Title

FEM study of root stress patterns during extrusion versus intrusion movements using aligners

Authors

Divya Soni^1,*, Gaurav Dhir², Mohd Haroon Ahmed³, Amrit Podder⁴, Stuti Soni⁵ & Kratika Lalwani⁶

Affiliation

¹Department of Dentistry, Shri Dadaji Dhuniwale Government District Hospital, Khandwa, Madhya Pradesh, India; ²Department of Orthodontics & Dentofacial Orthopedics, Maharana Pratap College of Dentistry & Research Centre, Gwalior, Madhya Pradesh, India; ³Department of Physiology, Teerthanker Mahaveer Medical College & Research Centre, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh, India; ⁴Department of Dentistry, District Hospital and Trauma Centre, Waidhan, Singrauli, Madhya Pradesh, India; ⁵Department of Dentistry, Government District Hospital, Ujjain, Madhya Pradesh, India; *Corresponding author

Email

Divya Soni - E-mail: divyasoni0806@gmail.com
Gaurav Dhir - E-mail: doctordhir@gmail.com
Mohd Haroon Ahmed - E-mail: ahmedharoon4567@gmail.com
Amrit Podder - E-mail: amritpodder0@gmail.com
Stuti Soni - E-mail: dr.stuti.soni1995@gmail.com
Kratika Lalwani - E-mail: kratika.lalwani@gmail.com

Article Type

Research Article

Date

Received November 15, 2025; Revised December 15, 2025; Accepted December 15, 2025, Published December 15, 2025

Abstract

The use of finite element modeling (FEM) to analyze root stress patterns during extrusion and intrusion movements using clear aligners is gaining momentum. The results showed that extrusion movements generated higher root stress compared to intrusion, with variations observed across different tooth types. The study provided insights into the potential risks of root resorption during aligner therapy, emphasizing the importance of controlled movement. This can help clinicians optimize treatment plans to minimize adverse effects on tooth roots. However, more data is needed to explore the long-term implications of aligner treatments on root health.

Keywords

Aligners, FEM, intrusion, root stress, tooth movement

Citation

Soni et al. Bioinformation 21(12): 4697-4700 (2025)

Edited by

Ritik Kashwani

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.