Evaluation of efficiency of three NiTi instruments in removing gutta flow 2 from root canal during retreatment –An in vitro study
Keywords:
Gutta flow2, Rotary instrumentsAbstract
To evaluate the efficiency of three rotary nickel titanium instruments and hand instrumentation in removing gutta flow 2 from root canals 60 extracted human maxillary central and lateral incisors were instrumented with k-files and filled with guttaflow2 .The teeth were randomly divided into four experimental groups of 15 specimens each. Removal of gutta flow 2 was performed with the following devices and techniques: portmapper Universal rotary retreatment system, R-Endo retreatment files, M two retreatment files and Hedstrom files. Time to reach working length and to eliminate filling material was also recorded. The specimens were rendered transparent for evaluation of the area of the remaining gutta flow 2 under stereomicroscope at 6x magnification. Photographs were taken for further analysis using computer image analysis program. The results were statistically analyzed using ANOVA and Bonferroni test.
Downloads
References
Here's the list of references with formatting removed:
Lin LM, Skribner JE, Gaengler P. Factors associated with endodontic treatment failures. J Endod 1992;12:625-7.
Sjogren U, Hagglund B, Sundqvist G, Wing K. Factors affecting the long-term results of endodontic treatment. J Endod 1990;16:498-504.
Saad AY, Al-Hadlaq SM, Al-Katheeri NH. Efficacy of two rotary NiTi instruments in the removal of gutta-percha during root canal retreatment. J Endod 2007;33:38-41.
Lovdahl PE. Endodontic retreatment. Dent Clin North Am 1992;36:473-88.
Friedman S, Stabholz A. Endodontic retreatment: case selection and technique. Part 1. Criteria for case selection. J Endod 1986;12:28-33.
Pirani. Effectiveness of three different retreatment techniques in canals filled with compacted gutta-percha or Thermafil: A Scanning Electron Microscope study. J Endod 2009;35:1433-1440.
Gorni F, Gagliani MM. The outcome of endodontic retreatment: a 2-yr follow-up. J Endod 2004;30:1-4.
Imura N, Pinheiro ET, Gomes B, et al. The outcome of endodontic treatment: A retrospective study of 2000 cases performed by specialists. J Endod 2007;33:1278-82.
Ruddle C. Non-surgical retreatment. J Endod 2004;30:827-45.
Farzaneh M, Abitbol S, Friedman S. Treatment outcome in endodontics: The Toronto study – Phases I and II. J Endod 2004;30:627-33.
De Chevigny, Dao TT, Basrani BR, et al. Treatment outcome in endodontics: The Toronto study – Phases 3 and 4: Orthograde retreatment. J Endod 2008;131-7.
Stabholz A, Friedman S. Endodontic retreatment: Case selection and technique. Part 2: Treatment planning for retreatment. J Endod 1988;12:607-614.
Baratto-Filho F, Ferreira E, Fariniuk L. Efficacy of the 0.04 taper ProFile during retreatment of gutta-percha filled root canals. Int Endod J 2002;35:651-4.
Ruddle CJ. Non-surgical retreatment. In: Cohen S, Burns RC. Pathways of the Pulp. St Louis, MO: CV Mosby; 2002:875-930.
Viduei D, Juks. Removal of gutta-percha from root canals using an Nd:YAG laser. Int Endod J 2003;36:670-3.
Tasdemir T, Er K, Yildirim T, Celik D. Efficacy of three rotary NiTi instruments in gutta-percha removal from root canals. Int Endod J 2008;41:191-6.
Schirrmeister. Effectiveness of hand and rotary instrumentation for removing a new synthetic polymer-based root canal obturation material during retreatment. Int Endod J 2006;39:150-6.
Nair. Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: A long-term light and electron microscopic follow-up study. J Endod;16:580-8.
Schirrmeister JF, Wrbas KT, Scheider. Effectiveness of a hand file and three nickel-titanium instruments for removing gutta-percha in curved root retreatment. Oral Surg Oral Med Oral Pathol Oral Radial Endod 2006;101:542-7.
Meyer. Detectability of residual Epiphany and gutta-percha after root canal retreatment. Int Endod J 2006;39:558-65.
Zaccaro. Efficacy of automated versus hand instrumentation. Int Endod J 2006;39:779-84.
Stotz. Efficacy, cleaning ability, and safety of different devices for gutta-percha removal. Int Endod J 1997;30:227-33.
Downloads
Published
Issue
Section
License
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
