Title
Comparative evaluation of dentinal microcracks using different root canal file systems; An in vitro Micro-CT study
Authors
Pareba Saini, Sumita Giri*, Chetna Arora, Nabanita Sarma, Subhashita Sharma, Prashant Chilgar & Sanjeet Kumar
Affiliation
Department of Conservative Dentistry and Endodontics, Santosh Dental College & Hospitals, Santosh Deemed to be University, Ghaziabad, NCR, Delhi, India; *Corresponding author
Pareba Saini - E-mail: parebasaini@gmail.com
Sumita Giri - E-mail: sumitagiri1011@gmail.com
Chetna Arora - E-mail: drchetnaarora1@gmail.com
Nabanita Sarma - E-mail: sarmanabanita007@gmail.com
Subhashita Sharma - E-mail: sharmasubhashita23@gmail.com
Prashant Chilgar - E-mail: prahsantchilgar@gmail.com
Sanjeet Kumar - E-mail: shanusanjeet904@gmail.com
Article Type
Research Article
Date
Received September 1, 2026; Revised September 30, 2026; Accepted September 30, 2026, Published September 30, 2026
Abstract
Dentinal microcracks formed during root canal preparation may increase the risk of vertical root fracture. Therefore, it is of interest to compare the microcrack formation after instrumentation with K-files, ProTaper Gold and Self-Adjusting File using micro-CT. Microcracks occurred in 40.0% of specimens, with the highest incidence for K-files (60.0%), followed by ProTaper Gold (50.0%) and Self-Adjusting File (10.0%). The likelihood ratio test showed significant differences among groups (p = 0.038) and no complete cracks were observed with the Self-Adjusting File. Thus, data supports self-Adjusting File for dentin preservation and advance minimally invasive endodontic instrumentation.
Keywords
Dentinal microcracks, root canal preparation, protaper gold, self-adjusting file, micro-computed tomography, vertical root fracture, minimally invasive endodontics
Citation
Saini et al. Bioinformation 22(9): 5747-5750 (2026)
Edited by
Ruby Singh
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.
