Title

Cone -beam computed tomographic (CBCT) analysis of root canal volume changes with OneShape, standard Mani -silk and BlueFlex acer file: An in vivo study

Authors

Mandeep Kaur*, Renu Bala Sroa & Baljeet Kumar

Affiliation

Department of Conservative Dentistry & Endodontics, Government Dental College & Hospital, Amritsar, Punjab, India; *Corresponding author

Email

Mandeep Kaur - E-mail: mandeepmani2015@gmail.com
Renu Bala Sroa - E-mail: renusroa@gmail.com
Baljeet Kumar - E-mail: drbaljeet@gmail.com

Article Type

Research Article

Date

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

Abstract

Over-instrumentation can result in excessive and inappropriate dentin removal, especially in root canals with complex internal anatomy. Therefore, it is of interest to evaluate changes in root canal volume of permanent mandibular premolars after preparation with OneShape, Standard Mani-Silk and Blueflex Acer file using CBCT and 3D reconstruction. Hence, 45 teeth were divided into three groups, instrumented with the respective file systems and pre- and post-instrumentation canal volumes were measured using Blue Sky Plan and MeshMixer software. The results showed that all file systems significantly increased canal volume (p<0.001), with Blueflex Acer file producing the highest volume change, followed by OneShape and Standard Mani-Silk the least. Standard Mani-Silk showed the best preservation of canal anatomy, suggesting its suitability for conservative endodontic preparation.

Keywords

Root canal preparation, canal volume change, OneShape file, standard Mani-silk file, BlueFlex acer file, cone-beam computed tomography (CBCT), 3D reconstruction, nickel-titanium files

Citation

Kaur et al. Bioinformation 22(5): 2895-2899 (2026)

Edited by

Rashmi Laddha

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.