Apical Debris Extrusion of Two Heat Treated Rotary NiTi Instruments; AF F-One Files and Orodeka Plex-V Files in Severe Curved Simulated Canals. A Comparative In Vitro Study

Objective: the extrusion of apical debris is considered as the prime reasons of endodontic flare up. The aim of this paper was to calculate the weight of this debris after preparation of curved resin canals using two different endodontic rotary systems: Fanta AF F-One and Orodeka Plex-V files. Materials and methods: twenty curved simulated resin canals were divided into two sets (n=10) rendering to the files applied for canal instrumentation. All samples were prepared with apical file of 25/04. The debris was to be collected in pre-weighed vials then incubated at 37°C for two weeks. Then the vials were re weighing and the quantity of debris of each canal was collected from subtracting the amount of pre-weight from post-weight of the vial. t-test was utilized to compare the mean weight of the extrusion to assess the significant difference between the examined groups. Level of significance was 0.05. Results: there was no significant difference between the tested groups in term of apically extruded debris (P=0.724). Plex-V system showed more percent of extrusion than AF F-One system. Conclusions: the two tested systems extruded debris without significant difference. List of Abbreviations: Nickle-titanium (NiTi), Apical Extruded Debris (AED), Root canal treatment (RCT), Working length (WL), rotation per minute (rpm), Newton (N), Statistical Package for Social Sciences (SPSS), Probability value (P). Significant (Sig), That is to say (i.e.,).