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VOLUME 9 , ISSUE 1 ( June, 2017 ) > List of Articles


A Comparative Analysis of Efficacy of Retreating the Root Canal using Rotary Files, in Rotational Motion or Reciprocative Adaptive Motion and Reciprocating Single File System: An In Vitro Study

NM Dhanyakumar, Mannur N Ajit

Keywords : Adaptive motion, Reciprocating motion, Retreatment, Rotary motion, Stereomicroscope

Citation Information : Dhanyakumar N, Ajit MN. A Comparative Analysis of Efficacy of Retreating the Root Canal using Rotary Files, in Rotational Motion or Reciprocative Adaptive Motion and Reciprocating Single File System: An In Vitro Study. CODS J Dent 2017; 9 (1):1-6.

DOI: 10.5005/jp-journals-10063-0024

License: CC BY-NC-ND 3.0

Published Online: 01-12-2018

Copyright Statement:  Copyright © 2017; The Author(s).


Aim: This experiment was planned, to understand and analyze the efficacy of retreatment with the PTUR files with rotational motion and adaptive motion technology and a single reciprocating file system (Reciproc R50); in an in vitro setup. Materials and methods: Fifty-four extracted lower 1st molars were equally distributed in three groups of 18 specimens, respectively. Access cavity was prepared, and working length was measured in the mesiobuccal canal with a No.10 K-file. Canal preparation was done using ProTaper Universal files SX-F2. Irrigation was done using 2.5% NaOCl and 17% Ethylenediaminetetraacetic (EDTA) solution. Obturation was done using ProTaper F2 GP cones with AH Plus sealer by using System-B warm vertical compaction method. Group I–Retreatment with PTUR files D1-D3 in rotary motion; Group II–Retreatment with PTUR files D1-D3 in adaptive motion; Group III–Retreatment with reciproc R50 file in the reciprocating motion. The time taken for retreatment of the canal in each sample in each group was noted. The teeth were sectioned longitudinally and were observed under the stereo microscope at 8X magnification. The remaining amount of filling material was calculated on the images as a percentage. Statistics were analyzed using one way analysis of variance (ANNOVA) and Tukey post-hoc test. Results: In the coronal third, the Reciproc R50 file was the most efficient in removing the filling from the canal followed by the ProTaper retreatment files in adaptive motion and then the ProTaper retreatment files in rotary motion with a significant difference according to statistics, between all three groups. In middle one-third and apical one-third, ProTaper retreatment files in adaptive motion were the most effective in removing root canal filling followed by the reciproc R50 file and then the ProTaper retreatment files in rotary motion with a significant difference between all the three groups. The reciproc R50 files in reciprocating motion took significantly less preparation time compared to the other two groups. Conclusion: The ProTaper retreatment files with adaptive motion showed the least amount of remaining filling material in the middle and apical one-third of the root canal. The reciproc R50 file with reciprocating motion showed the least amount of residual filling material in the coronal one-third of the root canal. The ProTaper retreatment files with adaptive motion prepared the root canal most rapidly among the three groups.

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  1. Cohen S, Hargreaves K. Pathways of the Pulp 9th ed. Mosby, St. Louis, Mo,2006.
  2. Ingle JI, Beveridge EE, Glick DH, Weichman JA. Endodontic success & failure: The Washington Study in J.I Ingle, L.K Bakland (Eds) Endodontics, 4th ed. Williams & Wilkins, Baltimore:1994:21-45.
  3. American Association of Endodontists. Glossary of Endodontic Terms. 8th ed. AAE, Chicago; 2012.
  4. Saad AY, Al-Hadlaq SM, Al-Katheeri NH. Efficacy of two rotary NiTi the removal of Gutta-percha during root canal treatment. J Endod 2007;33(1):38-41.
  5. Gu L-S, Ling J-Q, Huang X-Y. Efficacy of ProTaper Universal rotary retreatment system for gutta-percha removal from root canals. Int Endod J 2008;41:288-295
  6. Gambarini G, Testarelli L, De Luca M, Milana V, Plotino G, Grande NM, et al. The influence of three different instrumentation techniques on the incidence of postoperative pain after endodontic treatment. Ann Stomatol (Rome) 2013;4: 152-155.
  7. Gambarini G, Grande NM, Plotino G, Somma F, Garala M, De Luca M, et al. Fatigue resistance of engine driven rotary nickel-titanium instruments produced by newer manufacturing methods. J Endod 2008;34:1003-1005.
  8. Bhagabati N, Yadav S, Talwar S. An invitro cyclic fatigue analysis of different endodontic nickel-titanium rotary instruments. J Endod 2012;38(4):515-518.
  9. Gambarini G, Rubini AG, Al Sudani D, Gergi R, Culla A, De Angelis F, et al. Influence of Different Angles of Reciprocation on the Cyclic Fatigue of Nickel-Titanium Endodontic Instruments. J Endod 2012;38(10):1408-1411.
  10. Capar ID, Arslan H, Ertas H, Gok T, Saygili G. Effectiveness of ProTaper Universal retreatment instruments used with rotary or reciprocating adaptive motion in the removal of root canal filling material. Int Endod J 2015;48:79-83.
  11. Gambarini G, Glassman G. TF Adaptive: A novel approach to Nickel-Titanium Instrumentation. “ Rotary when you want it, Reciprocation when you need it.” Oral Health Dent J, May 2013;22:30.
  12. Yared G. Canal preparation using only one Ni-Ti rotary instrument: preliminary observations. Int Endod J 2008;41: 339-344.
  13. Shen Y, Zhou HM, Zheng YF, Peng B, Haapasalo M. Current challenges and concepts of the thermomechanical treatment of nickel-titanium instruments. J Endod 2013;39: 163-172.
  14. Capar ID, Ertas H, Ok E, Arslan H, Ertas ET. Comparative study of different novel nickel-titanium rotary instruments for root canal preparation in severely curved root canals. J Endod 2014;40(6):852-856.
  15. Somma F, Cammarota G, Plotino G, Grande NM, Pameijer CH. The effectiveness of manual and mechanical instrumentation for the retreatment of three different root canal materials. J Endod 2008;34:466-469.
  16. Southard DW. Immediate core build up of endodontically treated teeth:the rest of the seal. Pract Periodont Aesthet Dent 1999;11(4):519-526.
  17. Zuolo AS, Mello JEJo, Cunha RS, Zuolo ML, Bueno CES. Efficacy of reciprocating and rotary techniques for removing filling material during root canal retreatment. Int Endod J 2013;46:947-953.
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