Kyozir STH-ML Multilayer Zirconia Block High Translucency 42-49% 800MPa for Dental Crown Bridge

Kyozir Introduces STH-ML Multilayer Zirconia Block with 42%–49% Translucency and 800MPa Strength for Advanced Dental Crown and Bridge Restorations

Shenzhen, China – Shenzhen Kyozir New Materials Co., Ltd., a comprehensive CAD/CAM dental solution provider integrating branding, sales, and global marketing, proudly announces its STH-ML Multilayer Zirconia Block. Engineered for high-translucency crown and bridge applications, this advanced dental restorative material delivers a translucency range of 42% to 49% with flexural strength exceeding 800 MPa, offering dental laboratories an optimal balance of natural aesthetics and mechanical reliability.

Exceptional Translucency 42%–49% for Lifelike Aesthetic Results

The STH-ML zirconia block achieves a translucency range of 42% to 49%, closely replicating the optical properties of natural dentition. This high level of light transmission ensures seamless blending with adjacent teeth in both anterior and posterior zones, making it an ideal material for full-contour crowns, anterior bridges, and aesthetically demanding restorations. Unlike traditional opaque zirconia materials, the STH-ML multilayer gradient design eliminates the need for extensive cut-back techniques, significantly streamlining the dental laboratory workflow while maintaining predictable shade accuracy across every restoration.

Optimized Sintering at 1500°C for Dimensional Stability

A key technical advantage of the STH-ML block is its optimized sintering temperature of 1500°C. At this temperature, the material achieves full densification with a final density of 6.07±0.02 g/cm³ and a pre-sintered density of 3.15±0.05 g/cm³. The coefficient of thermal expansion (CTE) measures (10.4±0.5)×10⁻⁶K⁻¹ over the 25–500°C range, ensuring predictable dimensional behavior throughout the sintering cycle. Combined with Kyozir’s precision manufacturing process, this optimized sintering protocol ensures consistent structural integrity with minimal distortion. The pre-sintered chalk-like state also provides excellent CAD/CAM milling characteristics, delivering smooth cutting edges and reduced tool wear during processing.

800MPa Strength Supporting Comprehensive Clinical Indications

With flexural strength exceeding 800 MPa, the STH-ML zirconia block supports a wide range of clinical indications. From single-unit full-contour anterior and posterior crowns to multi-unit bridges of 4 units and beyond, the material demonstrates reliable long-term performance under occlusal loading conditions. Additional supported indications include anterior coping bridges up to 3 units, posterior coping bridges up to 3 units, reduced posterior bridges, anterior and posterior copings, and full-contour restorations. The accelerated aging surface monoclinic phase content remains below 15%, and chemical solubility after sintering is under 100 μg/cm², with radioactivity below 0.1 Bq/g, meeting international safety standards for dental restorative materials.

Premium Raw Materials and Certified Manufacturing

The STH-ML block is manufactured using top-tier zirconia powder sourced from globally recognized suppliers, ensuring batch-to-batch consistency and predictable CAD/CAM milling results. The manufacturing is undertaken by Hunan Ceramaster Material Technology Co., Ltd., which holds international certifications including CE, FDA, ISO, and FSC. Kyozir’s comprehensive quality management system tracks each production batch from raw material receipt through final inspection, ensuring full traceability. The multilayer zirconia architecture replicates natural dentin-to-enamel color transitions without requiring additional manual staining, making it suitable for both chairside and laboratory-based restorative workflows.

About Kyozir – A Rising Star in Dental CAD/CAM Solutions

Founded in August 2023 and headquartered in Shenzhen, Guangdong Province, Kyozir New Materials Co., Ltd. is a fast-growing comprehensive CAD/CAM dental solution provider created by a talented team with over 15 years of experience in the dental industry. Guided by the vision of “Technology Serves Health, Technology Impacts the World” and the mission of “Making Restorations More Natural, Making Treatments Easier,” Kyozir is committed to delivering advanced dental solutions globally.

The company’s product portfolio spans multilayer zirconia blocks, CAD/CAM zirconia discs, pre-shaded zirconia materials, and corresponding dental equipment. Kyozir’s flagship products include the Dream+ multilayer zirconia disc made with 100% Tosoh powder, capable of completing a single crown in just 43 minutes through ultra-fast sintering, and the Alpha+ universal multilayer gradient zirconia disc made with 100% Sinocera powder, widely praised for its exceptional color gradient and reliable performance. Kyozir has exhibited at major international dental events including IDEX, Dental South China, and AEEDC, and its high-quality dental zirconia products have been exported to markets across Asia, Europe, the Americas, and beyond.

For dental laboratories, distributors, and CAD/CAM solution providers seeking a reliable multilayer zirconia material with proven translucency, strength, and clinical versatility, the STH-ML block represents a dependable choice backed by Kyozir’s global technical support and service network.