• Polymer-Reinforced Composition:
• Reinforced with polymers to enhance strength and durability.
• Designed to withstand the functional demands of the restored tooth during temporary placement.
• Zinc Oxide-Eugenol Composition:
• Combines zinc oxide for strength and stability with eugenol for antibacterial and soothing effects on the dental pulp.
• Provides both mechanical resilience and therapeutic benefits.
• Mixing Options:
• Available in both hand-mixing and machine-mixing forms.
• Offers flexibility to suit the preferences of dental professionals.

Overview

• IRM Restorative is a specially formulated intermediate restorative material designed for temporary restorations lasting up to one year.
• Composed of zinc oxide and eugenol, which together provide strength, antibacterial action, and soothing effects on the dental pulp.
• Polymer reinforcement enhances strength, durability, and reliability during the restoration’s functional period.
• Commonly used as an intermediate direct restorative filling material, providing temporary functional and aesthetic restoration until a permanent solution is placed.
• Can also serve as a base material under non–resin-containing permanent restorations, offering a stable foundation for cements and materials such as amalgams, inlays, and onlays.
• Available in two delivery forms:
• Powder/Liquid version for manual mixing (offers flexibility and control).
• Capsule or pre-mixed options for convenience and consistency (if applicable).

Indications

• Suitable for intermediate restorations with a lifespan of up to one year.
• Superior clinical performance compared to other ZOE and EBA formulations for Class I and II restorations (observed at one and two years).
• Ideal for use in:
• Restoration of deciduous teeth (when permanent teeth are within two years of eruption).
• Restorative emergencies and caries management programs.
• Dental school clinics and public health dental programs.
• Used as a base under non–resin-containing restorative materials, such as amalgams, inlays, and onlays.

Contraindications

• Do not use in patients with known hypersensitivity or severe allergic reactions to eugenol or any other material components.
• Not recommended for:
• Direct pulp capping (should not be placed directly on exposed dental pulp).
• Base under resin-containing adhesives, restoratives, or cements.

Advantages

• Sedative effect: Eugenol provides a soothing, sedative-like action on hypersensitive pulp tissue.
• Thermal insulation: Acts as an effective barrier against temperature changes.
• Durability: Exhibits excellent abrasion resistance and low solubility.
• Seal quality: Offers good sealing properties, helping to protect the underlying tooth structure.

COMPOSITION:

Powder;

• Zinc oxide
• Magnesium oxide
• Zinc acetate

Liquid:

• Eugenol
• Acetic acid

Storage conditions:

• Store with original (not dropper cap) caps tightly closed in a well-ventilated place at temperatures between 10 °C and 24 °C (50 °F and 75 °F).
• Protect from moisture.
• Do not freeze.
• Do not use after the expiration date

• 1 x Powder Bottle (38g)
• 1 x Liquid Bottle (14mL)

Cavity Preparation

• Field isolation: Use a rubber dam (recommended) or other preferred isolation method.
• Retention: Ensure cavity design provides adequate mechanical retention for the restorative material.
• Caries removal: Completely excavate any carious tissue using low-speed or hand instrumentation.
• Matrix and wedge: Place where indicated for proper contour and contact.
• Drying: Gently dry the cavity with a cotton pellet; avoid desiccation of dentin.

Pulp Protection

• In deep cavities, cover dentin within 1 mm of the pulp with a hard-setting calcium hydroxide liner (e.g., Dycal).
• Follow the manufacturer’s Instructions for Use for the liner.

Dispensing and Mixing

• Before dispensing:
• “Fluff” the powder by tumbling the bottle to ensure uniform bulk density.
• Measuring:
• Fill the scoop to excess without packing, then level it with the bottle insert.
• Dispense two level scoops of powder onto a clean, non-absorbent mixing pad or glass slab (add more as needed for larger restorations).
• Liquid dispensing:
• Add three drops of liquid for every two scoops of powder.
• Replace the dropper cap immediately after dispensing to prevent evaporation or contamination.

Placement

• Application: Carry the mixed material to the cavity using an appropriate placement instrument.
• Shaping: Adapt, contour, and shape with suitable instruments.
• Technique tip: Dip the instrument into dry powder before placement to reduce sticking.

Use as an Intermediate Restorative Material

• Finishing: Trim excess and smooth the surface by light burnishing.
• Setting time: Initial set occurs in ~5 minutes from the start of mixing.
• Higher temperature, humidity, or powder/liquid ratio may shorten setting time.
• Post-setting steps:
• Remove matrix band (if used) and check occlusion.
• Make final adjustments with a round bur—avoid sharp burs at high speed.
• Do not polish further.
• Follow-up:
• Evaluate the restoration periodically.
• Replace with a final restoration within one year of placement.

Use as a Protective Base

• May be used as a protective base under non–resin-containing restorative materials, such as amalgam or gold.

• Country Of Origin: United States of America
• Manufacturer: Dentsply

• Warranty is not applicable for this product.