DentsplySirona SDR Plus Eco Syringe Universal 1 g type-wire-cutter Yes — it's designed as

Yes — it's designed as a dentin replacement layer and should be capped with a conventional composite as the enamel/occlusal layer

Retreatment of previously filled canals

What materials can I use with this gun

The addition of copper to traditional nickel titanium enhances thermal reactive properties and consistency of forces

Is the cement visible under the restoration

DentsplySirona SDR Plus Eco Syringe Universal 1 g type-wire-cutter Yes — it's designed asComposite base used for posterior restorations, that allows for bulk placements up to 4 mm with a short 20 second cure time. SDR (Stress Decreasing Resin) Technology optimizes the way that the polymer network is formed while curing, reducing the polymerization stress caused by polymers that become too taut. Contains fluoride, radiopaque.