The Precision of Propex Pixi with Different Instruments and Coronal Preflaring Procedures

Abstract

Objective: This study aimed to evaluate the influence of the instrument regarding the apical fit and type ofthe alloy and coronal preflaring procedures in the accuracy of Propex Pixi.Methods: A total of 40 extracted human single-rooted permanent teeth with apical diameters of 200 µmwere selected. A #10 K-file was inserted in the root canal until its end could be observed by a dental microscope to obtain the actual working length (WL). Electronic measurements were performed using Propex Pixito the root apex (“0.0”). Different file alloys (stainless steel [SS] and nickel titanium [NiTi]) and sizes (#10, #15,and #20) were used before and after coronal flaring. Statistical analysis was performed by a factorial analysisof variance (P≤0.05).Results: Results showed that the measurements of electronic length (EL) were closer to the actual workinglength (WL) after coronal flaring (P