Title
Evaluation of fracture resistance among endodontically treated teeth using constant, variable and guiding taper endodontic file systems
Authors
Sonam Bohra, Gurudutt Nayak*, Maulsree Guleria, Drisya D. Nambiar, Ejaz Ahmed, Manahil Qureshi & Simran Patil
Affiliation
Department of Conservative Dentistry and Endodontics, Mansarovar Dental College, Bhopal, Madhya Pradesh, India; *Corresponding author
Sonam Bohra - E-mail: bohrasonam9@gmail.com
Gurudutt Nayak - E-mail: gurudutt_nayak@hotmail.com
Maulsree Guleria - E-mail: guleriamaulsree@gmail.com
Drisya D. Nambiar - E-mail: dr.drisya90@gmail.com
Ejaz Ahmed - E-mail: ejaz34834@gmail.com
Manahil Qureshi - E-mail: qureshi8435@gmail.com
Simran Patil - E-mail: shivanicods2015@gmail.com
Article Type
Research Article
Date
Received October 1, 2025; Revised October 31, 2025; Accepted October 31, 2025, Published October 31, 2025
Abstract
Canal preparation is a critical step in endodontics because it involves removing a significant amount of dentin, which can weaken the root structure and lead to vertical root fractures. Therefore, it is of interest to evaluate the effect of rotary files with constant, variable and guiding tapers on the fracture resistance of endodontically treated teeth, as well as to assess the mode of fracture. Eighty freshly extracted human mandibular premolars were decoronated, simulated for periodontal ligament, embedded in acrylic resin blocks and subsequently instrumented using JIZAI, ProTaper Ultimate and XP-endo Rise systems. After obturation, fracture resistance was tested with a universal testing machine. The results showed that among the experimental groups, XP-endo Rise had the highest fracture resistance, which was statistically significant (p<0.05) compared to ProTaper Ultimate and JIZAI, indicating better preservation of dentin.
Keywords
Fracture resistance, vertical root fracture, ProTaper Ultimate, XP-endo rise, JIZAI, rotary file
Citation
Bohra et al. Bioinformation 21(10): 3420-3425 (2025)
Edited by
Vini Mehta
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
