Efeito da desinfeccao por aerossois sobre a capacidade de umedecimento de moldes de polieter por gesso tipo IV

Impressions carried out in the dental office are potential contamination pathways. The aim of this paper was to evaluate the effects of spray disinfection on the wetting of polyether material (Impregum F) by stones. Three kinds of stones (Herostone, Durone and Polirock) and two disinfectant solutions (2% glutaraldehyde and 1% hypochlorite) were used. The impressions were submitted to spray disinfection, and the contact angles between them and their respective casts were measured. The smaller the angle, the better the adaptation of the stone to the polyether material. No adverse effects were observed with the two disinfectant solutions. Durone presented the best results.