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  • Title: 3D evaluation of the effect of disinfectants on dimensional accuracy and stability of two elastomeric impression materials.
    Author: Soganci G, Cinar D, Caglar A, Yagiz A.
    Journal: Dent Mater J; 2018 Jul 29; 37(4):675-684. PubMed ID: 29848853.
    Abstract:
    The aim of this study was to determine and compare the dimensional changes of polyether and vinyl polyether siloxane impression materials under immersion disinfection with two different disinfectants in three time periods. Impressions were obtained from an edentulous master model. Sodium hypochlorite (5.25%) and glutaraldehyde (2%) were used for disinfection and measurements were done 30 min later after making impression before disinfection, after required disinfection period (10 min), and after 24 h storage at room temperature. Impressions were scanned using 3D scanner with 10 microns accuracy and 3D software was used to evaluate the dimensional changes with superimpositioning. Positive and negative deviations were calculated and compared with master model. There was no significant difference between two elastomeric impression materials (p>0.05). It was concluded that dimensional accuracy and stability of two impression materials were excellent and similar.
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