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Apically Extruded Debris in Curved Root Canals Using a New Reciprocating Single-File Shaping System
Naji Kharouf1, Eugenio Pedullà2, Walid Nehme3
1Department of Bioengineering and Biomaterials, INSERM (French National Institute of Health and Medical Research) 1121, Strasbourg University, Strasbourg, France; Department of Endodontics, Faculty of Dental Medicine, Strasbourg University, Strasbourg, France.
This study found that larger irrigation volumes and specific file systems (One Reci, One Curve) significantly reduced apical debris extrusion (AED) during root canal shaping. Instrument design appears crucial in minimizing debris.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Apical debris extrusion (AED) is a concern during root canal preparation.
- Understanding factors influencing AED is crucial for minimizing procedural complications.
Purpose of the Study:
- To evaluate the impact of five distinct shaping file systems on apical debris extrusion.
- To assess the effect of two different irrigation volumes on apical debris extrusion.
Main Methods:
- 150 mandibular molars were divided into groups using One Reci, WaveOne Gold Primary, ProTaper Next (reciprocating), and One Curve, ProTaper Next (continuous rotation).
- Irrigation was performed with either 10 mL or 5 mL of distilled water.
Main Results:
- Increased irrigation volume (10 mL vs. 5 mL) significantly reduced apical debris extrusion (P < .05).
- The One Reci and One Curve file systems demonstrated statistically lower apical debris extrusion compared to other systems.
Conclusions:
- The cross-sectional design of endodontic instruments may be a primary factor influencing apical debris extrusion.
- The volume of irrigant used during root canal shaping can impact the amount of debris extruded apically.
