[The effect of levels of alkali salts in Alginate-LF-250 on physico-mechanical properties of materials used in making impressions based on irreversible colloids].
The aim of this paper is the examination of physical-mechanical properties of alginate composition regarding the change of alkali salt alginate composition in the limits of the presence from 8 to 20%, and after the standard ISO 1563, 1978 (E). The combinations make homogenized mixtures of micronized powders of the basic component, retarders, accelerators, system stabilizators, the means for colloides and constituents lowering, which are prepared in the relation of 16 gr/40ml. The change of alkali salt alginate concentration from 8 to 20% does not effect the working time and the time of alginate mash binding, while percentage of permanent deformation of the binding material is larger than the allowed standard after ISO 1563, 1978 (E) in case when alginate alkali salts in the composition are present in the smaller quantity than 12%.
Beganović
M
M
Klinika za stomatolosku protetiku, Stomatoloski fakultet Sarajevo.
D000464:Alginates / Q000737:chemistry*; D003760:Dental Impression Materials / Q000737:chemistry*; D020723:Glucuronic Acid; D006603:Hexuronic Acids
D000464:Alginates; D003760:Dental Impression Materials; D006603:Hexuronic Acids; D020723:Glucuronic Acid
Uticaj koncentracije alkalijske soli Alginata LF-250 na fizicko-mehanicka svojstva materijala za uzimanje otisaka na bazi virevezibilnih koloida.