Comparative Evaluation of Apical Debris Extrusion during Root Canal Preparation using Three Different Rotary File Systems: A Study Protocol

Background: Apical extrusion of debris leads to postoperative inflammation and endodontic failure.

Objectives: To comparatively evaluate debris extrusion by using Trunatomy rotary files, 2 shape, ProTaper next rotary files.

Methodology: Sixty Extracted single rooted human premolar teeth will be included in the study. After access opening, canal patency will be established by 15 K-file till the apical foramen followed by determination of working length by visual method. Now the samples will be divided into 3 groups: Group1: Trunatomy, Group 2: 2 shape file, Group 3: ProTaper Next files. Following this the manufacturer's instructions will be followed for the instrumentation. During instrumentation, extruded debris and irrigants will be collected into the preweighed test tubes. Following this, these tubes will be stored in an incubator at the temperature of 70°C for next 5 days. To evaluate the resultant weight of extruded debris, these test tubes will be weighed.

Expected Results: Trunatomy rotary file system is expected to produce less debris than 2 shape, ProTaper Next file system.

Conclusion: This study would be helpful for clinicians to choose better and efficient file system for instrumentation which produce comparatively less debris extrusion further reducing the chances of endodontic flareup.