3M ESPE RelyX U200 is a self-adhesive resin cement designed for reliable bonding of indirect restorations. It is ideal for cementing crowns, bridges, inlays, and onlays, providing excellent adhesion to both tooth structure and restorative materials. The unique formulation ensures minimal post-operative sensitivity and high bond strength. This product is essential for dental professionals seeking efficiency and durability in their restorative procedures.

It completely eliminates the separate, multi-step protocols of acid etching, priming, and bonding. It features a proprietary phosphoric acid methacrylate chemistry that allows it to bond directly to both tooth structure and restorative materials simultaneously

Primary Clinical Indications

The cement covers nearly the entire spectrum of indirect cementation, including:

• Restorations: Full crowns, bridges, inlays, and onlays made of all-ceramic, composite, or metal.
• Endodontics: Fiber-reinforced composite posts, metal posts, and screws.
• Implants: Securing all-ceramic or metal crowns to implant abutments.
• Bridges: 2- or 3-unit Maryland bridges and 3-unit inlay/onlay bridges (note: selective enamel etching is required for these specific configurations to maximize retention)

Specification

The cement comes in a dual-barrel syringe for easy dispensing and mixing. It features a working time of approximately 2 minutes and a setting time of about 5 minutes. RelyX U200 is compatible with various substrates and complies with ISO standards for dental cements. Available in a pack size of 10g.

Usage

For optimal results, ensure the surfaces to be bonded are clean and dry. Apply the cement evenly and follow the manufacturer's instructions for curing. Store the product in a cool, dry place away from direct sunlight to maintain its efficacy.

Advanced Benefits for Practitioners

• Virtually No Post-Operative Sensitivity: Because it does not require aggressive phosphoric acid conditioning on dentin, the dentinal tubules remain sealed, avoiding pulpal irritation.
• High Discolouration Resistance: It features advanced color stability and high marginal integrity, which prevents marginal staining over years of intraoral wear.
• Technique Tolerance: Unlike traditional resin cements that fail in wet environments, RelyX U200 performs safely even if minor residual moisture is present on the tooth preparation.
• Easy Cleanup Stage: Excess cement can be flash-cured with a light for 1–2 seconds, causing it to reach a rubbery, gel-like state that peels away effortlessly in clean pieces.