# Zinc Oxide-Eugenol Cement Directions

 

1. General Use:

- Primarily for temporary dental restorations of Class III, IV, and limited Class I cavities.

- Suitable for fillings in deciduous teeth of Class II.

 

2. Procedure:

- Use a clean, dry glass mixing slab at room temperature (22–24°C) and humidity of 50±10%.

- Ensure the spatula is non-corrosive, free from dust, set cement, and moisture.

 

Powder and Liquid Ratio:

- For cement: 1.5 g powder : 0.5 ml liquid.

- For base: 1.8 g powder : 0.5 ml liquid.

 

Mixing Technique:

- Divide the measured powder into three portions: 1/4, 2/4, and 1/4.

- Incorporate 1/4 of the powder into the liquid and mix.

- Add 2/4 of the powder and mix further.

- Finally, add the remaining 1/4 of the powder.

- Total mixing time should not exceed 90 seconds.

 

3. Specifications:

- Mixing time: 1.5 minutes.

- Solidifying time: 3–10 minutes.

- Resistance (24 hours after mixing): ≥25 MPa.

- Corrosion in water: ≤1.5%.

- Arsenic content: ≤2 mg/kg.

 

4. Packing Standard:

- Powder: 10 g per bottle (<2).

- Liquid: 6 ml per bottle (>1).

 

5. Shelf Life: 3 years.