Title
Pericervical dentin preservation and fracture resistance across three instrumentation systems: A CBCT study
Authors
Sarang B. Satheesh*, Rekha P. Thankachan, Anoop Samuel, K. Ranjith, H. Azeem & P.V Bhagyalakshmi
Affiliation
Department of Conservative Dentistry and Endodontics, MES Dental College, Perinthalmanna, Kerala, India; *Corresponding author
Sarang B. Satheesh - E-mail: sarangbsatheesh116@gmail.com
Rekha P. Thankachan - E-mail: rekhasamuel7@gmail.com
Anoop Samuel - E-mail: anoopzsam@gmail.com
K. Ranjith - E-mail: ranjukarat86@gmail.com
H. Azeem - E-mail: drazeemhassan@gmail.com
P.V. Bhagyalakshmi - E-mail: bhagyalakshmi.pvs@gmail.com
Article Type
Research Article
Date
Received August 1, 2026; Revised August 31, 2026; Accepted August 31, 2026, Published August 31, 2026
Abstract
Excessive pericervical dentin removal during root canal instrumentation may weaken endodontically treated teeth and reduce fracture resistance. Therefore, it is of interest to compare the Hand K-Files, ProTaper Gold, WaveOne Gold and One Curve in 40 mandibular premolars. CBCT quantified pre- and post-instrumentation canal wall thickness and a universal testing machine measured fracture resistance. Overall wall-thickness reduction was 16.40%, 18.32%, 18.90% and 18.04%, respectively; Hand Files had the highest fracture resistance, while One Curve ranked highest among rotary systems. Thus, One Curve showed the most favorable balance of dentin preservation and fracture resistance among the rotary systems.
Keywords
Pericervical dentin (PCD), fracture resistance, nickel–titanium rotary instruments, cone beam computed tomography (CBCT), root canal preparation
Citation
Satheesh et al. Bioinformation 22(8): 5331-5335 (2026)
Edited by
Hiroj Bagde
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.
