The Journal of Contemporary Dental Practice

Register      Login



Volume / Issue

Online First

Related articles

VOLUME 20 , ISSUE 11 ( November, 2019 ) > List of Articles


Evaluation of Efficacy of Different Instrumentation for Removal of Gutta-percha and Sealers in Endodontic Retreatment: An In Vitro Study

Pratik Agrawal, Sujith Sivarajan, Adarsh Jayan, Kenchappanavar M Sangeetha

Keywords : Endodontic retreatment, Gutta-percha, Sealers, Stereomicroscope

Citation Information : Agrawal P, Sivarajan S, Jayan A, Sangeetha KM. Evaluation of Efficacy of Different Instrumentation for Removal of Gutta-percha and Sealers in Endodontic Retreatment: An In Vitro Study. J Contemp Dent Pract 2019; 20 (11):1269-1273.

DOI: 10.5005/jp-journals-10024-2670

License: CC BY-NC 4.0

Published Online: 01-10-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Aim: The aim of the present study was to evaluate the efficacy of different instrumentation for removal of gutta-percha and sealers in endodontic retreatment. Materials and methods: A total of single-rooted mandibular premolars were collected. Access opening was performed in all specimens. The working length was determined by reducing 1 mm from the length of instruments that were seen reaching the apex. All the canals were dried with paper points. Lateral condensation technique was used to obturate the canals with gutta-percha and zinc oxide eugenol was used as a sealer. The specimens were randomly segregated into three experimental groups. Group I: ultrasonic retreatment tip, group II: R-Endo retreatment files, group III: Mtwo retreatment files. Roots were grooved into two halves with a diamond disc in a longitudinal, buccolingual direction. A stereomicroscope with ×40 magnification was used to image the quantity of gutta-percha and sealer on canal walls. Results: With ultrasonic retreatment tip, least amount (1.96 ± 0.32) of gutta-percha and sealer remained, followed by Mtwo retreatment files (2.84 ± 0.24) and R-Endo retreatment files (3.18 ± 0.63). A statistically significant inter-group difference among different instrumentation groups was demonstrated by ANCOVA analysis. Conclusion: In the present study, ultrasonic retreatment tip file systems was found to be more effective in the removal of root canal filling material, followed subsequently by Mtwo retreatment file system and R-Endo retreatment file system. Clinical significance: Thorough removal of filling material from the root canals is essential during root canal retreatment for probable cleaning and shaping of canal morphology. Thus, clinicians should be aware of the suitable and better instrumentation system that provides a clean and sterile root canal system without any debris.

  1. Joseph M, Ahlawat J, et al. In vitro evaluation of efficacy of different rotary instrument systems for gutta percha removal during root canal retreatment. J Clin Exp Dent 2016;8(4):e355–e360. DOI: 10.4317/jced.52488.
  2. Saad AY, Al-Hadlaq SM, et al. Efficacy of two rotary NiTi instruments in the removal of gutta percha during root canal retreatment. J Endod 2007;33:38–41. DOI: 10.1016/j.joen.2006.08.012.
  3. Bhagavaldas MC, Diwan A, et al. Efficacy of two rotary retreatment systems in removing Gutta-percha and sealer during endodontic retreatment with or without solvent: A comparative in vitro study. J Conserv Dent 2017;20:12–16. DOI: 10.4103/0972-0707.209075.
  4. Al-azzawi AK. The efficiency of ProTaper rotary retreatment files in the removal of two different root filling materials. Mal Dent J 2011;8:237–242.
  5. Mushtaq M, Farooq R, et al. Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals. J Conserv Dent 2012;15(2): 141–145. DOI: 10.4103/0972-0707.94584.
  6. Kasam S, Mariyasamy AB. Efficacy of Different Methods for Removing Root Canal Filling Material in Retreatment - An In-vitro Study. J Clin Diagn Res 2016 Jun;10(6):ZC06–ZC10. DOI: 10.7860/JCDR/2016/17395.7904.
  7. Uezu MK, Britto ML, et al. Comparison of debris extruded apically and working time used by protaper universal rotary and protaper retreatment system during gutta-percha removal. J Appl Oral Sci 2010;18(6):542–545. DOI: 10.1590/S1678-77572010000600002.
  8. Cunha RS, De Martin AS, et al. In vitro evaluation of the cleansing working time and analysis of the amount of gutta-percha or resilon remnants in the root canal walls after instrumentation for endodontic retreatment. J Endod 2007;33:1426–1428. DOI: 10.1016/j.joen.2007.07.004.
  9. Fariniuk LF, Westphalen VP, et al. Efficacy of five rotary systems vs manual instrumentation during endodontic retreatment. Braz Dent J 2011;22:294–298. DOI: 10.1590/S0103-64402011000400006.
  10. Taşdemir T, Er K, et al. Efficacy of three rotary NiTi instruments in removing gutta-percha from root canals. Int Endod J 2008;41:191–196. DOI: 10.1111/j.1365-2591.2007.01335.x.
  11. Bramante CM, Fidelis NS, et al. Heat release, time required, and cleaning ability of MTwo R and ProTaper universal retreatment systems in the removal of filling material. J Endod 2010;36:1870–1873. DOI: 10.1016/j.joen.2010.08.013.
  12. Rached-Junior FA, Sousa-Neto MD, et al. Confocal microscopy assessment of filling material remaining on root canal walls after retreatment. Int Endod J 2014;47:264–270. DOI: 10.1111/iej. 12142.
  13. Tambe VH, Nagmode PS, et al. Evaluation of the amount of debris extruded apically by using conventional syringe, endovac and ultrasonic irrigation technique: an in vitro study. J Int Oral Health 2013;5(3):63–66.
  14. Gergi R, Sabbagh C. Effectiveness of Two Nickel-Titanium Rotary Instruments and A Hand File for Removing Gutta-Percha in Severely Curved Root Canals During Retreatment: An Ex Vivo Study. Int Endod J 2007 July;40(7):532–537. DOI: 10.1111/j.1365-2591.2007.01254.x.
  15. Schirrmeister JF, Meyer KM, et al. Effectiveness of hand and rotary instrumentation for removing a new synthetic polymer-based root canal obturation material (Epiphany) during retreatment. Int Endod J 2006;39:150–156. DOI: 10.1111/j.1365-2591.2006.01066.x.
  16. Mollo A, Botti G, et al. Efficacy of two Ni-Ti systems and hand files for removing gutta-percha from root canals. Int Endod J 2012;45:1–6. DOI: 10.1111/j.1365-2591.2011.01932.x.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.