Removal of Gutta-Percha from the Root Canals using Three Different Rotary Files

In case of failed root canal treatment endodontic retreatment of the root canal system is necessary. The aim of the present study was to compare the gutta-percha removal with Protaper retreatment files (Dentsply Maillefer, Ballaigues, Switzerland), K3 (SybronEndo) and Hero Shapers (MicroMega, Besancon, France). Method: Thirty freshly extracted human single rooted teeth were prepared with ProTaper rotary instruments up to file F3 andfilled with 30 # GP cones and AH plus sealer. The teeth were then stored for 1 week. The teeth were divide into 3 retreatment groups (n=10). The gutta-percha was removed using Protaper retreatment files, K3 and Hero Shapers. Teeth were then evaluated using radiographs. Results: Comparing the ratio between clean canals Protaper and K3 showed better debris removal as compared to Hero shaper. But no significance difference was found.

[1]  K. M. Meyer,et al.  Detectability of residual Epiphany and gutta-percha after root canal retreatment using a dental operating microscope and radiographs--an ex vivo study. , 2006, International endodontic journal.

[2]  C. Bramante,et al.  Quantec SC rotary instruments versus hand files for gutta-percha removal in root canal retreatment. , 2001, International endodontic journal.

[3]  M. Hülsmann,et al.  Efficacy, cleaning ability and safety of different devices for gutta-percha removal in root canal retreatment. , 1997, International endodontic journal.

[4]  M. L. Hicks,et al.  Effectiveness of halothane used with ultrasonic or hand instrumentation to remove gutta-percha from the root canal. , 1991, Journal of endodontics.

[5]  I. Chin,et al.  Gutta percha removal utilizing GPX instrumentation. , 1992, Journal.

[6]  S. Grandini,et al.  Efficacy of two Ni-Ti systems and hand files for removing gutta-percha from root canals. , 2012, International endodontic journal.

[7]  S. Friedman,et al.  Endodontic retreatment—Case selection and technique. Part 3. Retreatment techniques , 1990 .

[8]  J. Gutmann,et al.  Removal of Gutta-Percha/Zinc-Oxide-Eugenol Sealer or Gutta-Percha/Epoxy Resin Sealer from Severely Curved Canals: An In Vitro Study , 2011, International journal of dentistry.

[9]  L. Silveira,et al.  USE OF ORGANIC SOLVENTS IN ENDODONTICS: A REVIEW , 2006 .

[10]  J. Rhodes,et al.  The efficacy of gutta-percha removal using ProFiles. , 2001, International endodontic journal.

[11]  A. Chandra,et al.  Detection of residual obturation material after root canal retreatment with three different techniques using a dental operating microscope and a stereomicroscope: An in vitro comparative evaluation , 2012, Journal of conservative dentistry : JCD.