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Dentsply Sirona IRM®
Intermediate Restorative Material
Brand : Dentsply Sirona
₹ 2,400.00
In Stock
IRM® Intermediate Restorative Material is a polymer-reinforced zinc oxide-eugenol composition restorative material designed for intermediate restorations intended to remain in place for no longer than one year. IRM® Intermediate Restorative Material may also be used as a base under restorative materials and cements that do not contain resin components.
Indications
• Intermediate (temporary, less than 1 year) direct restorative filling material
• Base material under non-resin-containing permanent restorations
Contraindications
• Use with patients who have a known hypersensitivity or severe allergic reaction to eugenol,
or any of the components.
• Direct application to dental pulp tissue (direct pulp capping).
• Base under resin-containing adhesives, restoratives or cements.
A powder/liquid version for hand mixing
Alternatively available as:
– IRM® Caps™ Intermediate Restorative Material for machine mixing
Powder: Zinc oxide; Poly-Methyl Methacrylate (PMMA) powder; Zinc Acetate; Pigment
Liquid: Eugenol; Acetic acid
Storage
Inadequate storage conditions may shorten the shelf life and may lead to malfunction of the
product.
• Store with original cap (not dropper cap) tightly closed in a well ventilated place at temperatures between 10-24°C/50-75°F.
• Allow material to reach room temperature prior to use.
• Do not store with or near materials containing (meth)acrylate resin components.
• Protect from moisture.
• Do not freeze.
• Do not use after expiration date
1 x Bole Powder (38g)
1 x Bole Liquid (14 ml)
Cavity preparation
1. Isolate the field of operation in preferred manner. Rubber dam is recommended.
2. Cavity preparation must provide for the mechanical retention of the product.
3. If caries is present, completely excavate using low-speed and/or hand instrumentation.
4. Place matrix and wedge where indicated.
5. Gently dry preparation with cotton pellet. Avoid desiccation.
Pulp protection
In deep cavities cover the dentin close to the pulp (less than 1mm) with a hard setting calcium
hydroxide liner (Dycal® Liner, see complete Directions for Use).
Dispensing IRM® Material
1. Before dispensing, fluff powder (tumble the powder bottle) to assure uniform bulk density of
contents. Fill measuring scoop to excess without packing; then
2. Level scoop with spatula. Dispense 1 level scoop of powder onto a clean, non-absorbent
mixing pad or glass slab. Larger restorations may require additional scoop(s).
3. Using the dropper cap, dispense one drop of liquid for each level scoop of powder. After
dispensing liquid, replace original cap immediately to prevent evaporation and subsequent
contamination.
NOTE: Premature setting of material. Keep powder and liquid separated until ready for
spatulation.
Mixing IRM® Material
1. Use a spatulation technique that quickly and thoroughly combines 50% of the dispensed
powder into all the dispensed liquid.
2. Bring the remaining powder into the mix in 2 or 3 increments and spatulate thoroughly. The
mix should be completed in approximately one (1) minute.
3. Technique Tips:
• A proper mix will appear quite stiff and should be stropped (wiped vigorously) for 5 to 10
seconds.
• A proper mix results in a working consistency that is smooth and adaptable. If a dry, stiff
or rubbery mix is obtained, additional liquid may be incorporated. If a sticky and soft mix
is obtained, more powder may be added. Slight increments of powder should be
incorporated until proper consistency is reached.
Placement of mixed IRM® Material
Mixed material may be carried to the preparation with suitable placement instrument. Adapt,
contour and shape with appropriate instruments. Technique tip: Dipping the instrument into
dry powder left on the pad before using to adapt material will facilitate placement and minimize
sticking.
1. Use as Intermediate Restorative Material
• Trim excess material. Material may be smoothed by lightly burnishing. Initial set occurs
approximately 5 minutes from start of mix. Increased temperature, humidity, and
powder/liquid ratio may accelerate set.
• Upon set, remove matrix band if present. Check and adjust occlusion as needed.
Additional carving or occlusal adjustment may be accomplished with a round bur. Avoid
gouging material with sharp burs at high speed. Additional polishing is not recommended.
• Periodically evaluate the intermediate restoration until final restoration is indicated. The
intermediate restoration should be removed and final restoration completed within 1 year of
placement.
2. Use as Protective Base
This product is a protective base for restorative material not containing polymeric resin
components (e.g. final restoration of amalgam, gold). NOTE: Possible interactions. The product should not be used in conjunction with resin-based adhesives, varnishes or restoratives since eugenol may interfere with hardening and cause softening of (meth)acrylate based dental materials.
• Apply mixed material to desired dentin surfaces and depth.
• Following completion of set (approximately 5 minutes from start of mix) cavity refinement
may be completed.
• Complete restoration per restorative material manufacturer’s directions for use.
Not applicable
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