Comparative evaluation of the effect of hand file, different nickel-titanium retreatment files, and self-adjusting file system on the incidence of dentinal microcrack formation during the removal of root canal filling material - An In vitro stereomicroscopic study
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-03-11 |
| Journal | Medical Journal of Dr D Y Patil Vidyapeeth |
| Authors | Karan Bhargava, Pooja Newase, Mayuri Paunikar, Abhilasha Bhawalkar, Tanaya Kumar |
| Institutions | Dr D Y Patil Dental College & Hospital, Dr. D.Y. Patil Vidyapeeth, Pune |
Abstract
Section titled āAbstractāAim: The aim of the study is to evaluate the effect of hand files, rotary nickel-titanium files, and self-adjusting file (SAF) on the incidence of crack formation during retreatment. Materials and Methods: Eighty extracted human mandibular molar teeth with intact mesial roots were selected. They were divided into 8 groups of 10 teeth each; Group 1: Control, Group 2: Obturated control, Group 3: Hand files, Group 4: ProTaper Universal Retreatment, Group 5: Twisted File Adaptive, Group 6: Reciproc Blue, Group 7: XP-endo Finisher R, Group 8: SAF system. All teeth had the coronal portions and distal roots removed by a diamond-coated disc with water cooling, leaving roots approximately 13 mm in length. Except for Group 1, all canals were similarly instrumented and obturated at an apical size of 40.02. Retreatment was performed in each group according to manufacturerās recommendations except for Groups 1 and 2. The roots were sectioned horizontally at 3, 6, and 9 mm from the apex with a low-speed saw. Stereomicroscopic evaluation of the sections was done to assess the presence or absence of defects. Results: The groups that were not retreated (Groups 1 and 2) showed no defects. Hand files showed the least number of defects followed by the SAF. Reciproc Blue showed the most dentinal defects. Conclusion: All NiTi instruments tend to induce various degrees of dentinal damage during retreatment procedures. The SAF and hand instrumentation presented satisfactory results with minimal dentinal microcracks.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2014 - Incidence of apical crack initiation and propagation during the removal of root canal filling material with ProTaper and Mtwo rotary nickel-titanium retreatment instruments and hand files [Crossref]
- 2013 - The effect of endodontic procedures on apical crack initiation and propagation ex vivo [Crossref]
- 2017 - Evaluation of dentin defect formation during retreatment with hand and rotary instruments: A micro-CT study?
- 2015 - Comparison of dentinal damage induced by different nickel-titanium rotary instruments during canal preparation: An in vitro study [Crossref]
- 2013 - Incidence of apical root cracks and apical dentinal detachments after canal preparation with hand and rotary files at different instrumentation lengths [Crossref]
- 2013 - Dentinal defects before and after rotary root canal instrumentation with three different obturation techniques and two obturating materials
- 2016 - Shaping ability of two nickel-titanium instruments activated by continuous rotation or adaptive motion: A micro-computed tomography study [Crossref]
- 1985 - The ābalanced forceā concept for instrumentation of curved canals [Crossref]
- 2014 - The effects of Mtwo, R-Endo, and D-RaCe retreatment instruments on the incidence of dentinal defects during the removal of root canal filling material [Crossref]
- 2007 - A quantitative evaluation of sealing ability of 4 obturation techniques by using a glucose leakage test [Crossref]