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Apical transportation using Mtwo or Reciproc retreatment systems in severely curved canals: a micro-computed tomographic study. | LitMetric

AI Article Synopsis

  • The study aimed to evaluate apical root canal transportation during the retreatment of severely curved canals using two different systems: Mtwo and Reciproc.
  • Forty mesial canals from mandibular molars were analyzed using micro-computed tomography before and after retreatment, focusing on four key measurements of canal changes.
  • Results showed that both systems resulted in similar levels of vertical and horizontal transportation, indicating that both Mtwo and Reciproc are safe options for retreatment of curved canals.

Article Abstract

Objective: To assess apical root canal transportation using Mtwo or Reciproc during retreatment of severely curved canals, using a multi-analytical approach.

Methods: Forty mesial canals from mandibular molars (Vertucci type IV) were evaluated before and after endodontic retreatment to compare apical transportation with Mtwo retreatment or Reciproc. The systems were used on the same root but alternating the mesial canals. The analyses were performed by micro-computed tomography. Four evaluations were performed: (a) longitudinal transportation, (b) horizontal transportation, (c) variation in the angle of curvature of the canal, and (d) canal-root width ratio. Horizontal transportation and canal-root width ratio were evaluated in 1-, 3-, and 5-mm levels.

Results: Longitudinal transportation occurred in all samples, with a mean of 0.13 mm for Mtwo and 0.17 mm for Reciproc. Horizontal transportation increased as distant from the apex was the evaluated level, in mean. However, the transport was not observed in all samples. The mean angle of curvature was 4.16 for Mtwo and 3.03 for Reciproc. Canal-root width decreased as distant from the apex was the evaluated level. No significant differences were observed considering all tested variables, independently of the retreatment system or evaluated level (p > 0.05).

Conclusion: Mtwo retreatment and Reciproc presented similar apical transportation (horizontal or vertical).

Clinical Relevance: Both Mtwo retreatment and Reciproc systems could be considered safe regarding apical transportation.

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Source
http://dx.doi.org/10.1007/s00784-022-04751-zDOI Listing

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