Neo Spectra ST Flow — Flowable Nanoceramic Composite with SphereTEC® Technology

Neo Spectra ST Flow by Dentsply Sirona is an advanced flowable composite that combines high aesthetics, excellent strength, and unique handling characteristics. Powered by the innovative SphereTEC® filler technology, this material sets new standards in the flowable composite category, offering clinicians the perfect balance between fluidity and stability.

Revolutionary SphereTEC® Technology

Unlike traditional flowable materials, Neo Spectra ST Flow contains spherical filler granules, which provide:

• Thixotropy (Flow-on-Demand): The material extrudes easily from the syringe and spreads evenly under instrument pressure or during placement, yet becomes instantly stable once the influence stops. This prevents unwanted slumping from upper cavity walls.

• High Filler Loading: The spherical shape allows for denser particle packing, making the material exceptionally strong and wear-resistant—a quality not always found in flowable composites.

• Instant Polishing: The spherical particles significantly simplify the polishing process, allowing a deep, mirror-like gloss to be achieved in seconds.

Key Advantages of Neo Spectra ST Flow

1. Versatile Shading (Cloud Shades): Like the entire Neo Spectra ST line, the flowable version utilizes the "Cloud Shade" system. Only 5 shades (A1–A4) intelligently adapt to the surrounding tooth structure thanks to a powerful chameleon effect.

2. Stain Resistance: After polymerization, the material's surface becomes extremely smooth, minimizing plaque accumulation and pigmentation from coffee, tea, or food.

3. High Radiopacity: The material is clearly visible on X-rays, allowing for easy diagnostic monitoring of the restoration over time.

4. Convenient Packaging: The set includes 2 syringes of 1.8g each, ensuring long-term use and precise dosing.

Indications for Use

Neo Spectra ST Flow is ideal for:

• Creating an adaptive layer (liner) under direct restorations.

• Restoring small cavities (e.g., Class V or small Class I defects).

• Sealing fissures and micro-cracks.

• Cementing aesthetic brackets or indirect restorations.

• Repairing composite and ceramic restorations.

Expert Tip: Due to its ability to adapt perfectly to the cavity floor, Neo Spectra ST Flow is highly recommended as a base layer before applying high-viscosity composites like Neo Spectra ST HV or LV to avoid air entrapment.