Title

Comparative analysis of apical root resorption induced by different intrusion mechanics: A scanning electron microscopy study

Authors

Siddharth Sonwane^1,*, Monica Chaurasia², Purvi Awasthi¹, Aashu Sharma¹, Subodh Sunil Chaudhari¹ & Amey Rajesh Bhandurge¹

Affiliation

¹Department of Orthodontics and Dentofacial Orthopaedics, Mansarovar Dental College, Bhopal, Madhya Pradesh, India; ²Department of Dentistry, Government Medical College, Satna, Madhya Pradesh, India; *Corresponding author

Email

Siddharth Sonwane - E-mail: siddharth5678@gmail.com
Monica Chaurasia - E-mail: mchaurasia943@gmail.com
Purvi Awasthi - E-mail: purvi.kothari.8@gmail.com
Aashu Sharma - E-mail: sashu231@gmail.com
Subodh Sunil Chaudhari - E-mail: subodh20chaudhari@gmail.com
Amey Rajesh Bhandurge - E-mail: ameybhandurge@gmail.com

Article Type

Research Article

Date

Received October 1, 2025; Revised October 31, 2025; Accepted October 31, 2025, Published October 31, 2025

Abstract

Root resorption is a frequent iatrogenic consequence of orthodontic tooth movement and this study aims to compare the extent of root resorption induced by different intrusion mechanics, including mini-screws, bite turbos and box loops, using scanning electron microscopy (SEM). The sample included 18 maxillary first premolars extracted from nine orthodontic patients undergoing first premolar extractions. Subjects were randomly assigned to three groups (n = 6 teeth per group). Following extraction, one-third of the root was embedded in acrylic, while epoxy resin replicas of the apical two-thirds were prepared using silicone impressions. The samples were electroplated with silver and examined under SEM (JEOL Ltd., Tokyo, Japan) at 20 kV, with magnifications ranging from ×35 to ×1000. Within the study limitations, mini-screws and turbos produced more pronounced root resorption than box loop mechanics.

Keywords

Root resorption, orthodontic intrusion, scanning electron microscopy (SEM), mini-screws, premolars

Citation

Sonwane et al. Bioinformation 21(10): 3889-3892 (2025)

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.