SHT Multilayer Zirconia Disc 98mm - Gradient Shade Dental 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)

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 (see table above)
• During sintering, the pre-integrated gradient becomes fully developed and fixed
• Material shrinks 20-25% and becomes fully dense and strong (1000 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 SHT Multilayer Zirconia?

The SHT Multilayer Zirconia is developed for cases requiring maximum anterior esthetics. Combining 47% translucency (higher than ST Multilayer's 43%) with 4-layer gradient structure, it provides:

• Superior Translucency: 47% translucency provides better light transmission than ST Multilayer for a more natural appearance
• 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: 1000 MPa strength suitable for most anterior and posterior applications

SHT Multilayer vs ST Multilayer vs SHT Pre-shaded

Recommendation: Choose SHT Multilayer for maximum anterior esthetics with natural gradient and high translucency. Choose ST Multilayer for cases prioritizing strength. Choose SHT 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 SHT Multilayer Zirconia Disc is an excellent choice for labs seeking maximum anterior esthetics with natural gradient effects, enhanced translucency, and streamlined workflows.

Frequently Asked Questions (FAQ)

💎 Product Features & Multi-Layer + High Translucency Advantages

Q: What makes SHT Multilayer different from ST Multilayer?
A: SHT Multilayer features 47% translucency compared to ST Multilayer's 43%, providing superior light transmission and a more natural appearance. Both have 4-layer gradient structure, but SHT offers enhanced esthetics while ST provides higher strength (1200 MPa vs 1000 MPa).

Q: How many layers does SHT Multilayer have?
A: SHT Multilayer has 4 distinct layers:
• Cervical layer (bottom): Higher chroma, moderate translucency - mimics the gingival area
• Body layer (middle): Balanced color and 47% translucency - main tooth structure
• Incisal layer (top): Lower chroma, higher translucency - natural cutting edge
This gradient flows smoothly from darker/opaque to lighter/translucent with enhanced light transmission.

Q: What is the flexural strength of SHT Multilayer Zirconia?
A: SHT Multilayer Zirconia has a flexural strength of 1000 MPa, the same as SHT White and SHT Pre-shaded. This makes it suitable for most anterior and posterior restorations, though it's optimized for anterior esthetics.

Q: How many shade options are available?
A: SHT 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 47% 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 SHT Multilayer Zirconia?
A: SHT 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: SHT 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 47% translucency compare to ST Multilayer?
A: SHT Multilayer's 47% translucency provides superior light transmission compared to ST Multilayer's 43%, creating more natural depth and vitality. This makes SHT Multilayer ideal for maximum anterior 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 unnatural appearance. Always verify orientation before milling.

🏥 Clinical Applications

Q: What cementation protocol should I use?
A: For SHT 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 SHT Multilayer suitable for veneers?
A: Yes! SHT Multilayer is excellent for anterior veneers. The 47% translucency and gradient create exceptional natural depth and vitality. Ensure adequate thickness to showcase the gradient effect (minimum 0.8-1.0mm recommended).

Q: Can SHT Multilayer be used for posterior restorations?
A: While SHT Multilayer has sufficient strength (1000 MPa) for most posterior use, it's optimized for anterior esthetics. For high-stress posterior cases, consider ST Multilayer (1200 MPa) or HT (1300 MPa).

📦 Ordering & Packaging

Q: What thickness and shade combinations are available?
A: SHT 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: Under normal nesting and standard posterior crown design, one 98mm zirconia disc (12mm thickness) can typically produce approximately 25–35 single crowns.
The actual yield may vary depending on crown design, tooth size, nesting efficiency, and processing loss.

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 see the gradient effect with enhanced 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 at oneprodental@gmail.com anytime.

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