PermaFlo DC Dual-Cure Luting: Crown Cementation Steps

Quick Answer

Cement crowns reliably by following a clean, dry protocol with PermaFlo DC dual-cure luting resin. Its versatility makes it ideal for both luting and post cementations.

Crown Cementation Steps with PermaFlo DC

1. 1. Prepare the Tooth and Crown: Clean the prepared tooth thoroughly with pumice or a non-fluoride prophy paste. Rinse and dry. Treat the crown internally with a suitable silane or primer if recommended. Common mistake: leaving residual moisture or debris on the tooth surface, which weakens the bond. Check for complete dryness before proceeding.
2. 2. Apply Adhesive to the Tooth: Apply a compatible dentin/enamel adhesive to the prepared tooth. Light-cure according to manufacturer instructions. Common mistake: over-wetting or pooling adhesive, which can lead to sensitivity or reduced bond strength. Use a gentle air stream to thin the adhesive layer evenly.
3. 3. Dispense and Load PermaFlo DC: Shake the PermaFlo DC syringe gently. Dispense a small amount onto a mixing pad. Use a brush or tip to apply a thin, even layer inside the crown. Common mistake: applying too much resin, causing excess to squeeze out and complicate cleanup. A thin, uniform coating is sufficient.
4. 4. Seat the Crown: Place the loaded crown onto the prepared tooth with firm, steady pressure. Hold in place for 2–3 seconds. Common mistake: rocking the crown during seating, which can introduce voids or misalignment. Maintain a single, stable seating motion.
5. 5. Remove Excess Resin: Immediately after seating, use a brush or explorer to remove excess resin from the margins. Light-cure the margins for 1–2 seconds to gel the resin, then clean thoroughly. Common mistake: waiting too long to remove excess, making cleanup difficult. Work quickly—excess resin hardens fast.
6. 6. Final Light-Cure: Light-cure all margins for 20–40 seconds per side, depending on your curing light. For opaque crowns, rely on the self-cure component to ensure deep polymerization. Common mistake: under-curing margins, leading to premature failure. Confirm the light output is adequate with a radiometer.

Product Facts

• PermaFlo™ DC -Dual-Cure Composite Luting/Restorative Resin: PermaFlo DC is the most versatile product within Ultradent’s cement family, ideal for luting, post cementations, and more. You can use one resin for multiple procedures, simplifying inventory and ensuring consistent performance across different cementation tasks.