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Related Experiment Video

Updated: Jul 8, 2026

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Comparison of Shaping Ability and Apical Debris Extrusion Using 4 Different Nickel-Titanium Single-File Systems.

Siyu Li1,2,3, Mengzhen Tang1,2,3, Xi Wang1,2,3

  • 1Department of Cariology and Endodontics, The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, China.

International Journal of Biomaterials
|July 14, 2025
PubMed
Summary
This summary is machine-generated.

The S-ONE nickel-titanium (Ni-Ti) single-file system showed superior centering ability in simulated curved canals. In contrast, the One Plex system resulted in more apical debris extrusion and canal transportation.

Keywords:
Ni–Ti instrumentationapical debris extrusioncentering abilitysimulated root canalssingle-file system

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Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Nickel-titanium (Ni-Ti) single-file systems are widely used in endodontic treatment.
  • Evaluating their shaping ability and potential for debris extrusion is crucial for clinical success.

Purpose of the Study:

  • To compare the shaping ability and apical debris extrusion of four Ni-Ti single-file systems in simulated curved root canals.
  • To assess the centering ability and canal transportation of Reciproc Blue (RCB), V-Blue, One Plex, and S-ONE systems.

Main Methods:

  • Forty simulated curved root canals in resin blocks were instrumented with four Ni-Ti single-file systems (n=10 per group).
  • Shaping ability was evaluated by measuring resin removal and calculating the centering ratio.
  • Apical debris extrusion was quantified during root preparation.

Main Results:

  • S-ONE exhibited the best centering ability.
  • One Plex showed significantly greater apical debris extrusion and canal transportation at the apex.
  • Reciproc Blue (RCB) demonstrated excessive removal of the inner canal wall at Levels 6-8.

Conclusions:

  • S-ONE is recommended for its superior centering ability in curved canals.
  • Clinicians should be cautious with the One Plex system due to increased debris extrusion and transportation.
  • Further research is needed to optimize Ni-Ti single-file systems for complex root canal anatomies.