Quantification of Apical Extrusion of Debris Using Five Different Retreatment Files, With and Without Solvent: An In-Vitro Study

Abstract

Introduction: The objective of this study was to evaluate the efficacy of five different Retreatment files with and without gutta percha (GP) solvent, by quantifying the apical extrusion of endodontic debris during retreatment procedure.

Methods: 45 extracted human mandibular premolars were collected and prepared by performing root canal treatment and stored at 37 ⁰C at 100% moisture were fixed inside the eppendorf tube to suspend the roots within the tubes. Samples were divided into nine groups, from Group 1 using H files with xylene as control and groups. Group 2 to 5 with subgroups   a & b, with and without solvent using ProTaper, Mtwo group,D-Race group and R-ENDO system respectively. The samples were weighed before and after retreatment to determine the weight of apical extrusion of debris using analytical weighing balance. The results were statistically analysed and tabulated. (p<0.05).

Results: Debris extrusion was significantly higher in group 5b (R-ENDO Retreatment file system without the use of solvent) ie. 0.47±0.447mgs.  All the other test groups extruded some amount of debris apically with the range from 0.11±0.003 to 0.15±0.065 mgs. with no statistical significant difference among them.

Conclusion: All the experimental retreatment file systems extruded some amount debris through apical foramen with no significant difference with file systems tested when used with or without the solvent and R-ENDO retreatment file with solvent. But R-ENDO rotary file when used with solvent, extruded least amount of debris among the experimental retreatment files, when used without the solvent.