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April 3, 2026Journal of Scientific Reports-AOpen Access

Evaluation of root dentin defect formation during retreatment procedure using various NiTi rotary retreatment files: an in vitro study

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HKHande KurşunSGSıtkı Selçuk GökyayTYTurgut Yağmur Yalçın

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Overview

In vitro study evaluates dentinal microcracks in extracted teeth using various NiTi retreatment systems, suggesting no significant differences in defect formation.

Key Points

  • This study aims to assess the formation of dentinal microcracks when using different NiTi rotary retreatment systems on extracted human teeth.
  • Selected 125 extracted human mandibular premolars for evaluation.
  • Prepared 100 teeth with ProTaper Next NiTi rotary system and left 25 as controls.
  • Used three retreatment systems: ProTaper Universal Retreatment, R-Endo, and XP-endo Rise.
  • Examined roots under a stereomicroscope to detect dentinal cracks after retreatment procedures.
  • Applied statistical analyses using Chi-square and McNemar tests.
  • No significant differences in dentinal defect scores among retreatment systems and control groups.
  • Most specimens showed no defects, with only a few exhibiting higher defect scores.
  • Negative control demonstrated intact dentin, while positive control showed minimal defects.
  • No retreatment instruments significantly increased dentinal defect incidence; XP-endo Rise showed a nonsignificant trend toward fewer defects.

Cite This Study

Kurşun et al. (2026) studied this question.

synapsesocial.com/papers/69cf5f305a333a821460e2a8https://doi.org/10.59313/jsr-a.1862681
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