Abstract
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.
Highlights
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
The success of endodontics is based on thorough debridement, disinfection, and obturation in three dimension
A complete root canal debridement by instrumentation and irrigants is the critical step in endodontic management [1]
Summary
The success of endodontics is based on thorough debridement, disinfection, and obturation in three dimension. During the root canal instrumentation dentine chips, necrotic tissue, microbes, intracanal irrigants, pulp tissue fragments may extrude from apical foramen leading to the pain or flare-up [2]. Irrespective of various techniques with the instruments used, biomechanical preparation of canal leads to extrusion of the debris into periradicular tissues even while maintaining canal preparation short of apical terminus [5]. This leads to extrusion causing induction of pain and/or edema because of the inflammatory response. Objectives: To comparatively evaluate debris extrusion by using Trunatomy rotary files, 2 shape, ProTaper rotary files. Expected Results: Trunatomy rotary file system is expected to produce less debris than 2 shape, ProTaper file system
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