Zinc Oxide Eugenol

Zinc oxide eugenol (ZOE) is a dental material formed by mixing zinc oxide powder with eugenol oil to produce a paste that sets to a soft or firm consistency depending on the formulation. It is commonly used as a temporary cement, provisional filling, and as a medicated dressing in root canal procedures because it seals the tooth and releases eugenol, which has mild analgesic and antibacterial effects that can help reduce sensitivity.

Dentists often choose Zinc Oxide Eugenol for short-term restorations and as a base or liner under certain restorations, but it is generally avoided beneath resin-based permanent fillings because eugenol can interfere with resin bonding. Some patients may be allergic or sensitive to eugenol, so its use and duration are tailored to the treatment needs and individual medical history.