SHT Ultra-Translucent Zirconia Block , 46% Light Transmission , 1000MPa Strength for Aesthetic Crowns

The SHT Ultra-Translucent Zirconia Block redefines dental aesthetics with industry-leading 46% translucency – the highest in its class. Engineered for monolithic restorations, it combines 1000MPa flexural strength (exceeding ISO 6872 Class 5 by 25%) with exceptional light diffusion properties. Pre-sintered at 1500°C using CIP technology, each white block (98/95/92×75mm) maintains uniform density (3.15±0.05 g/cm³) for consistent milling. Compatible with 16/26 shade staining systems, it enables seamless color matching for natural-looking anterior and posterior crowns.

Key Innovations

• Optical Superiority: 46% translucency at 1.0mm thickness – ideal for "invisible" margin designs.

• Aging Resistance: <5% monoclinic phase after accelerated aging ensures decade-long stability.

• Bio-Safety: 0-level cytotoxicity and <0.1 Bq/g radioactivity for patient safety.

• Staining Flexibility: Compatible with dilution liquids for gradient color control.

Technical Specifications

Clinical Advantages

• Eliminates gray gum lines and "bluish" incisal effects under all lighting

• Requires 30% less tooth reduction than metal-ceramic systems

• Full X-ray transparency for unobstructed diagnostics

Production Excellence
Manufactured under ISO 13485 certification with nano-ZrO₂ powder (≥99% purity). Cold isostatic pressing ensures defect-free pre-sintered blocks.

ST/SHT/SHT-ML Sintering

Max Heating rate: 10℃ per minute
Final temperature: 1500℃-1550℃, 1530℃ is best
Holding time at final temperature: 2 hours
Cooling should be done without temperature control in closed furnace
Never open the furnace before it has reached a temperature of less than 80℃ to avoid thermal shocks

Sintering charts: