Improved water absorption behaviour of experimental hydrophilic vinyl polysiloxane (VPS) impression materials incorporating a crosslinking agent and a novel surfactant

To study the effects of incorporating a further crosslinking agent and novel surfactant on water absorption behaviour experimental VPS impression materials. Part 1: The uptake Aquasil-Ultra-Monophase (AqM) was studied gravimetrically in three media (DW, 1%NaOCl Perform ID), at 23 °C 37 °C, over period one four-months (n = 5) to gain information long-term immersion. 2: Five materials were formulated: Exp-I II as hydrophobic Exp-III-V hydrophilic, containing an additional cross-linking (TFDMSOS) Rhodasurf CET-2 surfactant. Their desorption (both °C) properties (gravemetrically), solubility, pH diffusion coefficient (DC) data compared with commercial, hydrophilic materials, seven days 5). results analysed statistically. Significant differences absorbed by AqM observed °C. Aq M had significantly higher 2% ID, than DW NaOCl. At profiles more enhanced differed. All Exp commercial increased weight both (DW 1% NaOCl °C), differing non-reached equilibrium. Exp-VPS less commercial-VPS. Desorption all from parts faster absorption, followed Fickian kinetics reached equilibrium within 1–3 days. DCs for (10−10 versus 10−11 m2 s−1). solubility DW. after immersion samples incorporation agent, TFDMSOS non-ionic surfactant, CET-2, (ethoxylated-cetyl-oleyl alcohol) improved dimensional stability These merit research producing accurate casts patient’s anatomy following disinfection.