The impact of alginate impression disinfection time on the stability of plaster model linear dimensions
Journal Title: Prosthodontics - Year 2016, Vol 66, Issue 1
Abstract
Introduction. The presence of blood and saliva in dental impressions can induce cross infections. Therefore, it is recommended to apply disinfection before further stages of the laboratory procedure. The most commonly used agents include aqueous solutions of sodium hypochlorite, glutaraldehyde, iodine or peroxide compounds. Impressions made with use of hydrocolloid alginate materials easily absorb aqueous solutions.Aim of the study. To assess and compare the effects of disinfection time of two alginate impression materials on the stability of linear dimensions of plaster models.Material and methods. Alginates, Kromopan and Tropicalgin, were used to produce 20 impressions of each of the masses. They were divided into 4 equal groups. Three groups of each of the masses were subjected to a disinfectant, a 2% Perform, for 10, 20 or 30 min, respectively. The control group impressions (5 impressions of each mass) were not disinfected. Immediately after disinfection plaster models were cast to perform measurements between specified points.Results. The study did not show dimensional changes in the control group of impressions made of both masses, Tropicalgin and Kromopan, during a 10 min disinfection. Extended time used to disinfect impressions up to 20 and 30 min changed the dimension of linear models for both masses as compared to the control group, however, Tropicalgin exhibited a greater change.Conclusion. Disinfection of alginate impressions is an indispensable procedure in rehabilitation and reconstruction procedures. It also minimizes the risk of infection transmission. Impression disinfections performed properly, in line with the recommendations of producers, do not affect the stability of model linear dimensions.
Authors and Affiliations
Aneta Kamińska, Agnieszka Zwolak, Leszek Szalewski, Dorota Wójcik, Katarzyna Sarna-Boś, Janusz Borowicz
Keywords
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