GrandioSO 4U is a next-generation universal nano-hybrid composite that combines the esthetics of a premium universal composite with the efficiency of bulk-fill placement. It features VOCO’s proprietary Visual Transformation Technology (VTT), allowing up to a 4 mm depth of cure in only 10 seconds (20 seconds for shade A4), while delivering highly esthetic, tooth-like results after polymerization.

No. GrandioSO 4U is classified as a universal composite with bulk-fill efficiency. Unlike traditional bulk-fill materials that remain highly translucent and may compromise esthetics, GrandioSO 4U undergoes a controlled translucency-to-opacity shift during curing, resulting in natural-looking restorations.

GrandioSO 4U is available in five cluster shades that collectively cover all 16 classical VITA^® shades, significantly simplifying shade selection and inventory management. Bleach and Opaque shades are also available.

VTT allows GrandioSO 4U to be highly translucent before curing for optimal light penetration and depth of cure. During polymerization, the material becomes more opaque, achieving natural esthetics similar to layered universal composites.

GrandioSO 4U provides a reliable depth of cure of up to 4 mm in a single increment. Most shades (4 out of 5) require only 10 seconds of light curing; shade A4 requires 20 seconds.

GrandioSO 4U contains an exceptional 91% filler content by weight. This extremely high filler loading contributes to low shrinkage, excellent wear resistance, and outstanding color stability.

Polymerization shrinkage is 1.44% by volume, which is significantly lower than many universal composites.

GrandioSO 4U has a modulus of elasticity of 15.7 GPa, closely matching natural dentin. This dentin-like elasticity helps distribute occlusal stress more naturally and supports long-term restoration stability.

Yes. GrandioSO 4U is indicated for universal use, including highly esthetic anterior restorations and load-bearing posterior restorations.

No. GrandioSO 4U is designed to be placed in a single increment up to 4 mm without the need for layering or an additional capping layer.

Standard LED curing lights with an output of at least 1,000–1,200 mW/cm² are sufficient for proper polymerization.

Yes. GrandioSO 4U offers extremely high radiopacity of approximately 900% aluminum equivalency (Al), allowing excellent visibility on radiographs and aiding in the detection of margins and secondary caries.

GrandioSO 4U is compatible with all resin-based or methacrylate-based adhesives. VOCO recommends Futurabond U, which supports self-etch, selective-etch, and total-etch techniques.

Yes. GrandioSO 4U can be used in pediatric dentistry, particularly for permanent teeth and restorations where reduced chair time is beneficial.

Yes. GrandioSO 4U is suitable for core build-ups when proper adhesive protocols are followed and adequate curing access is ensured.

Yes. GrandioSO 4U is compatible with composite warming devices, which may improve flow and adaptation without negatively affecting material properties.

GrandioSO 4U reduces placement time, minimizes technique sensitivity, simplifies shade selection, and maintains excellent esthetics and mechanical performance without traditional layering.

GrandioSO 4U is indicated for Class I–V restorations, including anterior esthetic restorations and posterior load-bearing cavities.