EVALUATION OF SURFACE QUALITY AND DIMENSIONAL ACCURACY OF ELASTOMERIC IMPRESSION MATERIALS AFTER VARIOUS DISINFECTION PROTOCOLS

Abstract

To evaluate surface quality and dimensional accuracy of elastomeric impression materials after various disinfection protocols. A Total of 150 samples were made i.e..50 from each type of impression material. Specimens were immersed in disinfectant solutions namely 0.2% chlorhexidine,5.25% hypo,0.2% povidone iodine, running tap water and ozone water for disinfection and examined for surface quality using stereomicroscope and dimensional accuracy using digital Vernier calipers. Silicones exhibited best dimensional accuracy & surface quality when treated with ozone water after 24 hours of disinfection whereas polyether exhibited good surface quality & dimensional accuracy when treated with control (tap water) after 24 hours of disinfection.