The effect of immersion disinfection procedures on dimensional stability of two elastomeric impression materials

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Abstract

The aim of this study was to determinethe effect of immersion disinfection procedures on thedimensional stability of two elastomeric impressionmaterials. Impressions of a stainless steel die weremade with polyether (PE) and with additionpolymerizedsilicone rubber (PVS). The test specimensunderwent disinfection treatment by immersion in twocommercially available solutions containing quaternaryammonium compounds (Sterigum Powder, SP) andglutaraldehyde plus an amino derivative (MD520, MD),respectively. The impressions were measured at 4different time points: before any disinfection treatment(T0); after the first disinfection (T1); 6 hours after thefirst disinfection (T2); after the second disinfection,carried out 6 hours after the first one (T3). Impressionswhich were not disinfected served as controls. Whenboth impression materials were disinfected with SP,significant differences were detected among allmeasurements (P < 0.0001), with the exception of T2vs T3 (P > 0.05). On the other hand, when MD was used,significant differences were found when T0measurement was compared to T1, T2 and T3measurements (P = 0.0043 for PE, and P = 0.0014 forPVS). The dimensional change of allmaterial/disinfectant combinations was always ≤0.5%.Therefore, the effects of immersion disinfection on thedimension of elastomers in SP or MD are not clinicallyrelevant
Lingua originaleEnglish
pagine (da-a)441-446
Numero di pagine6
RivistaJournal of oral science
Volume50
Stato di pubblicazionePublished - 2008

All Science Journal Classification (ASJC) codes

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