What is zinc oxide and eugenol used for?

Zinc oxide/eugenol cements are mixtures of zinc oxide (powder) and eugenol (liquid). They are mainly used as a lining or base under amalgam restorations and as temporary luting cements or filling materials.

Is zinc oxide-eugenol safe?

It is considered non-carcinogenic and non-mutagenic and is generally recognised as safe by the Food and Drug Administration. On the other hand, there are many studies about the cytotoxicity of eugenol.

How long can you leave IRM in?

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.

Is Zoe the same as IRM?

DSI Zoer cement has a non-irritating procedure that suits the dental restoration resolutions in wide-ranging varieties. But before all, it is certainly an intermediate restorative material (IRM).

How does eugenol reduce pain?

Eugenol inhibits N-methyl-d-aspartate (NMDA) receptors which are involved in pain sensitivity (Aoshima and Hamamoto, 1999 ▶). Eugenol is similar in chemical structure to capsaicin and therefore its effect on a vanilloid receptor should not be ignored (Yang et al., 2003 ▶).

Is eugenol toxic to pulp?

Very low concentrations of eugenol produce high toxicity in human dental pulp fibroblasts. Conclusions: All of the concentrations of eugenol that we evaluated produced high toxicity in human dental pulp fibroblasts of primary teeth.

Can eugenol make you sick?

If swallowed in large quantities, clove oil can cause severe symptoms, including: Abdominal pain. Coughing up blood. Diarrhea.

How long does zinc oxide eugenol last?

This filling often lasts about six to eight weeks, especially if the reason of the filling is about the root canal. Please note that failure to return to the dentist can lead to permanent destruction of the tooth resulting in a decaying, gum infection, and a potential tooth loss.

Is zinc oxide eugenol same as IRM?

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.

Is IRM a sedative filling?

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.

What is the advantage of zinc oxide eugenol over zinc phosphate as a cement base What is the purpose of a cement base?

Zinc oxide-eugenol cements are considerably better tolerated by tissue than other dental materials. As they alleviate pain and are bacteriostatic and antiseptic, they are well tolerated by patients. The cements are good insulators and possess better sealing properties than zinc phosphate cements.

Is eugenol toxic?

Eugenol is useful for treatment of skin infections, skin lesions and inflammatory disorders. However, some reports show that higher concentrations of undiluted clove oil may result in some symptoms. Indeed, an excessive dose of eugenol was considered as toxic.

What is the active ingredient in zinc oxide eugenol cement?

In the zinc oxide eugenol cement the powder contains Zinc oxide which is the main active ingredient, another ingredient in the powder is zinc acetate which acts as an accelerator during a setting reaction. In the liquid eugenol is the main active ingredient. Olive oil is present in smaller quantities to control the viscosity of the liquid.

What is the difference between reinforced and unreinforced zinc oxide eugenol?

1. Unreinforced Zinc Oxide Eugenol products are still on the market, but they should only be used when strength and solubility are not critical. Such Zinc Oxide Eugenol formulations for temporary cements are popular and perform adequately. 2. Reinforced Zinc Oxide Eugenol products are stronger and less soluble than unreinforced products.

What is the setting reaction of eugenol gel?

The setting reaction is between zinc oxide and the eugenol that are the two main ingredients of this dental cement. Initially, during the setting reaction, there is the hydrolysis of a zinc oxide powder to zinc hydroxide. The zinc hydroxide than react with the eugenol to form eugenol gel that solidifies in 6 to 10 minutes.

What is the hydrolysis of eugenol cements?

Its hydrolysis forms eugenol and zinc hydroxide, releasing the zinc oxide particles exposed in the process. In vitro studies showed that zinc 2-ethoxybenzoate matrix formd in EBA-eugenol cements is even more prone to hydrolysis than the zinc eugenolate.