AGATOS W

Zinc phosphate cement, slow-setting

Composition

The product meets the requirements of EN ISO 9917-1

AGATOS W slow-setting zinc phosphate cement is a preparation consisting of a powder and a liquid contained in a common packaging unit. The main component of the powder is zinc oxide, and the main component of the liquid is orthophosphoric acid, which when mixed together in appropriate proportions form basic zinc phosphate.

Application

AGATOS W is primarily intended for the cementation of crowns, bridges and post and core buildups, as well as a material for temporary filling of cavities in deciduous teeth. In the case of deep caries, it is recommended to place a base between the cement and the dentine (a preparation based on calcium hydroxide).

It can also be used for filling root canals, particularly in the case of preparation of a tooth for root apex resection. The cement provides a tight closure of the apical foramen of the tooth.

Working Procedure

The cement should be mixed on a matt glass plate surface with a spatula of stainless steel or chromium-plated steel. The instruments must be perfectly clean and dry. The powder should be introduced into the liquid in small portions (never the reverse), carefully mixing and trituration to a paste consistency. During mixing of the cement and during setting in the cavity, heat may be generated; this is a normal phenomenon resulting from the chemical reaction responsible for cement setting. To ensure that the cement maintains the appropriate quality, the following working conditions with the cement must be observed:

• powder and liquid are mixed in the ratio 1.30 g powder/0.83 g liquid; compliance with these proportions is very important for obtaining appropriate cement parameters, and also due to the possibility of irritation of tooth tissue by cement mixed with too much liquid. In practice, the recommended proportion corresponds to two powder scoops to twelve drops of liquid,
• recommended working temperature with cement 23°C, humidity 50%,
• immediately after taking a portion of powder and liquid, the containers with the powder and liquid must be tightly reclosed.

Mixing time: approx. 1 min.

Working time: max. 1.5 min.

Setting time (net): 6-8 min.

Description of Action

AGATOS W mixes very well, after setting it exhibits high compressive strength and resistance to the eroding action of water, saliva and compounds found in foods. It is characterized by a longer setting time and low shrinkage, as well as good adhesion and relative harmlessness to surrounding tissues. The compressive strength of set cement is min. 50 MPa.

Storage Conditions

Store in containers tightly closed, protected from moisture. Do not store at temperatures below 8°C, as this may cause crystallization of the liquid. Store in a place inaccessible to children.

After the first opening of the powder and liquid containers, particular care should be taken to tightly close the containers after removing further portions of material, in order not to impair the quality parameters of the product.

Store at temperatures between 8°C and 25°C.

Any serious incident related to the product should be reported to the manufacturer and the competent authority (President of the Office for Registration of Medicinal Products, Medical Devices and Biocidal Products).