The effect of chloroform, orange oil and eucalyptol on root canal transportation in endodontic retreatment

Aust Endod J. 2016 Apr;42(1):37-40. doi: 10.1111/aej.12126. Epub 2015 Sep 29.


The purpose of the present study was to assess the effect of solvents on root canal transportation in endodontic retreatment. Sixty extracted human permanent mandibular first molars with curved root canals were selected. All of the root canals were prepared using Twisted File Adaptive instruments (SybronEndo, Orange, CA, USA) and filled with gutta-percha and AH Plus sealer (Dentsply DeTrey, Konstanz, Germany) using the cold lateral compaction technique. The teeth were assigned to four retreatment groups as follows (n = 15): eucalyptol, chloroform, orange oil and control. The canals were scanned using cone-beam computed tomography scanning before and after instrumentation. The chloroform group showed a significantly higher mean transportation value than the orange oil and control groups at the 3 and 5 mm levels (P = 0.011 and P = 0.003, respectively). There was no significant difference among the orange oil, eucalyptol and control groups in terms of canal transportation (P > 0.61). The chloroform led to more canal transportation than the eucalyptol and orange oil during endodontic retreatment.

Keywords: retreatment; solvents; transportation.

MeSH terms

  • Chloroform*
  • Dental Pulp Cavity
  • Gutta-Percha*
  • Humans
  • Retreatment
  • Root Canal Filling Materials
  • Root Canal Preparation*
  • Transportation


  • Root Canal Filling Materials
  • Chloroform
  • Gutta-Percha