Title

In vitro comparative evaluation of dentinal microcracks during root canal instrumentation using rotary and reciprocating file systems with FESEM analysis

Authors

GPV Srikumar^1,*, Sakshi P Barde¹, Shivran Kumari¹, Priyanka A Rawale¹, Sonali H Bansode² & Kshama K Sarak³

Affiliation

¹Department of Conservative Dentistry and Endodontics, Triveni Institute of Dental Sciences, Hospital and Research Centre, Bilaspur, Chhattisgarh, India; ²Department of Conservative Dentistry and Endodontics, Pandit Deendayal Upadhyay Dental College, Hospital and Research Centre, Solapur, Maharashtra, India; ³Department of Conservative Dentistry and Endodontics, Al Badar Rural Dental College and Hospital, Gulbarga, Karnataka, India; *Corresponding author

Email

GPV Srikumar - E-mail: drsrikumar2611@gmail.com; Phone: +91 9685514220
Sakshi P Barde - E-mail: sakshibarde2@gmail.com; Phone: +91 9561226860
Shivran Kumari - E-mail: kumari.simran1919@gmail.com
Priyanka A Rawale - E-mail: rawalepriyanka99@gmail.com; Phone: +91 9172371760
Sonali H Bansode - E-mail: sonalibansode303@gmail.com; Phone: +91 9834261754
Kshama K Sarak - E-mail: sarak.kshama@gmail.com; Phone: +91 9922231332

Article Type

Research Article

Date

Received August 1, 2026; Revised August 31, 2026; Accepted August 31, 2026, Published August 31, 2026

Abstract

Root canal instrumentation may induce dentinal microcracks, yet comparative evidence across rotary and reciprocating file systems remains limited. Therefore, it is of interest to evaluate the 80 extracted premolars instrumented with ProTaper Gold, TruNatomy, WaveOne Gold, or Reciproc Blue, with FESEM assessment at 3 mm, 6 mm and 9 mm levels. All systems produced microcracks, but ProTaper Gold showed the highest incidence, followed by TruNatomy, while WaveOne Gold and Reciproc Blue showed fewer defects. Reciproc Blue showed the lowest microcrack occurrence across all root levels. Thus, data shows that reciprocating systems, especially Reciproc Blue, may better preserve dentinal integrity during root canal preparation.

Keywords

Dentinal microcracks, root canal instrumentation, rotary files, reciprocating files

Citation

Srikumar et al. Bioinformation 22(8): 5085-5091 (2026)

Edited by

Vini Mehta

ISSN

0973-2063

Publisher

Biomedical Informatics

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.