Comparative Evaluation Of Amount Of Apically Extruded Debris In Endodontic Retreatment Procedures Using Four Different File Systems- An Invitro Study

Objective(s): To compare the amount of apical debris extruded during endodontic retreatment procedures performed using H files, R-Endo Retreatment GPR files and ProTaper Universal files.
 Materials Methods: The conventional coronal access cavity was prepared for 40 extracted Mandibular Premolars. root canals were with Next Rotary till X1. Obturation done by combination Lateral Vertical Compaction technique. All samples later attached to Eppendorf tubes. then divided into four groups each containing 10 on basis different be used. After complete removal canal filling material, material remnants adhered collected in preattached For final weight computation comparison, empty tube deducted from accommodating debris. ANOVA Tukey test applied statistical analysis.
 Results: showed minimum extrusion than all other examined study. R Endo min max -0.045 0.009. However, there no statistically significant difference system (p>0.005).
 Conclusion(s): There between Also rotary lesser Hedstrom hand files. less apically this study.
 Keywords: Apical debris; Gutta-percha;