Related Experiment Video
Updated: May 19, 2026

03:07
Scanning Electron Microscopic Evaluation of Surface Defects of Remover Retreatment File After Single and Multiple Uses
Published on: October 11, 2024
Comparison of debris extrusion during retreatment using two different File systems and two irrigation activation
Selen İnce Yusufoglu1, Beyza Turan Saglam1, Feyza Nur Ergüner1
1Department of Endodontics, Faculty of Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey.
Summary
The Reciproc file system with ultrasonic irrigation produced less apical debris extrusion during root canal retreatment. This finding suggests it is a safer option for minimizing periapical extrusion compared to other tested systems.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Root canal retreatment procedures aim to remove previous obturation materials.
- Apical extrusion of debris during retreatment is a clinical concern.
- Various instrumentation and activation techniques are used in retreatment.
Purpose of the Study:
- To quantify and compare the amount of apically extruded debris during root canal retreatment.
- To evaluate the influence of different file systems (OneShape, Reciproc) and irrigation activation methods (PUI, EasyDoActivator) on debris extrusion.
Main Methods:
- Sixty single-rooted teeth were obturated and then subjected to retreatment.
- Teeth were divided into four groups based on the retreatment system and activation method used.
- Apically extruded debris was collected and weighed for analysis.
Main Results:
- The OneShape system with ultrasonic irrigation generated significantly more debris extrusion (P=0.0001).
- The Reciproc system showed higher debris extrusion with sonic activation compared to ultrasonic activation (P=0.0001).
- The OneShape+EasyDoActivator group extruded significantly more debris than the Reciproc+PUI group (P=0.002).
Conclusions:
- The Reciproc file system combined with PUI resulted in the least apical debris extrusion.
- This combination appears to be a safer choice for minimizing periapical extrusion during root canal retreatment.
