What does IRM mean dental?
Zinc oxide-eugenol cement (IRM) is a low-strength base used as a temporary cement filling in the event that the patient will return at a later date for a semi-permanent restoration. The powder is mainly zinc oxide and the liquid is eugenol with olive oil as a plasticizer.
What is IRM material?
Intermediate restorative material – IRM. IRM restorative 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.
What is eugenol used for?
It has sedative and anodyne effects5 as well as antibacterial properties. Eugenol is found as a major ingredient in a variety of dental materials such as impression materials, filling materials, dental cements, endodontic sealers, periodontal dressing materials and dry socket dressings.
How do you use dental IRM?
IRM® Material should be mixed in equal proportions (1 level scoop powder to 1 drop liquid, 6:1 by weight) for optimum performance. The mixed material should be homogeneous and streak free prior to application. Variations may affect the strength and durability of the material.
How long can an IRM restoration last?
IRM® is a reinforced zinc oxide-eugenol composition for intermediate restorations lasting up to one year. It can also be used as a base under non-resin restorations. IRM® is contraindicated for use with patients who have a known hypersensitivity to eugenol or acrylate resins.
What is the difference between IRM and Cavit?
IRM has a coefficient of linear expansion only half that of Cavit, but a compressive strength nearly doubling Cavit (9). Thus, while it may leak more due to shrinkage on set- ting, its increased strength may cause clinicians to favor its use in areas of high occlusal stress (5).
Why do we use IRM?
If you have a rather large cavity, you can remove the bulk of the decay and place an “IRM” filling (Intermediate Restorative), also known as a sedative filling. This will often slow or stop the progression of decay and help the patient feel better.
Is clove bad for your liver?
Cloves may also promote better liver function. Some trials have shown that the eugenol found in cloves can help reduce signs of liver cirrhosis and fatty liver disease. It may also improve general liver function.
Is clove harmful for liver?
Eugenol is toxic in high amounts and overdosing on clove oil may cause liver damage, especially in children.
How long can a restoration of IRM last?
Is IRM same as Zoe?
IRM is an intermediate restorative material, composed of polymer reinforcement zinc oxide-eugenol (ZOE). ZOE B cement is zinc oxide-eugenol base with polymer reinforcement used for bases and temporary restorations.
Is Cavit an IRM?
IRM is polymer-reinforced (20% polymethyl-methacrylate) zinc oxide powder mixed with IRM liquid (eugenol and 1% acetic acid) in the operatory. IRM has a coefficient of linear expansion only half that of Cavit, but a compressive strength nearly doubling Cavit (9).
Why does IRM need to be cleaned before cementation?
Because IRM contains eugenol, if a resin cement will be used for permanent cementation the preparation needs to be cleaned thoroughly to prevent the eugenol from interfering with the cement’s adhesion.
What do you need to know about provisional cements?
Also referred to as temporary cements, these materials must provide the strength required to keep the temporary in place while also being simple to remove, and easy to clean-up. A number of different formulations are used for temporary cementation, and they can feature eugenol or be eugenol-free.
When to use durelon as a provisional cement?
Durelon typically is used as a permanent cement, but when the liquid-to-powder ratio is altered in favor of a greater amount of liquid it can be used as a provisional cement.
When to use provisional cement for dental restoration?
Provisional Cements. A number of different formulations are used for temporary cementation, and they can feature eugenol or be eugenol-free. When choosing a cement, it’s important to make sure it can meet the requirements of the restoration being placed and hold for as long as the temporary will be needed by the patient.