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Comparative Evaluation of Apically Extruded Debris During Root Canal Preparation Using Three Different File Systems
Summary
Root canal cleaning with sodium hypochlorite and single-file systems like Reciproc caused more debris extrusion. This may increase the risk of postoperative pain during chemomechanical cleaning.
Area of Science:
- Endodontics
- Dental materials science
Background:
- Chemomechanical cleaning is crucial for root canal disinfection.
- Manual and rotary files are used for instrumentation.
- Apical extrusion of debris is a concern during root canal procedures.
Purpose of the Study:
- To compare the apical extrusion of intracanal debris using ProTaper, Reciproc, and HyFlex rotary file systems.
- To evaluate the influence of 2.5% sodium hypochlorite and 2% chlorhexidine (CHX) as irrigating solutions on debris extrusion.
Main Methods:
- 165 single-canal mandibular premolars were used.
- Teeth were divided into 6 experimental groups (N=25) using 3 file systems and 2 irrigating solutions.
- Apical debris extrusion was quantified by weighing Eppendorf tubes before and after instrumentation.
Main Results:
- Sodium hypochlorite irrigation resulted in significantly higher debris extrusion compared to other solutions (p<0.001).
- The Reciproc file system showed significantly higher debris extrusion than ProTaper and HyFlex (p<0.001).
- Higher debris extrusion was associated with sodium hypochlorite, single-file systems, and reciprocal motion.
Conclusions:
- The use of sodium hypochlorite solution and single-file systems, particularly with reciprocal motion, is linked to increased apical debris extrusion.
- This increased extrusion may elevate the risk of postoperative pain in endodontic treatments.
