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Product Overview
The ST PLUS White Zirconia Disc is a full-contour zirconia material developed by Changsha Honchon Technology Co., Ltd. for daily production in dental laboratories.
It is designed to balance mechanical strength and translucency, making it suitable for both anterior and posterior crown and bridge restorations.
Available in OD98 / OD95 / AG system sizes, ST PLUS zirconia discs are compatible with mainstream open CAD/CAM systems and support stable, repeatable milling workflows.
Why ST PLUS Zirconia for Dental Labs
ST PLUS is positioned between high-strength zirconia and ultra-translucent zirconia, making it a practical choice for routine full-contour restorations.
Suitable for full contour crowns and bridges
Stable translucency level for consistent aesthetic outcomes
Compatible with HONCHON ST PLUS 16-shade coloring liquids
Designed for efficient milling and predictable sintering
This material is widely used by dental labs seeking reliable performance rather than niche aesthetic materials.
Key Technical Parameters
| Property | Specification |
|---|---|
| Color | White |
| Aesthetic Level | Super Translucent Plus |
| Flexural Strength | 1200 MPa |
| Light Transmittance | 43% |
| Sintered Density | 6.0 g/cm³ |
| Recommended Sintering Temperature | 1530°C |
Recommended Indications
ST PLUS White Zirconia Disc is suitable for:
Inlay / Onlay / Partial Crown
Anterior & Posterior Crowns
Copings and Coping Bridges
Full Contour Bridges (≤ 14 units)
It is especially recommended for monolithic restorations where both strength and aesthetics are required without veneering.
Material Positioning Within Honchon White Zirconia Series
| Type | Translucency | Strength | Main Application |
|---|---|---|---|
| HT / HT Plus | 37–39% | 1350 MPa | Copings, long bridges |
| ST PLUS | 43% | 1200 MPa | Full contour crowns & bridges |
| SHT | 45–46% | 1000–1100 MPa | Full contour restorations |
| UT | 49% | 650 MPa | Anterior aesthetic crowns |
ST PLUS is a balanced option for labs that want stronger performance than SHT, while maintaining better translucency than HT series.
Sintering Recommendation (ST PLUS)
| Step | Temperature (°C) | Time (Min) |
|---|---|---|
| Heating | 20 → 1450 | 270 |
| Holding | 1450 | 120 |
| Cooling | 1450 → Room Temp | Natural |
For best results, follow the recommended sintering curve and avoid rapid cooling.
Production & Quality Control
ST PLUS zirconia discs are produced using:
High-purity dental zirconia powder
Cold isostatic pressing for uniform density
Controlled pre-sintering for better machinability
Each batch undergoes multiple inspections under ISO 13485 quality management to ensure consistent strength, shrinkage rate, and milling behavior.
Sizes & System Compatibility
Open CAD/CAM System: Ø98 mm
ZirkonZahn System: Ø95 mm
Amann Girrbach System: AG format
Thickness options: 10–25 mm
Custom sizes are available for OEM orders.
Cooperation & Supply
OEM / ODM supported
Standard products: 1–3 working days shipment
Stable inventory for bulk orders
Technical support for milling and sintering parameters
Certifications
ISO 13485
CE
FDA
About Honchon Smile
Changsha Honchon Technology Co., Ltd. is a professional manufacturer of dental zirconia materials with over 14 years of production experience.
Our product range includes white zirconia, pre-colored zirconia, multilayer zirconia, PMMA, milling burs, and CAD/CAM accessories, supplied to dental labs and distributors in more than 120 countries.
FAQ
Is ST PLUS zirconia suitable for posterior crowns?
Yes. With 1200 MPa flexural strength, it is suitable for posterior crowns and multi-unit bridges.
Is this material intended for layering?
ST PLUS is mainly designed for full contour restorations, reducing the need for veneering.
Can you supply private label or customized packaging?
Yes, OEM and ODM services are available.
Cases & Feedback
