Efficacy of three Nickel Titanium rotary file systems in removal of intracanal filling material (In vitro study)

Tarek Bayoumi, Yomna; Ali Hussein, Shady; Moustafa Abdelaziz, Tarek

doi:10.21608/edj.2023.196438.2461

	Efficacy of three Nickel Titanium rotary file systems in removal of intracanal filling material (In vitro study)
Egyptian Dental Journal
Volume 69, Issue 3 - Serial Number 5, July 2023, Page 2281-2289 PDF (289.62 K)
Document Type: Original Article
DOI: 10.21608/edj.2023.196438.2461
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Authors
Yomna Tarek Bayoumi ¹; Shady Ali Hussein ²; Tarek Moustafa Abdelaziz ³
¹B.D.S Ain Shams University, Faculty of Dentistry Ain Shams University
²Associate professor of Endodontics, Endodontic department, Faculty of Dentistry, Ain Shams University
³Lecturer of Endodontics, Endodontic department, Faculty of Dentistry, Ain Shams University
Abstract
Aim: Our study was conducted to assess the efficacy of three rotary nickel-titanium retreatment systems in terms of remaining obturation material on canal walls, debris extruded out of the canal, time taken to reach full working length and number of fractured files in each system. Methodology: 120 canals (type III) in 60 mesial roots of lower mandibular first molars were randomly divided into 3 groups of 40 canals each according to the retreatment system used. In Group (I) retreatment was done using Protaper universal retreatment file system (PTUR), Group (II) Mpro retreatment file system was used and Group (III) RT gold file system. Results: Protaper universal retreatment system showed to be significantly more effective in removal of root canal filling material, consumed less time during retreatment with less number of fractured instruments. While Mpro retreatment files showed the least amount of apically extruded debris. Conclusion: Under the circumstances of this study, it can be concluded that all techniques failed to clear the canals from remaining obturating material with the highest percentage on the apical area, debris extrusion remains problematic in all systems used, Protaper file is the most speed efficient and has higher efficacy in removal of root canal filling material than the other two groups.
Keywords
Root Canal Retreatment; debris extrusion; remaining obturating material


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