultra translucency – the highest in our series – compared to SHT Multilayer's 47%, providing maximum light transmission and the most natural, enamel-like appearance. Both have a 4-layer gradient structure, but UT offers absolute maximum esthetics while SHT provides higher strength (1000 MPa vs 650 MPa). UT is specifically designed for veneers and anterior crowns only.

Q: How many layers does UT Multilayer have?
A: UT Multilayer has 4 distinct layers:
• Cervical layer (bottom): Higher chroma, moderate translucency - mimics the gingival area
• Body layer (middle): Balanced color and 49% ultra-translucency - main tooth structure
• Incisal layer (top): Lower chroma, maximum translucency - natural cutting edge
This gradient flows smoothly from darker/opaque to lighter/translucent, with the highest light transmission in our series.

Q: What is the flexural strength of UT Multilayer Zirconia?
A: UT Multilayer Zirconia has a flexural strength of 650 MPa, the same as UT White and UT Pre-shaded. This makes it suitable for veneers, anterior crowns, and short-span anterior bridges, though it's specifically optimized for maximum veneer esthetics.

Q: How many shade options are available?
A: UT Multilayer Zirconia is available in 20 comprehensive shades:
• 16 Vita shades: A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4
• 4 Bleach shades: BL1, BL2, BL3, BL4
Each shade features the same 3-layer gradient structure with 49% ultra-translucency.

🔧 Milling & Processing

Q: How do I orient the restoration correctly during milling?
A: Critical: The gradient must flow from cervical (darker, bottom) to incisal (translucent, top). In your CAD software, position the restoration so the cervical margin is at the bottom of the disc, and the incisal edge is at the top. Incorrect orientation will reverse the gradient and compromise esthetics.

Q: Which CAD/CAM systems are compatible with UT Multilayer Zirconia?
A: UT Multilayer Zirconia Disc (98mm) is compatible with most open CAD/CAM milling systems, including Roland, VHF, Amann Girrbach, Sirona, and similar 98mm disc systems.

Q: What milling parameters should I use?
A: Recommended parameters:
• Bur size: 1.0-2.0mm diameter carbide or diamond burs
• Milling speed: 20,000-40,000 RPM
• Feed rate: Moderate (adjust based on detail)
• Milling type: Wet milling preferred
• Enlargement factor: 20-25% to compensate for sintering shrinkage

Q: Do I need to stain before sintering?
A: No! The gradient color is already integrated into the material. Simply mill with correct orientation and sinter – the gradient will fully develop during sintering. This saves 20-30 minutes compared to manual staining or layering.

Q: What is the linear shrinkage rate?
A: UT Multilayer Zirconia has a linear shrinkage rate of approximately 20-25% during sintering. Always design and mill restorations with this enlargement factor to achieve the correct final size.

🎨 Gradient & Esthetics

Q: Can I still apply surface stains for characterization?
A: Yes! While the gradient is pre-integrated, you can still apply surface stains after sintering for additional characterization, incisal effects, or fine-tuning. The gradient base provides a natural foundation.

Q: How does the 49% translucency compare to SHT Multilayer?
A: UT Multilayer's 49% ultra translucency provides maximum light transmission compared to SHT Multilayer's 47%, creating the most natural depth and vitality. This makes UT Multilayer ideal for absolute maximum veneer esthetics.

Q: What happens if I mill the restoration upside down?
A: If milled incorrectly, the gradient will be reversed - the incisal edge will be darker, and the cervical area will be translucent, resulting in an unnatural appearance. Always verify orientation before milling.

🏥 Clinical Applications

Q: What cementation protocol should I use?
A: For UT Multilayer Zirconia restorations:
1. Clean restoration thoroughly
2. Consider airborne particle abrasion (50μm Al₂O₃) for improved bond
3. Use resin-modified glass ionomer or resin cement
4. Follow the cement manufacturer's instructions
5. Ensure complete seating and remove excess cement

Q: Is UT Multilayer suitable for veneers?
A: Yes! UT Multilayer is excellent for anterior veneers. The 49% ultra-translucency and gradient create exceptional natural depth and vitality. Ensure adequate thickness to showcase the gradient effect (minimum 0.5-0.8mm recommended).

Q: Can UT Multilayer be used for posterior restorations?
A: No. UT's 650 MPa strength is specifically designed for anterior restorations only. It is NOT recommended for posterior teeth (premolars, molars), long-span bridges, or high-stress areas. For posterior restorations, choose SHT Multilayer (1000 MPa), ST Multilayer (1200 MPa), or HT (1300 MPa).

📦 Ordering & Packaging

Q: What thickness and shade combinations are available?
A: UT Multilayer Zirconia is available in:
• 7 thickness options: 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm
• 20 shade options: 16 Vita shades (A1-A4, B1-B4, C1-C4, D2-D4) + 4 Bleach shades (BL1-BL4)

Q: How many restorations can I get from one disc?
A: The number depends on disc thickness and restoration size. Typically, a 20mm disc can produce 5-8 veneers or 3-5 anterior crowns.

Q: Do you offer sample discs for testing?
A: Yes! We offer sample discs for qualified dental laboratories. Contact our sales team at oneprodental@gmail.com to request samples and experience the gradient effect with ultra-translucency firsthand.

Q: What is your shipping time?
A: We offer fast global shipping with delivery in 5-10 business days. Express shipping options are available for urgent orders. Free shipping on orders over $500!

🛠️ Technical Support

Q: What if I need help with orientation or processing?
A: Our technical support team is here to help! We provide assistance with proper orientation, milling parameters, sintering protocols, and workflow optimization. Contact us anytime.at oneprodental@gmail.com

Q: Do you offer bulk pricing for dental laboratories?
A: Yes! We provide competitive volume discounts for dental laboratories. Contact our sales team for bulk pricing, partnership opportunities, and customized solutions tailored to your laboratory's needs.

💬 Still have questions? Contact our expert team at oneprodental@gmail.com or use the live chat feature. We're committed to your success with every restoration!

OnePro Dental Zirconia Series